Article
Chemistry, Organic
Yinghua Li, Jiang Jin, Weibin Fan, Deguang Huang
Summary: A simple method for the synthesis of indolo-[3,2-a]-carbazole-6-carbaldehydes by the pi-extension of indoles with acrolein is reported. The scope and versatility of the method are demonstrated with 33 examples. The resulting products exhibit high activities in advanced synthesis and have proven to be capable of producing valuable natural products, dyes, and organic fluorescent materials. Additionally, the alkaloid racemosin B can be efficiently prepared using this method with a relatively high overall yield of approximately 50%.
Article
Chemistry, Applied
Hongyan Yang, Yanmei Li, Yuling Zhao, Shupei Yu, Hailin Ma, Long Qian, Ruidong Wang, Tianzhi Yu, Wenming Su
Summary: Four new indolo [3,2-b]carbazole derivatives with imidazole-derived moieties were successfully synthesized for highly efficient blue light-emitting devices. These hybrid compounds exhibited strong blue emissions in solutions and showed promising electroluminescence performance.
Article
Chemistry, Multidisciplinary
Junfeng Guo, Yan Zeng, Yonggang Zhen, Hua Geng, Zongrui Wang, Yuanping Yi, Huanli Dong, Wenping Hu
Summary: This study utilized non-equal ratio cocrystal engineering to construct cocrystals with more appropriate packing structure through hydrogen bonds and donor-acceptor interactions, leading to an improved carrier mobility of organic semiconductors.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Irene Badia-Dominguez, Miriam Pena-Alvarez, Deliang Wang, Andres Perez Guardiola, Yolanda Vida, Sandra Rodriguez Gonzalez, Juan T. Lopez Navarrete, Victor Hernandez Jolin, Juan C. Sancho Garcia, Valentin Garcia Baonza, Rosie Nash, Frantisek Hartl, Hongxiang Li, M. Carmen Ruiz Delgado
Summary: This study describes the synthesis and properties of a dicyanomethylene-substituted indolo[3,2-b]carbazole diradical ICz-CN and its chemical behavior under different conditions. Experimental results show that ICz-CN exhibits similar characteristics in different oxidation states and undergoes chromism under certain conditions.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Physical
Chengjin Wei, Yingchao Yan, Tong Zhang, Yuling Zhao, Tianzhi Yu
Summary: Two indolo[3,2-b]carbazole-based non-fullerene acceptors (ICZ-IC and ICZ-ICF) with a A-pi-D-pi-A structure were synthesized. The photophysical and electrochemical properties were investigated. The highest power conversion efficiencies achieved were 2.51% and 1.26% for PBDB-T:ICZ-IC and PBDB-T:ICZ-ICF, respectively.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Chemistry, Multidisciplinary
Deyu Liu, Yusheng Lei, Xiaozhou Ji, Yilei Wu, Yangju Lin, Yunfei Wang, Song Zhang, Yu Zheng, Yuelang Chen, Jian-Cheng Lai, Donglai Zhong, Hao-Wen Cheng, Jerika A. Chiong, Xiaodan Gu, Sangah Gam, Youngjun Yun, Jeffrey B-H Tok, Zhenan Bao
Summary: This study improves the understanding of the design concept by investigating the effect of bulky side groups asymmetrically substituted on conjugated polymer semiconductor backbones. The results show that the introduction of conjugated rigid fused-rings with bulky side groups can improve the mechanical stretchability and electrical properties of the material.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Yuyang Zhang, Fuqiang Chen, Jie Zheng, Zhongming Song, Yanping Wang, Yueyuan Mao, Jing Tang, Jiahao Guo, Xuchun Wang
Summary: In this study, four novel compounds were synthesized, and their fluorescence performances were investigated. It was found that these compounds exhibited aggregation-induced emission enhancement in solution, and the mechanism behind this enhancement was attributed to the distorted spatial structure of certain groups. Additionally, two of the compounds showed mechanofluorochromic properties, which were a result of changes in the internal structure of the molecules. This study provides an efficient strategy for understanding photophysical properties and designing more mechanofluorochromic materials.
