Article
Chemistry, Physical
Junsheng Luo, Jinqing Zhu, Fangyan Lin, Jianxing Xia, Hua Yang, Jinyu Yang, Ruilin Wang, Junyu Yuan, Zhongquan Wan, Ning Li, Christoph J. Brabec, Chunyang Jia
Summary: This study addresses the instability issue of Li-TFSI doping in perovskite solar cells and proposes a replacement, a fluorinated Fe(F20TPP)CI with hydrophobic property and high migration barrier. The optimized PSCs show high power conversion efficiency and long-term stability, meeting the demands of future photovoltaic applications.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Physical
Yueming Wang, Samah Akel, Benjamin Klingebiel, Thomas Kirchartz
Summary: Achieving high efficiencies in halide perovskite solar cells with thicknesses >1 μm is crucial for developing perovskite-Si tandem cells based on small pyramidal structures. Improving the quality of the perovskite layer and optimizing the properties of the charge-transport layers are essential for reducing charge-collection losses. Using bilayers of hole-transport layers can enhance charge collection and fill factors in thick inverted perovskite solar cells.
ADVANCED ENERGY MATERIALS
(2023)
Article
Energy & Fuels
Jing Xiao, Hui-Juan Yu, Dian Wang, Wei-Jie Gao, Akira Shinohara, Jianxing Xia, Guang Shao
Summary: A new hole-transporting material (XJ-05) based on a 9,9'-bicarbazole core and four acetylene-linked triphenylamine groups was designed and applied for perovskite solar cells (PSCs). The optical spectra, thermal stability, electrochemical properties, and other characteristics of XJ-05 were evaluated. PSCs based on doped XJ-05 achieved a comparable power conversion efficiency (PCE) to state-of-the-art hole-transporting material, but showed inferior stability. However, dopant-free XJ-05-based devices exhibited better stability than spiro-OMeTAD-based ones.
Article
Chemistry, Multidisciplinary
Ming-Wei An, Bao-Shan Wu, Shun Wang, Zuo-Chang Chen, Yin Su, Lin-Long Deng, Shu-Hui Li, Zi-Ang Nan, Han-Rui Tian, Xiao-Lin Liu, Da-Qin Yun, Qianyan Zhang, Su-Yuan Xie, Lan-Sun Zheng
Summary: A new type of HTM, cor-OMePTPA, has been designed and tested in planar n-i-p PSCs, showing good efficiency and stability compared to traditional HTMs, with better thermal stability.
CELL REPORTS PHYSICAL SCIENCE
(2021)
Article
Multidisciplinary Sciences
Ahmed Mourtada Elseman
Summary: A novel HTM based on silver thiocyanate (AgSCN) was synthesized and characterized for its use in p-i-n perovskite solar cells (PSCs). Thin, conformal AgSCN films were produced using a fast solvent removal approach, enabling quick carrier extraction and collection. The addition of AgSCN improved charge transfer between the HTL and perovskite layer, leading to enhanced performance compared to PEDOT:PSS. Crystallographic discrepancies were observed in the perovskite film, indicating the development of templated perovskite on the surface of AgSCN. With a high open circuit voltage (V-OC) and power conversion efficiency (PCE) of 16.66%, AgSCN-based PSCs show great potential for application in flexible modules or as a front cell in hybrid tandem solar cells.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Multidisciplinary
Jiaonan Sun, Ke Ma, Zih-Yu Lin, Yuanhao Tang, Dharini Varadharajan, Alexander X. Chen, Harindi R. Atapattu, Yoon Ho Lee, Ke Chen, Bryan W. Boudouris, Kenneth R. Graham, Darren J. Lipomi, Jianguo Mei, Brett M. Savoie, Letian Dou
Summary: Polymer as a hole-transporting layer can enhance the stability of perovskite solar cells. By molecular side-chain engineering, a uniform 2D perovskite interlayer with conjugated ligands is successfully constructed, improving the interfacial adhesion. The PTAA-based solar cells with the thin and lateral extended 2D/3D heterostructure achieved a PCE of 23.7%, higher than the reference devices' 18%. Devices with the new ligands also exhibited superior thermal and moisture stability.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Xinyu Yu, Zhen Li, Xianglang Sun, Cheng Zhong, Zonglong Zhu, Zhong'an Li, Alex K-Y Jen
Summary: Low cost, highly efficient dopant-free hole transporting materials (HTMs) are essential for the commercialization of perovskite solar cells. A facile synthetic route was designed to prepare two new HTMs with low lab synthetic costs, enabling optimization of photophysical and charge transporting properties. BTF6, with metamethoxyl substitutions, exhibited significantly better device efficiency compared to BTF5, due to its matched energy levels with perovskites and enhanced hole mobility.
