Article
Chemistry, Physical
Andre S. Laia, Glauco S. Maciel, Jose J. Rodrigues Jr., Marcos A. C. Dos Santos, Rogerio Machado, Noelio O. Dantas, Aniele C. A. Silvia, Rafael B. Rodrigues, Marcio A. R. C. Alencar
Summary: Lithium-boron-aluminum glasses doped with Eu3+ were prepared and heat treated to produce glass ceramics. X-ray diffraction measurements confirmed the formation of crystalline phases, and an increase in emission intensity was observed after the heat treatment. The luminescence analysis indicated the presence of Eu3+ in low-symmetry sites, and the intensity parameters remained unchanged after the heat treatment. The materials showed promising potential as optical temperature sensors with a high relative sensitivity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Zhenqi Yu, Xiaodong Li, Jing Wang, Su Zhang
Summary: This study involves the preparation and comprehensive analysis of Dy3+-doped Ca5(PO4)2SiO4 phosphors as non-contact optical temperature sensors. The phosphors exhibit a strong correlation between the luminescence intensity ratio of Dy3+ ions at 453 nm and 480 nm and temperature, indicating high sensitivity. The synthesized phosphor also shows excellent temperature repetitiveness, highlighting its potential as a ratiometric optical temperature sensor over a wide temperature range.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Materials Science, Ceramics
HaiLin Gong, XiuSha Peng, Ghulam Abbas Ashraf, FangFang Hu, RongFei Wei, Hai Guo
Summary: NaY2F7:Er3+,Yb3+ glass-ceramics with high transmittance were successfully prepared using a melt-quenching technique and subsequent thermal treatment. The improved crystallinity led to significantly higher up-conversion emission intensity compared to the precursor glass. The Er3+ ions showed excellent optical thermometry performance with high sensitivity and temperature resolution for self-calibration temperature measurement.
CERAMICS INTERNATIONAL
(2022)
Article
Optics
Yuqiang Li, Jian Yang, Mingwei Wang, Yaqi Zhu, Hancheng Zhu, Duanting Yan, Chunguang Liu, Changshan Xu, Yuxue Liu
Summary: This paper reports the synthesis of single-phase phosphors using a combustion method and their characterization under room temperature. The phosphors exhibited four sharp emission bands and the strongest upconversion emission intensity was achieved at specific x and y values. Wide-range optical temperature sensing was successfully realized with the optimal phosphors.
JOURNAL OF LUMINESCENCE
(2022)
Article
Materials Science, Ceramics
Xiangtao Lin, Haozhang Liang, Taoyong Liu, Ping Zhang, Xingxing Jiang, Yanjun Yu, Tianxiang Ning, Anxian Lu
Summary: In this paper, Nd2O3 doped Gd2O3-Ga2O3-GeO2 ternary glass was prepared and its structure and properties were characterized. The glass ceramics showed significant advantages in fluorescence performance and have great potential for applications.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Ceramics
Liting Qiu, Jiashan Mao, Zhangmei Zhao, Peng Wang, Muhammed Tahir Abbas, Xiantao Wei, Fengfeng Chi, Yonghu Chen, Min Yin
Summary: The transparent Ba2LaF7 glass ceramics doped with 20% Tb3+ exhibit good temperature sensitivity and repeatability in the temperature range of 300 K to 630 K, utilizing the TCELs of Tb3+ low-lying states F-7(5) and F-7(6).
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Thomas Brown, Andy P. Brown, David A. Hall, Thomas E. Hooper, Yizhe Li, Stuart Micklethwaite, Zabeada Aslam, Steven J. Milne
Summary: The study presents ceramics with high relative permittivity over a wide temperature range, designed for base metal electrode multilayer capacitor manufacturing processes. A potential Class II capacitor material free from Bi or Pb ions has been developed by doping Sr2NaNb5O15 with Ca2+, Y3+, and Zr4+ ions. The materials exhibit stable dielectric properties at high temperatures.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Physical
Junhao Xing, Limin Liu, Fei Shang, Guohua Chen
Summary: Transparent glass ceramics Sr-5(PO4)(3)F were successfully prepared from low-cost lead-free borate glasses, showing improved luminescence properties and potential application in optical temperature sensing.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Kailei Lu, Yucheng Ye, Wenhan Han, Cong Zhang, Lexing Liang, Haifeng Yuan, Yanli Shi, Jianqi Qi, Tiecheng Lu
Summary: In this study, a transparent ceramic material with light-shielding properties was successfully prepared by controlling the doping concentration and air-annealing temperature. It was found that by adjusting the content of defect clusters, the optical cutoff waveband of the ceramic material can be extended from UV to green light, providing a new approach for the development of lanthanide-doped transparent ceramics for light-shielding windows.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Physical
Ravina Swami, Ankur Shandilya, A. K. Shukla, P. Senthil Kumar, K. Sreenivas
Summary: Temperature sensing in the range (93-773 K) using luminescence intensity ratio method has been studied in rare earth ion modified La2-x-yErxYbyTi2O7 powders and ceramics. The optimised composition with (x = 0.025, y = 0.05) shows improved upconversion luminescence. The sintered ceramic is found useful for non-contact temperature sensing with a wider operating temperature range (243-1293 K) in comparison to calcined powders (163-863 K).
