Article
Materials Science, Multidisciplinary
Nadia Tiabi, Romain Dauliat, Jean Louis Auguste, Sebastien Vergnole, Pierre Florian, Aurelien Canizares, Jean Rene Duclere, Katrin Wondraczek, Philippe Roy
Summary: A suspension method was used to synthesize Yb3+/Al3+/P5+ doped silica preforms, which showed high purity and homogeneous structure. The glass structure was analyzed using NMR and Raman spectroscopies, indicating the formation of Al(PO)4 units. Photoluminescence emission spectra revealed the beneficial effect of phosphorus addition in reducing the Yb2+ ion concentration in Yb/Al doped silica glass. This composition is promising for mitigating photodarkening in fiber lasers.
OPTICAL MATERIALS EXPRESS
(2023)
Article
Materials Science, Multidisciplinary
Yue Cheng, Qiubai Yang, Chunlei Yu, Mengting Guo, Yan Jiao, Ye Dai, Shikai Wang, Lili Hu
Summary: The study revealed that with the increase of temperature, the major absorption and emission peaks of Yb3+ doped glass samples become weaker and broader, while the absorption and emission cross sections decrease. Additionally, the absorption peak wavelength shifts towards blue and the absorption coefficient decreases.
OPTICAL MATERIALS EXPRESS
(2021)
Article
Chemistry, Physical
Katarzyna Halubek-Gluchowska, Damian Szymanski, Thi Ngoc Lam Tran, Maurizio Ferrari, Anna Lukowiak
Summary: Biocompatible nanoparticles with upconversion properties were prepared by the sol-gel method, using silica-calcia glass nanopowders doped with varying concentrations of Tm3+ and Yb3+ ions. The structure, morphology, and optical properties of these nanoparticles were characterized, including the observation of Tm3+ characteristic emission bands at different active ion concentrations. The energy transfer mechanism between Yb3+ and Tm3+ ions in the SiO2-CaO powders was studied through luminescence decay kinetics.
Article
Materials Science, Ceramics
Suyu Wang, Yongguang Liu, Dongchen Zhang, Weiquan Su, Ning Zhang, Zichang Liu, Zihang Wang, Luyun Yang
Summary: Phosphorus promotes energy transfer from Yb3+ ions to Er3+ ions, suppresses reverse energy transfer, and efficiently suppresses the ASE from Yb3+ ions. Under 976 nm laser excitation, the luminescence of Er3+ is extended and redshifted.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Mengting Guo, Shikai Wang, Tongyao Zhao, Chongyun Shao, Suya Feng, Chunlei Yu, Jinjun Ren, Lili Hu
Summary: The study explored the relationship among the thermal history, refractive index (RI), and structures of Yb3+/Al3+/P5+/F--co-doped silica glass, and revealed the intrinsic connection between these factors through advanced experimental techniques. Additionally, the influence of thermal history on the beam quality of Yb3+-doped large-mode-area photonic crystal fiber (LMA PCF) was investigated, with results indicating significant improvement in beam quality with proper thermal annealing. Overall, the findings offer valuable insights for the precise manipulation of the numerical aperture of Yb3+-doped active fiber.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Physical
Yue Cheng, Hehe Dong, Chunlei Yu, Qiubai Yang, Yan Jiao, Shikai Wang, Chongyun Shao, Lili Hu, Ye Dai
Summary: A high phosphorus Er3+/Yb3+ co-doped silica (EYPS) fiber core glass was prepared and its optical properties at different temperatures were studied. The results show that the 940 nm pump mechanism is favorable for achieving high-power 1.5 μm laser output. Additionally, the energy transfer efficiency from Yb3+ ions to Er3+ ions decreases significantly with increasing temperature.