Article
Chemistry, Multidisciplinary
Ankush Kumar Tangra, Mohammed Benali Kanoun, Souraya Goumri-Said, Ahmed-Ali Kanoun, Kevin Musselman, Jaspinder Kaur, Gurmeet Singh Lotey
Summary: Perovskite solar cells using inorganic hole and electron transport layers (HTL and ETL) have been studied to enhance efficiency. The study found that the use of strontium ferrite (SrFe2O4) as HTL and zinc oxide (ZnO) as ETL improved power conversion efficiency. Numerical modeling showed the importance of optimizing layer thickness and defect density for better solar cell performance.
Article
Chemistry, Multidisciplinary
Mingyuan Han, Yongpeng Liang, Jianlin Chen, Xianfu Zhang, Rahim Ghadari, Xuepeng Liu, Nan Wu, Ying Wang, Ying Zhou, Yong Ding, Molang Cai, Haibin Chen, Songyuan Dai
Summary: The development of stable and efficient hole-transporting materials is crucial for the commercialization of perovskite solar cells. In this study, a novel spiro-type HTM called spiro-carbazole was designed and synthesized. The spiro-carbazole-based devices exhibited higher efficiency and improved stability compared to traditional spiro-OMeTAD.
Article
Chemistry, Physical
Jianxing Xia, Yi Zhang, Chuanxiao Xiao, Keith Gregory Brooks, Min Chen, Junsheng Luo, Hua Yang, Nadja Isabelle Desiree Klipfel, Jihua Zou, Yu Shi, Xiaojun Yao, Jiangzhao Chen, Joseph M. Luther, Hongzhen Lin, Abdullah M. Asiri, Chunyang Jia, Mohammad Khaja Nazeeruddin
Summary: This study reports a new dopant, DIC-PBA, as an alternative to Li-TFSI/t-BP, which improves the stability and efficiency of perovskite solar cells. Experimental results show that DIC-PBA can effectively dope HTMs and the perovskite surface, improving interfacial charge transport and thus enhancing the stability and efficiency of the cells.
Article
Chemistry, Physical
Dong Won Kim, Kang-Hoon Choi, Seung Hwa Hong, Hyun-Sik Kang, Ji Eon Kwon, Sungjin Park, Byeong-Kwan An, Soo Young Park
Summary: The development of a new concept of hole transporting materials (HTMs) has led to the advancement of high-performing and stable perovskite solar cells (PSCs). Small molecular organic semiconductors, known for their reproducibility and easy synthesis, have been extensively studied for HTM. This research introduces a novel linear-type series of indoloindole (IDID)-based hole transporting materials, consisting of a fluorinated IDID core (IDIDF) and multiple thiophene rings. The structure-property relationship of the IDIDF derivatives is systematically investigated, resulting in the identification of an optimized material that exhibits improved solubility, favorable molecular packing patterns, and superior hole mobility. The champion PSCs using this optimal molecule, IDIDF2, achieve remarkable thermal and moisture stabilities, making them one of the highest performing n-i-p planar device configurations to date.
ADVANCED ENERGY MATERIALS
(2023)
Article
Energy & Fuels
Zheng Zhang, Ligang Yuan, Bin Li, Huiming Luo, Sijing Wang, Zhijun Li, Yifan Xing, Jiarong Wang, Peng Dong, Kunpeng Guo, Zhongqiang Wang, Keyou Yan
Summary: A new spiro-based HTM, Spiro-4TFETAD, was developed by replacing methoxy groups in Spiro-OMeTAD with trifluoroethoxy substituents, exhibiting lower HOMO level, higher thermal stability, hole mobility, and hydrophobicity. PSCs utilizing Spiro-4TFETAD achieved a high power conversion efficiency of 21.11% and excellent humidity resistance, showcasing the promising potential of trifluoroethoxyl molecular design in creating efficient and stable PSCs.
