Article
Chemistry, Multidisciplinary
Lamia Al-Farsi, Tewfik M. Souier, Muna Al-Hinai, Myo T. Z. Myint, Htet H. Kyaw, Hisham M. Widatallah, Mohammed Al-Abri
Summary: The low-temperature microwave-assisted hydrothermal method was used to successfully grow pure and Al-doped ZnO nanorod arrays on glass substrates. The effects of doping and pH on the structural and optical properties of the samples were investigated, and a growth mechanism considering both the pH and Al-doping was proposed. Tuning the solution pH is crucial for growing well-aligned, high-quality nanorod arrays with enhanced optical absorption in the visible range. The production of these arrays would broaden the potential applications of ZnO and AZO nanorods.
Article
Chemistry, Multidisciplinary
Ali Can Guler, Jan Antos, Milan Masar, Michal Urbanek, Michal Machovsky, Ivo Kuritka
Summary: This study investigated the effects of geometric features, light absorption spectra, and electrochemical active surface area on photoelectrochemical properties. ZnO nanorods were grown on ITO substrates with controlled morphologies and used as a model. The size of the nanorods was adjusted by varying the concentration of a cation surfactant. The results showed that the geometric characteristics and electrochemically active surface area increased together, while the light scattering effect slightly increased due to the random spatial orientation of the nanorods. The large surface area and void space between nanorods improved the photon-to-current conversion efficiency. A maximum photocurrent density was achieved with smaller diameter and length ZnO nanorods, and the charge separation efficiency was improved with a shorter photogenerated hole diffusion distance.
NANOSCALE ADVANCES
(2023)
Article
Chemistry, Physical
Aijie Fan, Zhe Zhuang, Xiong Zhang, Cheng Li, Haitao Jiang, Shuai Chen, Xuguang Luo, Guohua Hu, Yiping Cui
Summary: Quasi-ordered semi-polar (1122) plane AlGaN multiple-quantum-well (MQW) nanorod arrays were successfully fabricated using self-assembly technique, with larger diameter and height. The photoluminescence (PL) peak wavelengths at room temperature showed negligible quantum-confined Stark effect in this structure. The PL integral intensity of the nanorod arrays was enhanced by 1.5 times, with increased degree of polarization, indicating enhanced polarized emission.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Inorganic & Nuclear
Nanasaheb M. Shinde, Siddheshwar D. Raut, Balaji G. Ghule, Krishna Chaitanya Gunturu, James J. Pak, Rajaram S. Mane
Summary: A promising electrode for hydrogen evolution reaction (HER) has been prepared by growing NiF2 nanorod arrays on a 3D nickel foam through a reduction process. The NiF2@Ni nanorod arrays demonstrate potential for stable HER application. NiF2 effectively reduces the overpotential of the hydrogen evolution reaction through a cooperative effect between the p-orbitals of fluorine and the d-orbitals of nickel.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Multidisciplinary
Shahab Razavi, Yiping Zhao
Summary: This study demonstrates that a hybridized plasmonic mode in a compound nanohole structure can be described as a quasi-dipole oscillator. By introducing two nanorods into a nanohole, these two quasi-dipoles can couple and hybridize, resulting in additional transmission peaks. The intensities and separations of these peaks can be controlled by adjusting the incident polarization and modifying the nanorod length. This concept can be extended to predict the behavior of more complex compound configurations, allowing for precise engineering of transmission peaks.