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Ceramics
Yingying Chen, Zhennan Wu, Xiaojuan Liang, Ding Nan, Wen Xu, Weidong Xiang
Summary: In this study, a series of CsPbCl2Br1 nanocrystal glasses with excellent optical properties were prepared, and Sm3+ was introduced to enhance the photoluminescence emissions, ultraviolet response, and device stability of silicon photodetectors (Si PDs). The UV response of Si PDs was significantly enhanced after integrating the Sm3+-doped CsPbCl2Br1 nanocrystal glass (PNG) with Si PDs, reaching a responsivity 7.5 times that of bare Si PDs at 320 nm. Moreover, a broadband response from ultraviolet to infrared was achieved by integrating 10% Sm3+-doped CsPbCl2Br1 PNG with InGaAs PDs. This study offers new perspectives for next-generation high-performance UV photodetectors.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Ch Nageswara Rao, P. Vasudeva Rao, R. Kameswari, R. Ramesh Raju, G. Chandana, K. Samatha, M. V. V. K. Srinivas Prasad, M. Venkateswarlu, A. Naveen, G. G. Dhar
Summary: The research investigates the structure and photoluminescence of Dy3+ doped transparent CdO-PbF2 phosphate glass/glass ceramics with SrO. After heat treatment, nanocrystals formed in the glass ceramics are spherical in shape and range in size from 10nm to 20nm. The luminescence intensities are significantly influenced by nanocrystallinity and display the same kinetics as efficient luminescent hosts.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Inorganic & Nuclear
Xiaomeng Yin, Hui Lin, Dawei Zhang, Ruijin Hong, Chunxian Tao, Zhaoxia Han, Shengming Zhou, Zhi-Jun Zhang, Guanhaoije Zheng
Summary: In this paper, BaAl2O4:Eu2+-Al2O3 ceramics were successfully prepared using spark plasma sintering, and their optical properties as well as temperature sensing capabilities were studied. The results show that the ceramic material has promising potential for non-contact temperature sensing applications, with absolute sensitivity exceeding 0.005 K-1 at certain temperature ranges.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Multidisciplinary
Manuel Alonso-Orts, Daniel Carrasco, Jose M. San Juan, Maria Luisa No, Alicia de Andres, Emilio Nogales, Bianchi Mendez
Summary: This study proposes a luminescent and interferometric thermometer based on Fabry-Perot optical microcavities built on Cr-doped Ga2O3 nanowires, utilizing the optical features of Cr3+-related luminescence and spatial confinement of light to achieve sensitive temperature sensing.
Article
Nanoscience & Nanotechnology
Hangtao Ye, Qin Wang, Ziyao He, Yao Tong, Wei Xia, Hongbin Fan, Weidong Xiang, Xiaojuan Liang
Summary: In recent years, silicon photodetectors have been widely used but have low response in the ultraviolet region. This study successfully fabricated perovskite nanocrystal glasses with high transmittance and improved detection performance in the UV region. By adjusting the concentration of CsPbCl2Br1 nanocrystals and introducing Tb3+ ions, energy transfer was achieved and the photoluminescence quantum yield was significantly boosted. Integrating the fabricated perovskite nanocrystal glasses with silicon photodetectors enhanced their UV response and maintained excellent photocurrent stability. These perovskite nanocrystal glasses are expected to be optimal semiconductor materials for next-generation high-performance UV photodetectors.
ACS APPLIED NANO MATERIALS
(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)