Article
Materials Science, Ceramics
Zhencai Li, Dacheng Zhou, Lars R. Jensen, Jianbei Qiu, Yanfei Zhang, Yuanzheng Yue
Summary: A transparent Er3+-Yb3+-doped fluoro-aluminosilicate glass-ceramic was prepared, with BaYF5 nanocrystals uniformly distributed in the glass matrix. Heat treatment increased the crystallinity, doubled the intensity of up-conversion luminescence, and enhanced temperature-sensing capability.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Yiting Tao, Sasa Yan, Ying Du, Panting Wang, Danping Chen
Summary: The addition of Al3+ significantly increased the luminescent intensity of Eu2+-doped glass but decreased the energy transfer efficiency of Eu2+-> Tb3+. Al3+ dispersed Eu2+ and changed its surrounding environment, inhibiting energy transfer between Eu2+ and Tb3+ axes.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Yiting Tao, Xiben Ma, Jingang Wang, Ying Du, Panting Wang, Danping Chen
Summary: The photoluminescence and radioluminescence properties of Mn2+/Al3+-, Eu2+/Mn2+-, and Eu2+/Mn2+/Al3+-doped high silica glasses were investigated. It was found that Al3+ improves the luminous intensity of Mn(2+) and decreases the efficiency of Eu2+-> Mn2+ energy transfer. Additionally, Al3+ can broaden the excitation spectrum of Mn2+ and reduce the amount of nonbridging oxygens, resulting in improved radioluminescence intensity. The findings of this study have potential applications in laser and LED lights.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Fuxin Qi, Baoluo Zheng, Jing Yang, Jinming Liu, Biao Li, Xin Zhang, Qian Zhang, Yubin Hou, Pu Wang
Summary: A yttrium aluminosilicate fiber with Yb doping was fabricated using the powder-in-tube method, offering more flexibility in fiber composition design and bypassing crystal rod processing technology. The Yb-doped YAS fiber exhibited a high absorption coefficient at 976 nm and was used to construct a single-frequency fiber laser.
OPTICAL MATERIALS EXPRESS
(2022)
Article
Materials Science, Ceramics
Dongchen Zhang, Suyu Wang, Yongguang Liu, Weiquan Su, Ning Zhang, Zichang Liu, Zihang Wang, Luyun Yang, Jianrong Qiu
Summary: The efficient control of bismuth valence and NIR luminescence was achieved through the use of nano-porous silica glass, resulting in the production of novel NIR emission Bi-doped silicate glass. The inclusion of Al and P ions in NPSG influenced the formation of three types of bismuth active centers, enhancing O band and promoting up-conversion and S+C+L+U band NIR emission.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Jia Yu, Qi Jiang, Jiahang Li, Huidan Zeng, Tiesong Lin
Summary: In this study, Cu+-rich silicate glass was successfully prepared by introducing P2O5 as a modifying agent in the sol-gel method. It was found that a high content of P2O5 can generate more Cu+ ions in the gel forming stage, resulting in a Cu+-rich glass. However, the content of Cu+ ions decreases with excessive P2O5 additives in the glass. The highest Cu+ content was achieved in the glass with 7.5 mol% P2O5. This study provides a new approach for designing Cu+-rich glass using the sol-gel method.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Juping Ma, Yan Jiao, Chongyun Shao, Yan Sun, Fei Yu, Lili Hu
Summary: In this study, Tb3+/Al3+ co-doped and Al3+ single doped silica glasses were studied as the research objects to investigate the photodarkening mechanism using X-ray as a simulated light source. The optical properties of the glasses before and after X-ray irradiation and the results of electron paramagnetic resonance (EPR) revealed that the photodarkening effect is caused by the valence changes of Tb3+ ions and the energy transfer between Tb3+ ions and related defects. The study further revealed the relationship between the valence changes of Tb3+ ions and various defects in the glass matrix materials, deepening the understanding of the photodarkening mechanism in Tb3+ doped oxide glass. The findings provide theoretical support for the synthesis of Tb3+-doped oxide matrix glass fibers with excellent optical and anti-photodarkening performance.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Materials Science, Multidisciplinary
Xiaoxue Ma, Yukun Chen, Yi Liu, Xing Zhang, Shengwei Chi, Taiyu Jin, Haishuo Wu, Dawei Fang, Jun Wang
Summary: A study on a light-conversion glass doped with rare-earth ions was conducted to improve the light utilization and lifespan of silicon solar cells. Experimental results showed that this glass can increase the relative efficiency of silicon solar cells, demonstrating its important role in enhancing energy efficiency.