Article
Chemistry, Physical
Dan Kuang, Yan Li, Yanfei Gao, Jian Guo, Xuyang Li, Shuang Xu, Bin Liu, Xianwen Liu, Yue Zhang, Zhinong Yu
Summary: This study focused on preparing ZnO nanorod arrays on flexible substrates using a hydrothermal method with the addition of PEI to enhance the performance of the ultraviolet photodetectors. Characterization of the morphology, crystallinity, optical properties, and chemical composition showed that the introduction of PEI adjusted the growth process of ZnO nanorod arrays and improved their optoelectronic performance. The PEI-assisted ZnO nanorod arrays photodetectors exhibited higher photo to dark current ratio, responsivity, and quicker time response speed compared to pure ZnO, along with outstanding mechanical flexibility and robustness under bending tests.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Shengmin Zhang, Zhichao Feng, Ying Hu, Dawang Zhao, Xu Guo, Fengzhi Du, Ningning Wang, Chunhui Sun, Chao Liu, Hong Liu
Summary: PEEK is widely used in orthopedic surgeries for its excellent properties, but its clinical application is limited due to biological inertness. A facile modification method is developed to promote osteogenic activity by forming nanorod arrays on the PEEK surface. The study shows that surface-modified PEEK implants exhibit excellent osseointegration properties.
Article
Materials Science, Ceramics
Catia Liane Ucker, Francielen San Martins Rodrigues, Fabio Calcagno Riemke, Fernando Dal Pont Morisso, Marcio Daldin Teodoro, Valmor R. Mastelaro, Mateus Meneghetti Ferrer, Cristiane Wienke Raubach, Sergio da Silva Cava
Summary: This study demonstrates the synthesis of an orthorhombic Nb2O5 (T) heterostructure coated with low-crystallinity Nb2O5 using the polymeric precursor method. The heterostructure sample exhibited a significant enhancement in photocatalytic performance compared to orthorhombic Nb2O5, achieving complete degradation of RhB within 60 min.
CERAMICS INTERNATIONAL
(2023)
Article
Energy & Fuels
Samah M. Bekhit, Saad G. Mohamed, Ibrahim M. Ghayad, Moataz G. Fayed, W. Metwally, R. Abdel-Karim, S. M. El-Raghy
Summary: This study successfully synthesized nickel selenide nanorod arrays grown on nickel foam via a one-step hydrothermal method. The effects of reaction time on morphology and electrochemical performance were investigated. The results show that the optimum reaction time is 18 hours, and the nanorod arrays exhibit unique electrochemical performance as active electrode materials for both lithium-ion batteries and supercapacitors.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
Dan Kuang, Jin Cheng, Xuyang Li, Yan Li, Meng Li, Fangjunpeng Xu, Jianshe Xue, Zhinong Yu
Summary: ZnO/ZnMgO core/shell nanorod arrays, fabricated using hydrothermal and radio frequency magnetron sputtering methods, exhibit significant ohmic contact and high photo-to-dark current ratio, with fast rise and decay times under 254 nm and 365 nm illumination. The core/shell nanostructure facilitates the rapid separation of photogenerated electron-hole pairs and suppresses recombination of carriers, making it a promising candidate for future ultraviolet detection applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Jiabao Wang, Zhenkai Ji, Xiuzhen Xu, Tiantian Chen, Bo Chen, Guohua Gao, Jiwei Ma, Xipeng Nie, Xiaobin Xu
Summary: This work presents a hybrid lithographic method for growing TiO2 nanorod arrays with arbitrary patterns. The method combines top-down soft lithography and bottom-up hydrothermal approach. The morphology and density of the nanorods can be controlled by adjusting the precursor concentration, reaction time, temperature, and patterns. The work provides a new strategy for the low-cost and facile preparation of patterned TiO2 nanorod arrays and has potential applications in micro-nano-optoelectronic devices and other fields.
Article
Nanoscience & Nanotechnology
Baohua Zhang, Huanxing Wu, Cheng Feng, Zheng Zhang, Haibo Yu, Congting Zhang, Shuang Lin, Chang Xu, Haineng Bai, Fuqiang Guo
Summary: Low power consumption, high sensitivity, and miniaturization are important features for future photonic systems. A self-powered and solar-blind photodetector based on alpha-Ga2O3 nanorod arrays was successfully fabricated in this study. The photodetector exhibited superior photoresponsivity, high I-photo/I-dark ratio, and fast photoresponse rise and decay times, outperforming reported photodetectors. The outstanding crystal quality of the alpha-Ga2O3 nanorod arrays and effective separation of photogenerated electron-hole pairs are responsible for the excellent performance of the photodetector.