Article
Energy & Fuels
Qurat Ul Ain, Jianxing Xia, Hiroyuki Kanda, Imanah Rafieh Alwani, Xiao-Xin Gao, Habib Ur Rehman, Guang Shao, Vygintas Jankauskas, Kasparas Rakstys, Ammar Ahmed Khan, Mohammad Khaja Nazeeruddin
Summary: Hexakis(hexyloxy)triphenylene (HAT6) discotic liquid crystal is used as a transparent hole-transporting material (HTM) for perovskite solar cells (PSCs), achieving a power conversion efficiency (PCE) of 15.7%, the highest among HAT6 HTMs. Despite lower PCE than spiro-OMeTAD-based devices (20.3%), HAT6-based PSCs show much higher ambient and thermal stability.
Article
Chemistry, Physical
Rui Liu, Yue Yu, Taotao Hu, Fu Zhang, Chang Liu, Hongming Hou, Meng Zhang, Xin Chen, Hua Yu
Summary: This study demonstrates the use of sol-gel method to prepare ideal wetting surface NiOx as a HTM, which can improve the power conversion efficiency of quasi two-dimensional perovskite solar cells, providing a promising alternative to organic polymer HTM materials.
JOURNAL OF POWER SOURCES
(2021)
Article
Energy & Fuels
Aiste Jegorove, Minh Anh Truong, Richard Murdey, Maryte Daskeviciene, Tadas Malinauskas, Kristina Kantminiene, Vygintas Jankauskas, Vytautas Getautis, Atsushi Wakamiya
Summary: Five new star-shaped carbazole-based molecules were successfully synthesized as hole transporting materials in perovskite solar cells to replace spiro-OMeTAD. These molecules exhibited comparable power conversion efficiencies to spiro-OMeTAD, with two candidate molecules showing superior thermal stability due to ethyl side chains.
Article
Chemistry, Multidisciplinary
Jun Wang, Ganghai Ni, Wanru Liao, Kang Liu, Jiawei Chen, Fangyang Liu, Zongliang Zhang, Ming Jia, Jie Li, Junwei Fu, Evangelina Pensa, Liangxing Jiang, Zhenfeng Bian, Emiliano Cortes, Min Liu
Summary: Photoelectrochemical (PEC) water splitting is a promising approach for renewable solar light conversion, but surface Fermi level pinning severely restricts the PEC activities. Theoretical calculations suggest that subsurface oxygen vacancies could release the Fermi level pinning and maintain the active structure. A series of metal oxide semiconductors with subsurface oxygen vacancies were prepared and demonstrated to eliminate surface trap states and de-pin the Fermi level. Superior PEC performances were achieved on BiVO4, Bi2O3, and TiO2, surpassing most reported works under the same conditions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Yulin Zhou, Jiawei Chen, Liangxing Jiang
Summary: Through industrial testing, it was found that the frame structure composite porous anode has advantages over the traditional flat plate anode in terms of saving DC, reducing corrosion rate, improving product quality, reducing the depletion of Mn2+ in the electrolyte, and decreasing the formation of anode slime. Furthermore, the apparent porosity of the composite porous anode leads to a significant reduction in capital cost for the electrowinning process.