Article
Materials Science, Ceramics
Yin Zhang, Wei Zhu, Hao Xu, Yubo Wu, Yuhan Zou
Summary: 24ZnF2-(47-x)B2O3-18Bi2O3-10ZnO-xEr2O3-1Yb2O3 (FBZEY) fluorine bismuth borate glass with good thermal stability was prepared. The effect of doped rare earth ions on the glass structure was studied using infrared spectroscopy. High energy emission photons can be obtained by low energy excitation sources. Fluorescence decay analysis showed that the fluorescence lifetime increased with the concentration of doped rare earth ions.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Chemistry, Physical
Melvin John F. Empizo, Yuki Minami, Kohei Yamanoi, Toshihiko Shimizu, Masashi Yoshimura, Nobuhiko Sarukura, Takahiro Murata, Akihiro Yamaji, Akira Yoshikawa, Malgorzata Guzik, Yannick Guyot, Georges Boulon, Marilou Cadatal-Raduban
Summary: The absorption and emission properties of neodymium-doped APLF glasses were investigated, showing electric-dipole allowed 4f(2)5d broadband emissions with fast decay times, making them promising new VUV scintillator materials. Despite self-absorption limitations, the glasses exhibit potential for high-counting-rate fast neutron detection.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Optics
J. Pawlow, K. A. Prokop, M. Guzik, Y. Guyot, G. Boulon, J. Cybinska
Summary: The study focuses on the structural characterization and high-resolution spectroscopic properties of Nd3+-doped YPO4 and LuPO4 nano/micro-powders, revealing that the position of the Nd3+ ion in the lattice affects its luminescent behavior.
JOURNAL OF LUMINESCENCE
(2021)
Review
Chemistry, Physical
Weichang Li, Lili Hu, Wei Chen, Shiyu Sun, Malgorzata Guzik, Georges Boulon
Summary: In this study, LiYF4:20Yb(3+), 1Ho(3+) micro octahedrons were prepared by a modified hydrothermal method, and their temperature-dependent properties were systematically investigated. The results showed that the material exhibited high absolute and relative temperature sensitivity, indicating potential applications in ratiometric thermometers and temperature sensing devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
K. A. Prokop, M. Guzik, Y. Guyot, G. Boulon, M. Wilk-Kozubek, M. Sobczyk, A- Mudring, J. Cybinska
Summary: LuPO4 in the form of nano-powders shows potential applications in bio-imaging and luminescence thermometry. By investigating Nd3+-doped LuPO4 nanoparticles prepared with task-specific ionic liquid, it was possible to obtain well-crystallized single-phase phosphate nanomaterials. The synthesis conditions were found to influence the morphology, nanoparticle size, and spectroscopic properties of the materials.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2022)
Article
Physics, Condensed Matter
Georges Boulon, Yannick Guyot, Malgorzata Guzik, Guido Toci, Angela Pirri, Barbara Patrizi, Matteo Vannini, Akira Yoshikawa, Shunsuke Kurosawa, Akio Ikesue
Summary: This article focuses on the spectroscopic and laser properties of Yb3+ doped Lu2O3 transparent ceramics, an important laser material. It emphasizes the precautions needed when evaluating Yb3+ experimental data and discusses the position of certain energy levels and the magnetic dipole transitions. The article also examines the effects of self-trapping and self-quenching processes on decay time measurements and comments on the laser emission behavior near 1033nm.
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
(2022)
Article
Materials Science, Ceramics
Chongyun Shao, Chunlei Yu, Yan Jiao, Georges Boulon, Malgorzata Guzik, Lei Zhang, Fengguang Lou, Meng Wang, Weibiao Chen, Lili Hu
Summary: This review discusses the application of Yb3+-doped silica fiber (YDF) laser in space and the darkening effect caused by space ionizing radiation. It covers the space radiation environment, the nature and generation mechanism of color centers, and introduces five methods to inhibit the darkening effect.
INTERNATIONAL JOURNAL OF APPLIED GLASS SCIENCE
(2022)
Article
Optics
M. A. Butt, C. Tyszkiewicz, P. Karasinski, Magdalena Zieba, D. Hlushchenko, T. Baraniecki, A. Kazmierczak, R. Piramidowicz, M. Guzik, A. Bachmatiuk
Summary: This paper investigates an optical waveguide system based on silica-titania material, highlighting its low-cost, low loss, and easy development advantages. The study includes experimental characterization and numerical analysis, providing valuable insights for the realization of low-cost photonic integrated circuits.