ACS APPLIED NANO MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Jamal Ahmad Khan, Yogita Maithani, J. P. Singh
Summary: In this study, Ag2Se nanorod arrays were fabricated using the GLAD technique and two-zone furnace, and Ag2Se planar films of different thickness were also prepared. The tilted Ag(2)Se nanorod arrays exhibited excellent thermoelectric performance with zT of 1.14 and a power factor of 3229.21 μW/m-K-2 at 300 K. The superior thermoelectric properties of the nanorod arrays could be attributed to the unique nanocolumnar architecture that facilitated efficient electron transport and phonon scattering at the interfaces. Furthermore, the nanoindentation measurements showed that the nanorod arrays had lower hardness values and elastic modulus compared to the Ag(2)Se films, indicating improved mechanical properties. The synergistic dependence between the tilt structure and thermoelectric properties, along with the simultaneous improvement in mechanical properties, provides a new avenue for the practical applications of Ag2Se in next-generation flexible thermoelectric devices.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Siyuan Wang, Hao Fu, Jiamin Ma, Xiaomeng Shi, Huimin Wang, Zongyou Yin, Shuai Zhang, Mengdie Jin, Ziyun Zhong, Xinyun Zhai, Yaping Du
Summary: A facile and controllable colloidal synthesis strategy has been established to grow uniformly sized CoF2 nanorods and LiF-tipped CoF2-nanorod heterostructures. These heterostructures show higher specific capacities than the corresponding single components in supercapacitors and lithium sulfur batteries, making them a potential electrode material for energy storage applications.
Article
Engineering, Chemical
Zhiru Xu, Ligang Xu, Yali Wang, Qunyan Li, Suping Cui, Zuoren Nie, Qi Wei
Summary: This study proposed a novel strategy to enhance the MTBE/water separation performance of porous alpha-Al2O3 membranes. The membranes were modified with ZnO nanorod arrays (ZNA) through a deposition and decomposition method followed by hydrothermal reaction, and then hydrophobized with fluoroalkylsilane (FAS). The modified membranes showed a significantly increased MTBE/water separation factor and concentrated MTBE in the permeate mixture to a high concentration.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Yaoxin Zhang, Zhen Yu, Hao Qu, Shuai Guo, Jiachen Yang, Songlin Zhang, Lin Yang, Shaoan Cheng, John Wang, Swee Ching Tan
Summary: The emerging moisture-driven energy generation (MEG) technology has potential in fields like information security, but this potential is currently untapped. This study reports an original MEG structure that uses selective coating of ionic hygroscopic hydrogels on a carbon black surface to convert moisture energy. By combining hydrogel patterns and encoding methods, a humidity-regulated information encryption and display platform is developed, providing a hierarchical solution for high-security encryption and display.
ADVANCED MATERIALS
(2023)
Article
Engineering, Environmental
Jiangmin Jiang, Zhenghui Pan, Jiaren Yuan, Jun Shan, Chenglong Chen, Shaopeng Li, Yaxin Chen, Quanchao Zhuang, Zhicheng Ju, Hui Dou, Xiaogang Zhang, John Wang, John Wang
Summary: By constructing a stable and robust g-C3N4 protective layer on the surface of zinc metal anodes, the performance of aqueous zinc-ion batteries can be improved, inhibiting dendrite growth and enhancing Coulombic efficiency and lifespan.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Soren S. Sorensen, Xiangting Ren, Tao Du, Ayoub Traverson, Shibo Xi, Lars R. Jensen, Mathieu Bauchy, Satoshi Horike, John Wang, Morten M. Smedskjaer
Summary: This work demonstrates that water can depolymerize polyhedra with labile metal-ligand bonds in a cobalt-based coordination network, resulting in nonstoichiometric glasses. The addition of water molecules promotes the breakage of network bonds and coordination number changes, thereby lowering melting and glass transition temperatures. These structural changes alter the physical and chemical properties of the glass, similar to the concept of modifiers in oxides. This approach can be extended to other transition metal-based coordination networks, enabling diversification of hybrid glass chemistry.
