Article
Chemistry, Applied
David Moe Almenningen, Henrik Erring Hansen, Audun Formo Buene, Bard Helge Hoff, Odd Reidar Gautun
Summary: To achieve high photocurrents, it is essential for dye-sensitized solar cells (DSSC) to effectively absorb sunlight. This study investigates the use of oligothiophene pi-spacers in triarylamine dyes and assesses their suitability for modern copper based DSSC devices. The results show that the dye with the smallest pi-spacer, dithieno[3,2-b:2',3' -d]thiophene, exhibited the highest efficiency. The DSSC device sensitized by this dye achieved a power conversion efficiency of 4.4%. Additionally, thinner TiO2 layers were found to result in better DSSC performance for all the dyes tested.
Article
Chemistry, Applied
David Moe Almenningen, Henrik Erring Hansen, Martin Furru Vold, Audun Formo Buene, Vishwesh Venkatraman, Svein Sunde, Bard Helge Hoff, Odd Reidar Gautun
Summary: In this study, the effect of pi-spacers on dye performance in DSSCs was investigated by synthesizing five novel phenothiazine dyes with varying numbers of thiophenes in the pi-spacer. The light absorption properties of the dye were significantly improved when the number of thiophenes was two or more. However, incorporating larger oligothiophenes proved to be detrimental to DSSC performance, with the reference dye without a pi-spacer demonstrating the best overall performance.
Article
Nanoscience & Nanotechnology
Jung-Min Ji, Hyun Jae Lee, Haoran Zhou, Yu Kyung Eom, Chul Hoon Kim, Hwan Kyu Kim
Summary: This study develops three new D-ir-A-structured organic dyes with extended ir-conjugation, which can adjust the HOMO/LUMO levels and expand the light absorption range. These dyes have promising features such as enhanced charge transfer and good power conversion efficiency.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Masaaki Mitsui, Yushiro Nakagome, Yoshiki Niihori, Shota Inoue, Yutaka Fujiwara, Kenji Kobayashi
Summary: Two starburst-shaped organic chromophores were synthesized and applied to dye-sensitized solar cells. SB-08 showed better performance than SB-07, with a higher incident photon-to-current conversion efficiency and power conversion efficiency. This new architecture allows flexible modification of branches to enhance light-harvesting ability and electron transport pathways.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Applied
Hyung Jin Noh, Jung-Min Ji, Sang Pil Hwang, Chul Hoon Kim, Hwan Kyu Kim
Summary: Two new D-pi-A structured dyes (SGT-160 and SGT-161) were designed and synthesized to modulate LUMO energy levels and investigate photophysical, electrochemical properties, and cell performances. The insertion of an additional ethynyl moiety significantly enhanced light-harvesting capability, while pi-extension in the acceptor part stabilized LUMO energy levels. DSSCs based on SGT-160 exhibited high power conversion efficiencies of 10.28%, while DSSCs based on SGT-161 and SGT-130 showed moderate efficiencies of 8.05% and 10.06%, respectively.
Article
Chemistry, Physical
Tingxuan Wang, Xueliang Hao, Liang Han, Yujin Li, Qing Ye, Yanhong Cui
Summary: Three novel D-A-pi-A carbazole sensitizing dyes were synthesized with fluorenone as the auxiliary acceptor, benzene, furan and thiophene as pi bridge and cyanoacrylic acid as the anchoring acceptor, showing improved efficiency in photoelectric conversion. The introduction of different bridge groups affects the short-circuit current density and open-circuit voltage differently, with the dye containing a benzene bridge exhibiting the highest efficiency.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Physical
Bhanumathi Nagarajan, C. D. Athrey, Ramachandran Elumalai, Sudakar Chandran, Dhamodharan Raghavachari
Summary: The study focuses on the use of naphthalimide as an auxiliary acceptor in PTz-based dyes for DSSC applications. Two new organic dyes were synthesized with N-alkylated phenothiazine core and electron acceptor incorporation, showing optimal efficiency in DSSCs with iodide/triiodide electrolyte.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2021)
Article
Energy & Fuels
Karim Khanmohammadi Chenab, Mohammad Reza Zamani Meymian
Summary: Two novel D-pi-A framework dyes with different π-bridge structures were designed, synthesized and applied in dye-sensitized solar cells (DSSCs). The inclusion of one more aromatic ring in the π-bridge unit of dye molecules significantly changed the optical and electrochemical properties of the dyes, leading to different efficiencies in DSSCs.