Article
Engineering, Electrical & Electronic
Roger Bujaldon, Anna Vilche, Joaquim Puigdollers, Cristina Puigjaner, Xavier Alcobe, Dolores Velasco
Summary: This study presents the synthesis of five diindolo[3,2-b:2 ',3 '-h]carbazole derivatives and their application in organic thin-film transistors. The single-crystal structures of these compounds were elucidated by powder X-ray diffraction analysis, providing insight into the intermolecular arrangement. By fine-tuning the length of alkyl chains and the type of passivation layer, a range of mobility values from 10(-6) to 10(-3) cm(2) V-1 s(-1) was achieved. Remarkably, these devices exhibited excellent temporal and air stability with a shelf lifetime of up to several years, confirming the potential of this research.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Physical
Tongyu Zhao, Wenjun Ni, Christian Kloc, Licheng Sun, Gagik G. Gurzadyan
Summary: The study found that singlet fission (SF) can be directly observed in ICZ films, while SF and polaron formation compete in the ultrafast timescale in ICZ crystals.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Organic
Rajendra Kumar Konidena, Seyoung Oh, Seokwoo Kang, Sang-Shin Park, Hayoon Lee, Jongwook Park
Summary: In this study, we designed and synthesized two new rigid building blocks and tethered them with different chromophores to form a series of violet-blue fluorophores. The compounds exhibited excellent optical and electrical properties and showed promising performance in organic light-emitting diodes.
JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Physical
YeonJu Kim, Bowen Yang, Jiajia Suo, Egle Jatautiene, Jurate Simokaitiene, Ranush Durgaryan, Dmytro Volyniuk, Anders Hagfeldt, Gjergji Sini, Juozas V. Grazulevicius
Summary: Newly developed indolo[3,2-b]carbazole-based hole transporting materials offer an alternative to conventional additives-containing materials for dopant-free perovskite solar cells (PSCs), showing good energy level alignment and hole transporting properties. Through investigating the influence of substituents, the specific physical properties of the compounds were determined, leading to higher power conversion efficiencies without the need for additives.
Article
Chemistry, Multidisciplinary
Jie Xu, Hung-Chin Wu, Jaewan Mun, Rui Ning, Weichen Wang, Ging-Ji Nathan Wang, Shayla Nikzad, Hongping Yan, Xiaodan Gu, Shaochuan Luo, Dongshan Zhou, Jeffrey B. -H. Tok, Zhenan Bao
Summary: A method of modifying the packing structure of polymer semiconductors using a molecular additive DOP is reported in this study, which improves the mechanical stretchability of polymers without affecting their charge-carrier transport properties.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Organic
Gowsia Jan, Diksha Rajput, Anish Gupta, Dolma Tsering, Muthu Karuppasamy, Kamal K. Kapoor, Vellaisamy Sridharan
Summary: An efficient catalytic reaction method for the direct synthesis of valuable indolo[3,2-b]carbazole compounds has been reported in this study. The method exhibits high atom- and step-economy, and generates multiple new chemical bonds in a single synthetic operation.
ORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Prabhath L. Gamage, Chinthaka M. Udamulle Gedara, Ruwan Gunawardhana, Chandima Bulumulla, Ziyuan Ma, Ashutosh Shrivastava, Michael C. Biewer, Mihaela C. Stefan
Summary: The optoelectronic properties and field-effect mobilities of organic semiconductors can be improved by altering the structure of semiconducting polymer backbones. In this study, we report the synthesis of a donor-acceptor polymer with improved crystallinity and molecular packing by introducing a furan spacer. The tested organic field-effect transistor devices showed high hole mobility and low threshold voltage in a bottom-gate bottom-contact device configuration.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Multidisciplinary
Garion E. J. Hicks, Sheng Li, Nimrat K. Obhi, Charles N. Jarrett-Wilkins, Dwight S. Seferos
Summary: π-Conjugated polymers have unique properties that depend on their ordering, with programming techniques such as covalent and solution programming playing a key role in controlling their assembly. Progress in programming at different stages of material development highlights order-dependent features and unique assembly techniques for pi-conjugated polymers.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Physical
Roger Bujaldon, Joaquim Puigdollers, Dolores Velasco
Summary: The study focused on ladder-type molecules with extended aromatic backbones in the optoelectronic field. Two derivatives with different alkylation patterns were studied, leading to the discovery that fluorophores containing sulfoxide substantially increased blue fluorescence. The research shed light on the relationship between chemical structure and emission, showing potential for future applications.
Article
Energy & Fuels
Alex J. Lopez-Garcia, Oriol Blazquez, Cristobal Voz, Joaquim Puigdollers, Victor Izquierdo-Roca, Alejandro Perez-Rodriguez
Summary: This study reports the fabrication of UV-blue selective transparent solar cells based on ultrathin intrinsic hydrogenated amorphous silicon films, showing their potential for applications in building-integrated PV and agrophotovoltaics, as well as in low-power devices and Internet of Things devices as a cost-effective power source. The devices exhibit high visible transmittance, power conversion efficiency, and light utilization efficiency, demonstrating the potential of the proposed device architectures for the development of highly transparent devices.