Article
Materials Science, Multidisciplinary
Lei Jiang, Mengrui Lu, Piaoyun Yang, Yijing Fan, Hao Huang, Juan Xiong, Zhao Wang, Haoshuang Gu, John Wang
Summary: In this study, a pressure sensor matrix capable of two-dimensional pressure mapping was developed by using patterned piezoelectric (K,Na)NbO3 (KNN) nanorod arrays. The KNN nanorods exhibited excellent mechanical flexibility, elasticity, and piezoelectric performance, enabling a high sensitivity of up to 0.20 V N-1 and a detection limit as low as 20 g. The spatially separated micro sensor matrix allowed for accurate self-powered pressure mapping and precise analysis of mechanical stimulations.
SCIENCE CHINA-MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Tao Sun, Wenjie Zang, Jianguo Sun, Chenguang Li, Jun Fan, Enzhou Liu, John Wang
Summary: Non-carbon-supported single-atom electrocatalysts (SACs) have attracted great interest for water splitting due to their unique bond and coordination properties, as well as their superior and tunable catalytic performance compared to carbon-supported SACs and commercial catalysts. The structure, surficial chemical groups, vacancy defects of non-carbon host materials, as well as the properties and population of single atoms, play important roles in the electrocatalytic performance of these SACs. The wide range of host materials and single atom types present limitless possibilities for the design of SACs with tunable structures and electrocatalysis behaviors.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Polymer Science
Saeid M. Elkatlawy, Abdelhamid A. Sakr, John Wang, Abdelnaby M. Elshahawy
Summary: In this study, an effective strategy was designed to combine transition metal sulfides with nitrogen doped reduced graphene oxide hydrogels, improving the overall supercapattery properties.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Hayden A. Evans, Dan Zhao, Pieremanuele Canepa, Anthony K. Cheetham, Dinesh Mullangi, Taner Yildirim, Yuxiang Wang, Zeyu Deng, Zhaoqiang Zhang, Thuc T. Mai, Fengxia Wei, John Wang, Angela R. Hight Walker, Craig M. Brown
Summary: The process of separating oxygen from air to create oxygen-enriched gas streams is important in both industrial and medical fields. However, existing technologies for this process are energy-intensive and require infrastructure. This study demonstrates that a metal-organic framework, Al(HCOO)3 (ALF), can effectively adsorb oxygen at near-ice temperatures, with good time-dependent selectivity. ALF exhibits a high oxygen adsorption capacity of approximately 1.7 mmol/g at 190K and atmospheric pressure, and approximately 0.3 mmol/g at salt-ice temperatures of 250K. ALF shows potential as a low-cost option for oxygen separation applications.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Zhaoqiang Zhang, Zeyu Deng, Hayden A. Evans, Dinesh Mullangi, Chengjun Kang, Shing Bo Peh, Yuxiang Wang, Craig M. Brown, John Wang, Pieremanuele Canepa, Anthony K. Cheetham, Dan Zhao
Summary: The exclusive capture of carbon dioxide (CO2) from hydrocarbon mixtures is crucial in the petrochemical industry. A new study introduces a ultramicroporous material, ALF, which can selectively capture CO2 from hydrocarbon mixtures with high capacity and efficiency. The material's unique pore chemistry allows for molecular recognition of CO2 by hydrogen bonding, while rejecting other hydrocarbons.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Hongfei Cheng, Jun Zhou, Huiqing Xie, Songlin Zhang, Jintao Zhang, Shengnan Sun, Ping Luo, Ming Lin, Shijie Wang, Zhenghui Pan, John Wang, Xian Jun Loh, Zhaolin Liu
Summary: Direct formic acid fuel cells (DFAFCs) are a promising energy source in the future low-carbon economy, but the lack of efficient electrocatalysts for anodic formic acid oxidation (FAO) hinders their scale-up and commercialization. The FAO performance of palladium hydrides (PdHx) has been found to be superior to pristine Pd, and this study explores the controlled synthesis and electrocatalytic behaviors of PdHx-based nanomaterials. The hydrogen intercalation-induced crystallization of PdNiP alloy nanoparticles is reported, and the obtained PdNiP-H nanoparticles exhibit excellent FAO performance, demonstrating their potential for DFAFC applications.