Article
Green & Sustainable Science & Technology
Binyuan Tang, Fan Yang, Chaoyi Chen, Changping Shi, Wei Deng, Junqi Li, Liangxing Jiang
Summary: In this study, a novel lead-based pseudo dimensional stable anode (LBP-DSA) was proposed to overcome the deficiencies of lead-based anodes and retain the advanced characteristics of the DSA. A robust lead-based/TiB2 substrate was constructed to eliminate lead pollution and provide suitable anchors for subsequent layer adhesion. The synergistic effects of TiB2 with gamma-MnO2 showed great potential in energy-saving and hazardous anode slime reduction, making LBP-DSA a promising candidate for cleaner production of metallic manganese.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Materials Science, Multidisciplinary
Ming Jia, Maogui Zhang, Qiang Zeng, Jicheng Deng, Yimin Liu, Fangyang Liu, Liangxing Jiang, Liang Ai, Yan Ai
Summary: PEDOT films with different reaction time were prepared by vapor phase polymerization to investigate the mechanisms of structure and performance changes. The polymerization process was found to have three different periods corresponding to different crystallinity states. Excessive reaction time led to changes in polymer crystallinity and decreased conductivity.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Ting Qin, Xiaohui Gao, Pin Zhang, Longlong Qin, Chen Li, Haipeng Xie, Shengxiang Huang, Congwei Liao, Lianwen Deng
Summary: In this study, flexible films of polyaniline/carbon quantum dots were fabricated using the electropolymerized approach. The films exhibited excellent electrochromic properties and demonstrated good infrared emissivity modulation performances. The integrated electrochromic device based on the fabricated films achieved dynamic conversion and showed promising applications in adaptive IR sensors and thermoregulation.
ORGANIC ELECTRONICS
(2023)
Article
Crystallography
Siwen You, Xiao Guo, Junjie Jiang, Dingbang Yang, Mingjun Li, Fangping Ouyang, Haipeng Xie, Han Huang, Yongli Gao
Summary: Van der Waals (vdW) epitaxial growth was used to prepare vdW PbI2/CrOCl heterostructures by in situ thermally depositing PbI2 onto exfoliated thin-layered CrOCl nanoflakes in high vacuum. The structural properties and phonon behaviors of the heterostructures were investigated using optical microscopy, atomic force microscopy, X-ray diffraction, and temperature-dependent Raman spectroscopy. The morphology of PbI2 films on the CrOCl substrate varied with the substrate temperature, changing from hemispherical granules to 2D nanoflakes with flat top surfaces. An anomalous blueshift of the A(g)(1) and A(u)(2) mode in the PbI2/CrOCl heterostructure with increasing temperature was observed for the first time. The results provide a new material platform for vdW heterostructures and a potential method for optimizing heterostructure growth behaviors.
Article
Materials Science, Multidisciplinary
Xiangyun Zhao, Yining Pan, Siliang Liu, Liangxing Jiang, Yanqing Lai, Fangyang Liu
Summary: In this study, a facile and environmentally friendly additive strategy is used to tailor the precursor solution chemistry of CZTS. This approach improves the quality of CZTSSe absorber films and results in a high-performance solar cell device.
SCIENCE CHINA-MATERIALS
(2023)
Article
Electrochemistry
Hehui Zhang, Chang Deng, Yutong Zong, Qingsong Zuo, Haipeng Guo, Shuai Song, Liangxing Jiang
Summary: This study investigates the parameter identification of equivalent circuit models for lithium-ion batteries using different sample intervals. Results show that the fitting performance of the second-order model slightly declines when the sample interval is more than 0.5 seconds, while the first-order model performs well under low sampling frequency.
Article
Chemistry, Multidisciplinary
Rundong Fan, Qizhen Song, Zijian Huang, Yue Ma, Mengqi Xiao, Xudan Huang, Huachao Zai, Jiaqian Kang, Haipeng Xie, Yongli Gao, Lina Wang, Yu Zhang, Lan Wang, Feng Wang, Xiao Zhang, Wentao Zhou, Nengxu Li, Xueyun Wang, Yang Bai, Guilin Liu, Qi Chen, Lifen Wang, Huanping Zhou
Summary: In this study, a tungstate/perovskite heterointerface was constructed at the grain boundary grooves using a two-step in situ reaction approach, which effectively solved the issue of carrier loss and suppressed recombination loss. Based on this strategy, solar cells exhibited good universality in both normal and inverted structure.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Physics, Applied
Dingbang Yang, Junjie Jiang, Jiaxin Chen, Xiao Guo, Xinhui Yang, Xiaoming Zheng, Chuyun Deng, Haipeng Xie, Fei Song, Fangping Ouyang, Xiaoming Yuan, Mingxing Chen, Han Huang
Summary: We fabricated high quality 2D/3D MoS2/MoO2 heterostructures with atomic clean interface using one-step chemical vapor deposition. The study revealed the specific epitaxial relationship between MoS2 and MoO2 and demonstrated the interfacial charge transfer from MoS2 to MoO2. The in-plane anisotropy induced by MoO2 in MoS2 expands the application of isotropic MoS2 in polarization-dependent fields.