Article
Nanoscience & Nanotechnology
Ivan Cano, Pedro Vidal-Fuentes, Lorenzo Calvo-Barrio, Xavier Alcobe, Jose Miguel Asensi, Sergio Giraldo, Yudania Sanchez, Zacharie Jehl, Marcel Placidi, Joaquim Puigdollers, Victor Izquierdo-Roca, Edgardo Saucedo
Summary: By controlling the composition of Sb2Se3, this study found that it does not allow an extended range of nonstoichiometric conditions but compensates for excess Sb or Se by forming secondary phases. It was also discovered that operating under Se-rich conditions can improve the crystalline orientation, possibly due to the formation of a MoSe2 phase in the back interface.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Energy & Fuels
Gerard Masmitja, Eloi Ros, Rosa Almache-Hernandez, Benjamin Pusay, Isidro Martin, Cristobal Voz, Edgardo Saucedo, Joaquim Puigdollers, Pablo Ortega
Summary: This study successfully demonstrates the fabrication of high efficiency IBC c-Si(n) solar cells using transition metal oxide films as carrier-selective contacts deposited by ALD technique, achieving excellent photovoltaic efficiencies and pseudo efficiencies.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Article
Chemistry, Physical
Isidro Martin, Gema Lopez, Moises Garin, Cristobal Vez, Pablo Ortega, Joaquim Puigdollers
Summary: In this study, surface passivation of p-type c-Ge is achieved using an amorphous silicon carbide/aluminium oxide film stack. The results show that the introduction of a thin a-SiCx interlayer improves surface passivation, with the best result obtained when the thickness of a-SiCx is 1 nm.
SURFACES AND INTERFACES
(2022)
Article
Energy & Fuels
Alex J. Lopez-Garcia, Cristobal Voz, Jose Miguel Asensi, Joaquim Puigdollers, Victor Izquierdo-Roca, Alejandro Perez-Rodriguez
Summary: This study presents the fabrication of transparent solar cells using nanometric intrinsic hydrogenated amorphous silicon films and oxide thin films as transparent carrier selective contacts. These ultrathin devices exhibit photovoltaic effect, high visible transmittance, and shifted spectral response. The prototypes with 30 nm a-Si:H film achieved an average visible transmittance of 35% and a photovoltaic conversion efficiency of 2%, which is a record for oxide-based transparent solar cells. These findings highlight the potential of these architectures for highly transparent energy harvesters in various applications.
Article
Nanoscience & Nanotechnology
E. Ros, T. Tom, P. Ortega, I. Martin, E. Maggi, J. M. Asensi, J. Lopez-Vidrier, E. Saucedo, J. Bertomeu, J. Puigdollers, C. Voz
Summary: This study compares conjugated polyelectrolyte (CPE) films based on PAMAM G1 and G3 to branched polyethylenimine (b-PEI) polymer using methanol as the solvent. The results show that these materials, especially PAMAM G3, have high surface potentials and low specific contact resistance when applied on n-type silicon. Furthermore, when combined with vanadium oxide, PAMAM G3 can significantly enhance the performance of silicon solar cells.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Biochemistry & Molecular Biology
David Rovira, Eloi Ros, Thomas Tom, Maykel Jimenez, Jose Miguel Asensi, Cristobal Voz, Julian Lopez-Vidrier, Joaquim Puigdollers, Joan Bertomeu, Edgardo Saucedo
Summary: In this study, a ZnO-based buffer layer with a polymer-film-modified top interface was proposed to replace CdS in Sb2Se3 photovoltaic devices, addressing the issue of high open-circuit voltage. The addition of a branched polyethylenimine layer at the ZnO and transparent electrode interface enhanced the performance of Sb2Se3 solar cells, resulting in an important increase in open-circuit voltage from 243 mV to 344 mV and a maximum efficiency of 2.4%. This study aims to establish a relation between the use of conjugated polyelectrolyte thin films in chalcogenide photovoltaics and the resulting device improvements.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Physical
Thomas Tom, Eloi Ros, Julian Lopez-Vidrier, Jose Miguel Asensi, Pablo Ortega, Joaquim Puigdollers, Joan Bertomeu, Cristobal Voz
Summary: Poly(amidoamine) (PAMAM) dendrimers are used to modify metal-semiconductor junctions by forming a dipole layer, resulting in electron-selective contacts in silicon heterojunction solar cells. By adjusting the work function, the PAMAM dendrimer interlayer eliminates Fermi level pinning, creating an ohmic contact between the metal and the semiconductor. A silicon heterojunction solar cell with the PAMAM interlayer achieved a power conversion efficiency of 14.5%, an 8.3% increase compared to the reference device without the dipole interlayer.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Energy & Fuels