ADVANCED ENERGY MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Lu Mao, Xiaoyu Hao, Yu Zhang, Siew Yee Wong, Jiating He, Suxi Wang, Ximeng Liu, Xiaolei Huang, John Wang, Xu Li
Summary: In this study, hierarchical NiFe hydroxide-Cu arrays are prepared as the electrocatalysts for oxygen evolution reaction (OER) through solution etch and sequential electrolysis. The electrochemically reduced Cu nanoarrays serve as a conductive core, providing superior conductivity for electron transfer, while the unique hierarchical 3D structure offers a large active surface area, a short ion diffusion path, and open channels for efficient gas release. The resulting NiFe hydroxide-Cu arrays on copper foam exhibit outstanding catalytic performance with current densities of 10 and 100 mA cm(-2) achieved at 245 and 300 mV, respectively, in a 1 M KOH solution. Additionally, a small Tafel slope of 51 mV dec(-1) and excellent electrochemical durability of up to 100 h are demonstrated.
ACS APPLIED NANO MATERIALS
(2023)
Review
Materials Science, Multidisciplinary
Xianyang Zhang, Pengfei Chen, Siwuxie He, Bowen Jiang, Yong Wang, Yonghua Cheng, Jian Peng, Francis Verpoort, John Wang, Zongkui Kou
Summary: Biosensors featuring single molecule detection offer great opportunities in various fields, but face challenges due to the lack of activity, precision molecule selectivity, and understanding of the operating mechanism. Single-atom catalysts (SACs), particularly those that mimic the natural metalloenzyme structure, provide practical-use feasibilities for single molecule detections with high molecular selectivity and easy fabrication. This review discusses the history, advantages, and applications of SACs in molecule-scale biosensors, emphasizing their sensing modes and coordination-modulated signal amplifications.
Article
Chemistry, Multidisciplinary
Jianguo Sun, Binbin Liu, Qi Zhao, Chin Ho Kirk, John Wang
Summary: This article provides an overview of the research progress on MXenes in energy and catalysis, with a specific focus on the potential of termination-free MXene in catalysis and redox reactions. The authors believe that MX has great potential in future catalysis and propose the extension towards high entropy and single-atom modifications.
ADVANCED MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Yue Guo, Hanmei Jiang, Binbin Liu, Xingyang Wang, Yifu Zhang, Jianguo Sun, John Wang
Summary: Aqueous zinc-ion batteries (ZIBs) are considered promising for large-scale grid energy storage due to their safety, low costs, and environmental friendliness. Vanadium oxides, particularly V2O5, have been widely used as cathode materials for ZIBs because of their high theoretical capacity and structural stability. However, there are challenges in achieving high capacity, long lifespan, and excellent rate performance with vanadium-based ZIBs.
Article
Chemistry, Multidisciplinary
Weihao Liu, Jing Yang, Yizhe Zhao, Ximeng Liu, Jian Heng, Minghui Hong, Yong-Wei Zhang, John Wang
Summary: This study introduces a novel laser-ironing approach to modulate the structural and compositional evolution of electrocatalysts during the reaction, enhancing their performance and stability. The laser-ironing capping layer (LICL) formed during the process sustains the leaf-like morphology and promotes the formation of highly active Co3O4 nanoclusters. The results provide new insights into facile and high-precision surface microstructure control.
ADVANCED MATERIALS
(2023)
Review
Chemistry, Physical
Zhihao Lei, C. Sathish, Yanpeng Liu, Ajay Karokoti, John Wang, Liang Qiao, Ajayan Vinu, Jiabao Yi
Summary: This review highlights the recent progress of single-metal-atom catalysts in energy storage and conversion, covering synthetic strategies, various applications, and current challenges. It provides insights for developing high-performance single-metal-atom catalysts for catalytic and energy applications.