Article
Chemistry, Multidisciplinary
Selvam Prabu, Thamodharan Viswanathan, Ezhumalai David, Sivanadanam Jagadeeswari, Nallasamy Palanisami
Summary: A new set of D-D'-p-p based dyes Fc-(OCH3-Ph)C=CH-CH=CN-R{R=COOH (1) and C6H4-COOH (2)} were synthesized and characterized for DSSC applications. The dyes showed stable thermal properties and efficient charge separation through intramolecular charge transfer. The addition of CDCA as a co-adsorbent improved the photovoltaic performance of the dyes, especially for dye 2 with additional p-linkers and acceptor unit.
Article
Chemistry, Physical
Bakhytzhan Baptayev, Se-Mi Kim, Bexultan Bolatbek, Sang Hee Lee, Mannix P. Balanay
Summary: The study demonstrated that the addition of an extra thiophene unit can extend conjugation, enhance light absorption, and increase the efficiency of dye-sensitized solar cells.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Kubra Sarikavak, Gulbin Kurtay, Fatma Sevin, Mustafa Gullu
Summary: The structural and photophysical properties of carbazole-based donor-pi-acceptor type dyes with divergent pi-spacers were investigated using density functional theory and time-dependent density functional theory methods. Various parameters such as bandgap energy, ionization potential, hardness, and light-harvesting efficiency were determined, providing insights into the properties of the dyes.
COMPUTATIONAL AND THEORETICAL CHEMISTRY
(2021)
Article
Optics
Mustafa M. Kadhim, Taleeb Zedan Taban, Sallal A. H. Abdullaha, Zainab Sabri Abbas, Safa K. Hachim, Ahmed Mahdi Rheima, Haider Abdulkareem Almashhadani, Abdol Ghaffar Ebadi
Summary: In this paper, a new series of organic chromophores based on triphenylamine (TPA) were developed by modifying the structure of the electron donor unit. Density functional theory (DFT) and time-dependent DFT (TD-DFT) were employed to study the photovoltaic, absorptional, energetic, and geometrical characteristics of these sensitizers. The results showed that AL-22 exhibited the most promising properties among the other dyes.
Article
Chemistry, Multidisciplinary
R. Anandha Krishnan, P. Pounraj, R. Govindaraj, Muthu Senthil Pandian, P. Ramasamy
Summary: Triphenylamine and methoxy substituted triphenylamine-based dyes were studied for their optical, spectroscopic, and electrochemical properties in dye-sensitized solar cell applications. The introduction of methoxy substitution enhanced the absorption ability, charge transfer, and electrochemical properties of the dyes. The results highlight the importance of the position of the pi-spacer subunit and methoxy substitution for designing efficient dyes for dye-sensitized solar cells.
RESEARCH ON CHEMICAL INTERMEDIATES
(2022)
Article
Chemistry, Physical
Maria Isabel Menendez, Nicolas Montenegro-Pohlhammer, Ricardo Pino-Rios, Rodrigo Urzua-Leiva, Simone Morales-Lovera, Merlys Borges-Martinez, Kevin Granados-Tavera, Ramon Lopez, Gloria Cardenas-Jiron
Summary: The photophysical, photovoltaic, and charge transport properties of fused core-modified expanded porphyrins were investigated using density functional theory and time-dependent density functional theory. The compounds showed absorption in the range of 700-970 nm for their Q bands and 500-645 nm for their Soret bands. The presence of thiophene rings in the macrocycle led to a bathochromic shift in the absorption wavelength, resulting in near-infrared absorptions. The charge transport study showed that pentaphyrin 1 and octaphyrin 4 were more conductive than hexaphyrin 2 or heptaphyrin 3.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Omar Britel, Asmae Fitri, Adil Touimi Benjelloun, Mohammed Benzakour, Mohammed Mcharfi
Summary: Novel organic dyes were designed to improve the efficiency of dye-sensitized solar cells by adding different pi-spacer groups to the reference dye. Theoretical investigations showed that the designed dyes exhibited improved photovoltaic performance and light-harvesting ability, making them suitable as sensitizers for enhancing DSSC devices.