APPLIED PHYSICS LETTERS
(2023)
Article
Metallurgy & Metallurgical Engineering
Jian Yang, Yuan Zhou, Zong-liang Zhang, Kai-hua Xu, Kun Zhang, Yan-qing Lai, Liang-xing Jiang
Summary: An electric field enhanced leaching process was proposed to improve the leaching efficiency of Li, Ni, Co, and Mn extraction from waste lithium-ion batteries. Under optimized conditions, over 98% Li, 97% Ni and Co, and 93% Mn were leached into solution. The leaching process was controlled by chemical reaction based on a nuclear reduction model, with activation energy values of 42.4, 46.1, 46.2, and 47.3 kJ/mol for Li, Ni, Co, and Mn, respectively. The application of an electric field facilitated the recycling of Fe2+ and Cl-, reduced reducing agent usage, and ensured a high metal leaching rate.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2023)
Review
Chemistry, Physical
Dingyu Cui, Ronghao Wang, Chengfei Qian, Hao Shen, Jingjie Xia, Kaiwen Sun, He Liu, Cong Guo, Jingfa Li, Feng Yu, Weizhai Bao
Summary: Recently, extensive research has been conducted on Prussian blue analogues (PBAs)-based anode materials, including oxides, sulfides, selenides, phosphides, borides, and carbides, in the field of energy conversion and storage. PBAs possess unique properties such as high theoretical specific capacity, environmental friendliness, and low cost. The formation of PBAs in conjunction with other materials and the improvement of composite materials' electrochemical performance have been thoroughly discussed. New insights have been provided for the manufacture of low-cost, high-capacity, and long-life battery materials by combining advanced manufacturing technology and principles. Lastly, the future challenges and opportunities of PBAs and their composites have been discussed.
Article
Materials Science, Multidisciplinary
Jun Wang, Jiawei Chen, Wanru Liao, Fangyang Liu, Min Liu, Liangxing Jiang
Summary: A BiOI/AgI/Ag plasmonic heterostructure photocathode was successfully designed through electrodeposition, ion-exchange, and illumination methods. This photocathode exhibits superior performance in photoelectrochemical water splitting.
Article
Materials Science, Multidisciplinary
Huaqing Shen, Shenghao Jing, Siliang Liu, Yuting Huang, Fangbo He, Yang Liu, Zhi Zhuang, Zongliang Zhang, Fangyang Liu
Summary: This study investigates the effect of carbon-based conductive agents (CAs) on the performance of sulfide-based all-solid-state batteries (ASSBs). The results show that under low mass loading, CAs can deteriorate the performance of the cell due to side reactions with solid electrolytes. However, under high mass loading, CAs can promote charge transfer. The gradient design strategy is applied to minimize the adverse effects of CAs and optimize the electrode performance.
ADVANCED POWDER MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Qiang Zeng, Qingman Ma, Linhong Li, Bolin Zheng, Yining Pan, Xiangyun Zhao, Hanrui Xiao, Chang Yan, Fangyang Liu
Summary: PbI2 films are crucial for the quality of PVK films in a two-step sequential deposition process. Microcrystal powder of PbI2 (P-PbI2) in micrometer size can produce higher-quality PbI2 films under low humidity conditions, while millimeter-sized PbI2 crystals (C-PbI2) allow the growth of denser films under heavy humidity conditions. PVK solar cells fabricated with P-PbI2 achieve the best power conversion efficiency (PCE) of 23.30% under low humidity of 30 +/- 5%, while C-PbI2 results in an impressive PCE of 21.09% under humidity conditions of 50 +/- 5%. This work offers insights for selecting lead iodide for PSC fabrication under air conditions.
CHEMICAL COMMUNICATIONS
(2023)
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)