Article
Materials Science, Multidisciplinary
Mengjiao Dong, Liyun Liao, Chensheng Li, Yingxiao Mu, Yanping Huo, Zhong-Min Su, Fushun Liang
Summary: This study investigates the influence of the polarity of polymer matrices on persistent room-temperature phosphorescence (pRTP). It is discovered that intense phosphorescence emission can be achieved in highly polar matrices such as polyacrylic acid (PAA). The dipole-dipole interaction between the polar fluorophore and polar matrix is proposed to stabilize the excited state and facilitate the generation of efficient room-temperature phosphorescence emissions.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Han-Jiang Yang, Weijia Xiang, Xiangzhou Zhang, Jin-Yun Wang, Liang-Jin Xu, Zhong-Ning Chen
Summary: This article reports a 2D copper(I)-based cluster material for X-ray imaging, which exhibits ultra-high spatial resolution, high photoluminescence efficiency, and low detection limit. The material shows excellent linear response to X-ray dose rates and light output, and has the best spatial resolution among reported lead-free metal halide hybrids.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Review
Materials Science, Multidisciplinary
Taek Joon Kim, Sang-hun Lee, Dayeong Kwon, Jinsoo Joo
Summary: Donor-acceptor heterostructures using organic-inorganic halide perovskites, two-dimensional transition metal dichalcogenides, pi-conjugated organic small/macro molecules, and quantum dots are promising platforms for exciton-based photonics and optoelectronics. Hetero-interlayer excitons and hetero-intermolecular excitons formed through optical and/or electrical charge transfer in various heterostructures are important quasi-particles for light emission, detection, and harvesting systems.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Liemao Cao, Xiaohui Deng, Zhen-kun Tang, Rui Tan, Yee Sin Ang
Summary: We investigate the interface properties between WSi2N4 and Mo2B, O-modified Mo2B, and OH-modified Mo2B nanosheets. We find that WSi2N4 and Mo2B form n-type Schottky contacts, while functionalizing Mo2B with O and OH leads to the formation of both n-type and p-type ohmic contacts with WSi2N4. Additionally, we demonstrate the emergence of quasi-ohmic contact with ultralow lateral Schottky barrier and zero vertical interfacial tunneling barriers in Mo2B(OH)2-contacted WSi2N4.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Ga Eun Kim, Hae-Jin Kim, Heesuk Jung, Minwoo Park
Summary: This study presents a solution to the commercialization challenges of flexible LEDs based on MAPbBr(3) by incorporating polyurethane and an In-Ga-Zn-Sn liquid alloy. The designed devices showed high flexibility, efficiency, and durability, with improved electron injection and reduced defects, making them promising for next-generation displays.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Tao Shen, Zeng Wu, Zhen Jiang, Dongsheng Yan, Yan Zhao, Yang Wang, Yunqi Liu
Summary: Sidechain engineering is an important molecular design strategy for tuning the solid-state packing and structural ordering of conjugated polymers. The effects of sidechain direction on the optoelectronic properties of polymers and device performance were systematically investigated in this study. The results demonstrate that tuning the sidechain substitution direction can effectively improve the molecular structure and light absorption properties of polymers, providing new insights for the rational design of functional polymers.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Lotte Clinckemalie, Bapi Pradhan, Roel Vanden Brande, Heng Zhang, Jonathan Vandenwijngaerden, Rafikul Ali Saha, Giacomo Romolini, Li Sun, Dirk Vandenbroucke, Mischa Bonn, Hai I. Wang, Elke Debroye
Summary: In this study, a facile strategy using a non-conductive polymer was proposed to fabricate stable, pinhole-free thick films. The effect of introducing a second phase into CsPbBr3 perovskite crystals on their photophysical properties and charge transport was investigated. The dual phase devices exhibited improved stability and more effective operation at higher voltages in X-ray detection.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Jingye Zou, Shenglan Hao, Pascale Gemeiner, Nicolas Guiblin, Omar Ibder, Brahim Dkhil, Charles Paillard