Article
Materials Science, Ceramics
L. Duda, M. Czajkowski, P. Karasinski, C. Tyszkiewicz, M. Zieba, M. Guzik, A. Bachmatiuk
Summary: The fabrication process and characterization methods of waveguiding films for miniaturized photonic components were studied, and the influence of several key parameters on the film properties was investigated. The application of hybrid films for nanoimprint technique was reported for the first time.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Weichang Li, Lili Hu, Wei Chen, Shiyu Sun, Malgorzata Guzik, Georges Boulon
Summary: In this study, beta-NaYF4:Er3+ and beta-NaYF4:Er3+,Tm3+ microcrystals were synthesized using a hydrothermal method. The addition of Tm3+ ions inhibited green up-conversion emissions and enhanced red up-conversion emissions in beta-NaYF4:Er3+. The optimal concentrations of Er3+ and Tm3+ ions were determined to achieve the desired red fluorescence emission under near infrared excitation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Optics
Chongyun Shao, Chunlei Yu, Yiming Zhu, Qinling Zhou, Georges Boulon, Malgorzata Guzik, Weibiao Chen, Lili Hu
Summary: Yb3+-doped silica fiber (YDF) lasers have important application prospects in space, but they are susceptible to radiation-induced darkening due to the formation of color centers. This review discusses the nature, formation mechanism, and suppression methods of color centers in YDFs.
JOURNAL OF LUMINESCENCE
(2022)
Review
Chemistry, Physical
Muhammad A. Butt, Cuma Tyszkiewicz, Pawel Karasinski, Magdalena Zieba, Andrzej Kazmierczak, Maria Zdonczyk, Lukasz Duda, Malgorzata Guzik, Jacek Olszewski, Tadeusz Martynkien, Alicja Bachmatiuk, Ryszard Piramidowicz
Summary: This paper provides an overview of different techniques and recent advances in implementing optical waveguide thin films. It emphasizes the need for cost-effective methods for mass production of these films. The development of a silica-titania waveguide technology via the sol-gel dip-coating method is discussed, as well as the exploration of using nanoimprint lithography for patterning these films.
Article
Materials Science, Ceramics
B. Sawicki, E. Tomaszewicz, M. Guzik, T. Gron, M. Oboz, H. Duda, S. Pawlus, P. Urbanowicz
Summary: Ca1-3x-yMny[]xNd2x(MoO4) (1-3x)(WO4) (3x) molybdato-tungstates ([] denotes vacant sites) were synthesized successfully by high-temperature solid-state reaction and exhibited scheelite-type structure within the entire solid solution homogeneity range (x < 0.2000 and y = 0.0200). The morphology and particle size distribution of the materials were studied using SEM and laser diffraction methods. Spectroscopic measurements in the UV-vis range were conducted to determine optical properties, and the magnetic behavior was found to be paramagnetic with long-range ferrimagnetic and short-range antiferromagnetic interactions. The electrical conductivity and thermoelectric power factor of the new materials were strongly influenced by the Nd3+ ion content.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Yu Yue, Mingya Fu, Yuying Yang, Wei Chen, Lili Hu, Malgorzata Guzik, Georges Boulon
Summary: The effect of silica-alumina co-introduction on physical and spectroscopic properties of Nd3+-doped potassium phosphate glass was investigated. The Raman and X-ray photoelectron spectroscopy (XPS), physical parameters as well as spectroscopic characteristics were determined and analyzed in detail. The increase of more symmetrical bridge oxygen bonds and more ionic Si-O bonds lead to more centro-symmetric and stronger ionicity of Nd3+ ion coordination environment, which benefit the physical and spectroscopic properties of glasses. When SiO2/Al2O3 ratio was 1.8, the glass showed high emission cross-section, high optical gain parameter, and wider gain bandwidth parameter.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Materials Science, Multidisciplinary
M. Czajkowski, L. Duda, S. J. Czarnocki, A. B. Szukalska, M. Guzik, J. Mysliwiec, M. Skorenski, B. Potaniec, J. Cybinska
Summary: Research is being conducted to find organic dyes compatible with liquid crystals and with high photoluminescence quantum yield (QY) for use in LC systems. A highly efficient photoluminescent compound in the diketofurofuran (DFF) class of dyes was synthesized and compared with a diketopyrrolopyrrole (DPP) dye with LC properties. The QY of the DFF dye was found to strongly depend on the matrices in which it was dispersed, reaching a value greater than 95% in liquid and LC matrices, a first for the DFF class of dyes. The DFF dye showed significant and reversible changes in emission intensity and color upon melting/crystallization, and performed well as a thermofluorochromic indicator in comparison to commercial laser dyes.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
M. Wilk (Bieza), E. Tomaszewicz, M. Siczek, Y. Guyot, G. Boulon, M. Guzik
Summary: The structural and spectroscopic properties of a new optical material, La2MoWO9, were investigated. Micro-powder samples were obtained via solid-state reaction, and translucent micro-ceramics were demonstrated. Complementary techniques such as XRD, TEM/SEM, and high-resolution spectroscopic techniques were used for fundamental analysis, revealing the main features of this material.
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)