Isidro Martin, Gema Lopez, Moises Garin, Eloi Ros, Pablo Ortega, Cristobal Voz, Joaquim Puigdollers
Summary: Thermophotovoltaics is a promising technology for heat-to-electricity conversion with high conversion efficiencies. However, the use of III-V semiconductors contributes to high device cost. This study explores the use of crystalline germanium (c-Ge) as a low-cost substrate and evaporated transition metal oxides (MoOx, VOx, WOx) as hole selective contacts to improve device performance.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2023)
Article
Materials Science, Multidisciplinary
Roger Bujaldon, Alba Cuadrado, Dmytro Volyniuk, Juozas V. Grazulevicius, Joaquim Puigdollers, Dolores Velasco
Summary: Star-shaped triindole core is a promising system for designing new organic materials with attractive charge-transport properties. Three thiophene-containing triindole derivatives with different lengths of N-alkyl chains were synthesized and their impact on crystallinity and semiconductor performance was analyzed. All derivatives exhibited p-type semiconductor properties, with the attachment of longer alkyl chains and functionalization of the silicon substrate showing improved characteristics. The analysis of thin films also confirmed that derivatives with longer N-alkyl chains conferred a higher degree of order and a more suitable morphology.
Article
Engineering, Electrical & Electronic
Roger Bujaldon, Anna Vilche, Joaquim Puigdollers, Cristina Puigjaner, Xavier Alcobe, Dolores Velasco
Summary: This study presents the synthesis of five diindolo[3,2-b:2 ',3 '-h]carbazole derivatives and their application in organic thin-film transistors. The single-crystal structures of these compounds were elucidated by powder X-ray diffraction analysis, providing insight into the intermolecular arrangement. By fine-tuning the length of alkyl chains and the type of passivation layer, a range of mobility values from 10(-6) to 10(-3) cm(2) V-1 s(-1) was achieved. Remarkably, these devices exhibited excellent temporal and air stability with a shelf lifetime of up to several years, confirming the potential of this research.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Thondaiman Pugalenthiyar, Chellan Justin Raj, Ramu Manikandan, Dennyson Savariraj Antonysamy, Joaquim Puigdollers, Cengiz Kaya, Byung Chul Kim
Summary: This study presents a hierarchical cobalt carbonate hydroxide (CCH) nanostructure modified with tin oxide, forming unique two-dimensional interlayered heterostructures. The modified electrode exhibits high conductivity and electroactive sites, leading to enhanced energy storage performance. The hybrid supercapacitor (HSC) constructed using the modified CCH electrode shows high specific capacitance, energy, and power, with excellent capacitance retention even after a large number of cycles.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Ramu Manikandan, Antonysamy Dennyson Savariraj, Goli Nagaraju, A. M. Kale, J. Puigdollers, Hyejin Park, Hyun-Soo Kim, Jae-Min Oh, Justin Raj, Byung Chul Kim
Summary: Interfacial engineering of 2D monometallic phosphides allows for remarkable structural and electrochemical properties in energy storage devices. FeP2/Co2P 2D nanosheets on Ni-foam were grown using a solution-based and phosphorization approach, resulting in freestanding electrodes with high performance. The use of an effective phosphorization strategy improved crystalline phase, morphology, and electrochemical performances. The FCP NSs electrode exhibited battery-type redox behavior and achieved a maximum high areal capacity in aqueous electrolyte, outperforming other counterparts. Furthermore, a supercapattery assembled with FCP and activated carbon electrodes exhibited excellent cycling stability and demonstrated practical applications by powering LEDs, showcasing the superior real-time performance of energy storage devices.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Energy & Fuels
Alex Jimenez-Arguijo, Ivan Cano, Fabien Atlan, Yuancai Gong, Kunal J. Tiwari, Marcel Placidi, Joaquim Puigdollers, Zacharie Jehl Li-Kao, Edgardo Saucedo, Sergio Giraldo
Summary: This study explores the effects of applied voltage on the CdS/kesterite interface quality during thermal post-deposition treatments above the critical temperature, and models the effects of a shallow doping density gradient on the current-voltage curves and external quantum efficiency. The results suggest that this defect engineering approach shows promise in improving charge carrier selectivity in kesterite devices.
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)