Summary: When rare-earth ions are embedded in a ferroelectric material, their photoluminescence can serve as an all-optical probe for temperature, electric field, and mechanical stimulus. However, the impact of ferroelectric phase transitions on photoluminescence is not well understood. In this study, we demonstrate changes in the photoluminescence of green emission bands during critical ferroelectric transitions in an Er-doped BaTiO3 material. We also find that the intensity ratio and wavelength position difference of sub-peaks provide information on the phase transitions.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Jiangchao Han, Daming Zhou, Wei Yang, Chen Lv, Xinhe Wang, Guodong Wei, Weisheng Zhao, Xiaoyang Lin, Shengbo Sang
Summary: Rare type-II spin-gapless semiconductors (SGSs) have attracted increasing attention due to their unique spin properties. In this study, the interface contacts and spin transport properties of different devices composed of VSi2P4 ferromagnetic layers were investigated. The results show that VSi2P4 is a promising material for designing vertical van der Waals heterostructures with a giant tunnel magnetoresistance (TMR) in spintronic applications.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Tianqi Zhao, Renagul Abdurahman, Qianting Yang, Ruxiangul Aiwaili, Xue-Bo Yin
Summary: In this study, we designed and prepared Cr and Ba-doped gamma-Ga2O3 nanoparticles to achieve near-infrared emission and enhance the emission intensity. The emission mechanism was proposed based on the trap depth, band gap, and energy levels of Cr ions. The ratiometric temperature sensing and encryption information transfer demonstrated the potential applications of this technology.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Shuvankar Gupta, Jyotirmoy Sau, Manoranjan Kumar, Chandan Mazumdar
Summary: In this study, a new spin-gapless semiconductor material CoFeMnSn is reported, and its stable structure and spin-polarized band structure are determined through experimental realization and theoretical calculations. The compound exhibits a high ferromagnetic transition temperature, making it excellent for room temperature applications. The nearly temperature-independent resistivity, conductivity, and carrier concentration of the compound, adherence to the Slater-Pauling rule, and the high intrinsic anomalous Hall conductivity achieved through hole doping further confirm its spin-gapless semiconductor nature. Additionally, the compound's SGS and topological properties make it suitable for spintronics and magneto-electronics devices.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Ikumi Aratani, Yoji Horii, Yoshinori Kotani, Hitoshi Osawa, Hajime Tanida, Toshiaki Ina, Takeshi Watanabe, Yohko F. Yano, Akane Mizoguchi, Daisuke Takajo, Takashi Kajiwara
Summary: In this study, two-dimensional arrays of single-molecule magnets (SMMs) based on metal-organic frameworks (MOFs) were systematically modified through Langmuir-Blodgett methods and chemical modifications. The introduction of bulky alkoxide groups induced structural changes and perpendicular magnetic anisotropy. This research provides a promising strategy for the construction of high-density magnetic memory devices using molecular spintronics.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Zonghao Lei, Houhe Dong, Lijie Sun, Bing Teng, Yanfei Zou, Degao Zhong
Summary: Researchers have successfully developed four different up-conversion phosphors based on the Eulytite-type host Ba3Yb(PO4)(3). The optical temperature sensing properties of these phosphors were thoroughly investigated, and it was found that Ba3Yb(PO4)(3):Tm/Er/Ho showed potential for optical temperature measurement applications.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
C. Roncero-Barrero, M. A. Carvajal, J. Ribas-Arino, I. de P. R. Moreira, M. Deumal
Summary: This study computationally investigates the conductivity of four isostructural compounds with different Se contents, and reveals the parameters that define their conductivity in stable organic radical materials. The results provide insights into the influence of Se content on the conductivity and highlight the importance of considering multiple parameters in understanding the trends in conductivity.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Remi Arras, Kedar Sharma, Lionel Calmels
Summary: In this study, we investigated the interplay between structural defects in NiFe2O4, showing that the complex formed by a Ni-Oh/Fe-Td-cation swap and a neutral oxygen vacancy is more stable than these two isolated defects, and significantly reduces the width of the minority-spin band gap.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