RESEARCH ON CHEMICAL INTERMEDIATES
(2022)
Article
Chemistry, Multidisciplinary
Junjuan Shi, Yiming Li, Xin Jiang, Hao Yu, Jiaqi Li, Houyu Zhang, Daniel J. Trainer, Saw Wai Hla, Heng Wang, Ming Wang, Xiaopeng Li
Summary: The study focuses on the self-assembly of supramolecular systems based on two dissymmetrical double-layered ligands, investigating four isomeric structures with different binding modes using UHV-LT-STM technique. The distribution of isomers and total binding energy of each isomer were determined by STM measurement and DFT calculations, suggesting the most stable isomer with highest total binding energy. Control of the arrangement of dissymmetrical ligand LB within one binding mode was achieved by shortening the linker between inner and outer layers.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Polymer Science
Rui Wang, Houyu Zhang, Min Jiang, Zhipeng Wang, Guangyuan Zhou
Summary: A practical strategy was reported to synthesize fully biobased poly(ester-ether)s via industrial melt polycondensation, using Sc(OTf)(3) as a catalyst and bio-based 2,5-furandicarboxylic acid and ethylene glycol as substrates. The resulting poly(ester-ether)s had controlled oligoethylene glycol segments, with computational studies showing superior thermal and mechanical properties compared to conventional polyethers. This synthetic protocol demonstrates applicability and versatility in synthesizing functional materials from renewable sources.
Article
Chemistry, Multidisciplinary
Jianjun Ma, Ningxu Han, Hao Yu, Jiaqi Li, Junjuan Shi, Shaozhi Wang, Houyu Zhang, Ming Wang
Summary: In this study, a series of double- and triple-decker supramolecular complexes were successfully constructed, achieving dye aggregates with specific spatial arrangements. The results of this study are important for the construction of multi-stacks and the investigation of aggregation behavior of fluorescent chromophores.
Article
Chemistry, Multidisciplinary
Zhen Chen, Fei Zhao, Houyu Zhang, Qinqin Wang, Bin Dai
Summary: In this paper, a series of Zn-TfOH/AC catalysts were synthesized using a simple impregnation method, and the Zn-1.5TfOH/AC catalyst showed optimal catalytic performance in the acetylene hydration reaction. The TfOH ligands effectively inhibited carbon accumulation and Zinc loss, improved acidic sites and the dispersion of active metal. The hydration reaction mechanism of Zn-TfOH/AC catalyst was explored, and it was found that the OH- in TfO-ZnOH participated in the reaction and was regenerated by the dissociation of H2O, lowering the energy barrier.
CHINESE CHEMICAL LETTERS
(2023)
Article
Polymer Science
Rui-Xiang Yao, Jun-Juan Shi, Ke-Huan Li, Xin Liu, Hou-Yu Zhang, Ming Wang, Wen-Ke Zhang
Summary: This study systematically explores the chain structure and mechanical properties of metallo-supramolecular polymers using a loop protected architecture. The mechanical stability of individual chains was found to be dependent on the strength of the bonds, with values three times higher than those measured using old methods. The unique loop protected structure reduces interference from non-specific interactions. Additionally, the single chain flexibility of metallo-supramolecular polymers was found to be comparable to covalent analogues.
CHINESE JOURNAL OF POLYMER SCIENCE
(2022)
Article
Chemistry, Applied
Chongping Song, Jiaqi Li, Houyu Zhang
Summary: A class of bipolar host molecules with hole-transporting and electron-transporting groups connected to a TPSi core were designed and analyzed for blue phosphorescence. The calculated results showed that these designed molecules have potential as host materials for blue phosphorescence. The position of the N atom in pyridine and carboline plays a significant role in the molecular properties. This study provides insights into the structure-property relationship of TPSi-based host molecules and offers guidance for efficient bipolar host materials for blue phosphorescence.
Article
Green & Sustainable Science & Technology
Weiming Zhou, Yiting Wu, Hongqiang Huang, Mingxin Zhang, Xuhui Sun, Zequn Wang, Fei Zhao, Houyu Zhang, Tengfeng Xie, Meng An, Liwei Wang, Zhanhui Yuan
Summary: Designing nanoscale photocatalysts with good dispersion and multiple recycling is challenging but important for improving photocatalytic efficiency. In this study, a general bottom-up assembly method was proposed to design a type of two-dimensional lamellar membrane (2DLM) for photocatalytic applications. The designed bismuth oxychloride (BiOCl) membrane (BM) exhibited excellent physical properties and superior photocatalytic performance. The study also revealed the role of appropriately sized nanochannels in accelerating water transport and enhancing photocatalytic efficiency.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Chemistry, Applied
Guangjuan Liu, Jiaqi Li, Houyu Zhang, Yue Wang, Ming Zhang
Summary: In this study, the fluorescent exciplex compound F1 was used as a fluorescent film probe to identify organic amine vapors. The F1 film accurately identified aniline and N-methylphenethylamine vapors and distinguished between aliphatic and aromatic amine vapors based on different output signals.
Article
Chemistry, Applied
Wenyang Zhao, Zeyang Ding, Bao Li, Chunrong Chen, Houyu Zhang, Shimei Jiang
Summary: In this study, a series of salicylaldehyde Schiff base derivatives with different alkoxy chain lengths (NPA-n, n = 1, 4, 8, 12) were synthesized, which exhibited tunable emissions in both solution and solid states. The research provides a new strategy for constructing multi-color fluorophores for various applications.
Article
Chemistry, Physical
Kehuan Li, Hao Yu, Ningxu Han, Jiaqi Li, Tong Lu, Junjuan Shi, Houyu Zhang, Guanglu Wu, Ming Wang
Summary: The pursuit of good photophysical properties in organic optoelectronic materials necessitates an understanding and control of chromophore interactions, particularly in their aggregating form. This study presents a customizable molecular design using dissymmetrical ligands to precisely control chromophore interactions through the formation of metal-organic dimers. Anti-paralleled stacking of dissymmetrical ligands in these dimers allows for lateral shifting of chromophore stacking, with the spacing determined and adjusted by ligand dissymmetry. Three metal-organic dimers with varying chromophore spacing exhibited unique photophysical properties and displayed high-efficiency luminescence against quenching. This strategy offers a universally applicable approach to construct chromophore dimers with fixed cofacial spacing and determinate through-space interactions.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Inorganic & Nuclear
Yunting Zeng, Junjuan Shi, Zhixuan Wang, Xinrui Zhang, Jiaqi Li, Haifeng Su, Fang Fang, Houyu Zhang, Ming Wang
Summary: In this study, metallo-cages SA and SB were successfully constructed to inhibit fluorescence quenching and achieve highly efficient luminescent properties through coordination-driven self-assemblies. This work offers a new design strategy for preparing materials with excellent luminescent properties.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Junjuan Shi, Wei Xu, Hao Yu, Xing Wang, Feng Jin, Qingming Zhang, Houyu Zhang, Qiming Peng, Alim Abdurahman, Ming Wang
Summary: Luminescent metal-radicals have gained attention for their potential applications in materials science. However, the luminescence of metal-radicals tends to decrease after forming metallo-complexes. This study presents a highly luminescent metallo-supramolecular radical cage (LMRC) constructed from a tritopic terpyridinyl ligand RL with a TTM radical and Zn2+. LMRC shows a remarkable photoluminescence quantum yield and high photostability. Additionally, LMRC exhibits significant magnetoluminescence at high concentrations, indicating negligible spin-spin interactions between radical centers.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Jiaqi Li, Tian Tian, Dongxue Guo, Tingyu Li, Mingfan Zhang, Houyu Zhang
Summary: This study demonstrates the importance of the excited-state character of T-1 in the RISC process through theoretical analysis of a series of donor-acceptor spiro-based TADF molecules. Five types of spin-triplet states were achieved through fine tuning the D-A interactions and their effects on the RISC rate were determined. This work expands the understanding of the structure-property relationship of spiro-based TADF molecules.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Physical
Jiaqi Li, Tingyu Li, Mingfan Zhang, Dongxue Guo, Houyu Zhang
Summary: In this work, a rational design strategy for switching between HLCT and TADF emissions in structurally similar D-A molecules was reported. The switching of two types of emissions was achieved by modulating intramolecular charge transfer and twist between donor and acceptor units. This study provides an in-depth understanding of the excited-state properties of HLCT/TADF molecules and offers theoretical guidelines for the design and screening of highly efficient electroluminescent materials.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Jiaqi Li, Mingfan Zhang, Tingyu Li, Dongxue Guo, Tian Tian, Houyu Zhang
Summary: A molecular design strategy for switching between TADF and HLCT emissions has been proposed based on DFT calculations. By adjusting the electron acceptor units and electron-donating abilities of the donor fragments, both HLCT and TADF emissions can be achieved, utilizing hot and cold excitons through reverse intersystem crossing.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
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)