Article
Chemistry, Inorganic & Nuclear
Yue Wu, Xiao-Meng Zhen, Bo Zhang
Summary: This study reports a novel lead-free indium-based metal halide hybrid which exhibits enhanced luminescent performance and tunable emission wavelength through metal doping strategy. By fabricating a WLED device on a UV LED chip, stable white light emission has been achieved.
INORGANIC CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Peng Zhao, Honghao Yao, Shizhen Zhi, Xiaojing Ma, Zuoxu Wu, Yijie Liu, Xinyu Wang, Li Yin, Zongwei Zhang, Shuaihang Hou, Xiaodong Wang, Siliang Chen, Chen Chen, Xi Lin, Haoliang Liu, Xingjun Liu, Feng Cao, Qian Zhang, Jun Mao
Summary: Realizing high performance in both n-type and p-type materials is essential for designing efficient thermoelectric devices. However, the doping bottleneck is often encountered, i.e., only one type of conduction can be realized. In this work, the band structure of CdSb is calculated, revealing the potential of exceptional thermoelectric performance in n-type CdSb. Experimental results show successful realization of n-type conduction by tuning the stoichiometry of CdSb and further doping with indium. Future optimization of n-type CdSb should focus on identifying practical approaches to optimize the electron concentration.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Inorganic & Nuclear
Xinyu Shi, Zhilin Li, Mengyan Cao, Zhihui Rao, Xiujian Zhao, Xiao Gong
Summary: Lead-free perovskites have emerged as a viable alternative due to the toxicity and instability issues of lead halide perovskites. In this paper, we report a more efficient and facile process for preparing Rb2ZrCl(6):xSb(3+) perovskite phosphors using a wet grinding approach at room temperature. The prepared phosphors exhibit blue-white and orange fluorescence under UV lamp irradiation, with tunable emissions related to the excitation wavelength.
INORGANIC CHEMISTRY
(2022)
Article
Materials Science, Ceramics
Wanxin Zhuang, Huiwen Liu, Yang Chen, Wenzhe Xu, Hang Gao, Ye Tian, Dong Yao, Hao Zhang
Summary: Lead-free double perovskite nanocrystals with tunable self-trapped exciton emission in the blue region are synthesized through A, B-site codoping strategy. The introduction of Sb3+ into the B-site improves the emission efficiency, while altering the amount of A-site doped Rb+ allows for tunable emission peak from 447 to 528 nm. These Rb+, Sb3+-codoped Cs2NaInCl6 nanocrystals exhibit robust photoluminescence and phase stability against moisture, making them promising materials for illumination and display applications.
CERAMICS INTERNATIONAL
(2023)
Article
Energy & Fuels
Menglin Huang, Shuaicheng Lu, Kanghua Li, Yue Lu, Chao Chen, Jiang Tang, Shiyou Chen
Summary: The study demonstrates that lead doping can effectively enhance p-type conductivity in antimony selenide (Sb2Se3), achieving a high density of free hole carrier for the first time. A new p-type doping strategy is proposed based on theoretical analysis and experimental results, along with insights into defect densities related to device performance improvements.
Article
Chemistry, Multidisciplinary
Lun Jin, Danrui Ni, Xin Gui, Daniel B. Straus, Qiang Zhang, Robert J. Cava
Summary: The authors successfully doped Sr2GaSbO6, a magnetically silent double perovskite semiconductor, with magnetic trivalent cation Mn3+ to induce ferromagnetism and tune its bandgap. The new material, Sr2Ga1-xMnxSbO6 double perovskite, exhibits tunable ferromagnetic ordering temperature and bandgap, suggesting its potential application in next-generation oxide-based spintronic devices.
Article
Chemistry, Multidisciplinary
Hritwik Haldar, Cem. B. Yildiz, Moumita Majumdar
Summary: Bis(alpha-iminopyridine) L acts as a redox non-innocent Schiff-base ligand to coordinate with cationic antimony(III) and bismuth(III) centers. Mono- and di-cationic compounds have been synthesized and characterized using single crystal X-ray crystallography and solution-state NMR studies. The tri-cationic species of bismuth forms a heteroleptic compound coordinated by two types of Schiff-base donors.
Article
Chemistry, Inorganic & Nuclear
Zhen Jia, Pifu Gong, Mingxing Chen, Zhigang Wang, Xinhui Li, Yan Song, Shengnan Zhang, Ning Zhang, Mingjun Xia
Summary: The doping of Sb3+ ions in Rb3BiCl60.5H(2)O crystals leads to bright orange emission with high photoluminescence quantum yield. The Sb3+ doping optimizes the electronic energy band structure and improves the PL properties.
INORGANIC CHEMISTRY
(2023)
Article
Physics, Applied
Shikai Chen, Duanyang Wang, Qiang Zhang, Ming-Zi Wang, Hong-Jian Feng
Summary: This article presents evidence of domain wall (DW) conduction in 90℃ BaZr0.1Ti0.9O3 (BZT) through density functional theory (DFT) calculations, confirming the existence of DWs and electrical conductivity in BZT films. Furthermore, the design of BZT-based photovoltaic devices with polarization tunability and Zr ion-implanted BaTiO3 for high-efficiency perovskite solar cells are discussed, highlighting the potential for improved photovoltaic devices tuned by ferroelectric polarization.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Die Zhang, Qiang Wang, Ting Zheng, Liling Cao, Kang Min Ok, Daojiang Gao, Jian Bi, Ling Huang, Guohong Zou
Summary: In this study, three antimony(III) fluoride oxalates were successfully synthesized. These oxalates feature unique quasi-one-dimensional chain structures that induce large optical anisotropy. The results show that the optical anisotropy of these oxalates can be tuned through the synergetic interactions of templated cations and anionic functional groups.
SCIENCE CHINA-MATERIALS
(2022)
Article
Electrochemistry
Duanghatai Raknual, Supparat Charoenphon, Pakpoom Reunchan, Auttasit Tubtimtae
Summary: The study revealed that undoped and In3+-doped ZAO electrodes exhibit different performances in energy storage, with In3+ doping being able to enhance charge storage performance and reduce impedance at the interface.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Physical
Xuejiao Wu, Li Yang, Jidong Deng, Kun Wei, Guozheng Du, Yuhang Cui, Xiaoli Zhang, Jinbao Zhang
Summary: By employing a Sb doping strategy, significant improvements have been achieved in the quality of CsBi3I10 films, leading to higher light absorbance, fewer defects, and suppressed nonradiative recombination. The solar cells based on Sb-doped CBI films demonstrate a remarkable enhancement in power conversion efficiency and environmental stability.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Spectroscopy
Ya Chu, Yurong Guo, Guangjiu Zhao
Summary: This study demonstrates a doping strategy to enhance the optical properties of lead-free perovskite quantum dots without altering their favorable electronic structure, offering a valid strategy for improving their quality.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Chemistry, Physical
Caifeng Wang, Ki-Jae Jeong, Jeonghyo Kim, Seon Woo Kang, Jieun Kang, In Ho Han, Il-Woo Lee, Se-Joon Oh, Jaebeom Lee
Summary: In this study, Tb3+-doped luminescent nHAp probes known as Cit/Tb-nHAp were synthesized and characterized for their morphology, crystal phase, and luminescence properties. The color tunability was achieved by regulating the addition of Cit(3+). Biocompatibility study showed that <= 800 ppm Cit/Tb-nHAp was not cytotoxic for C6 glioma cells, and efficient cytoplasmic localization of transferrin conjugated Cit/Tb-nHAp into C6 glioma cells was demonstrated by fluorescence cell imaging, making it a promising agent for future in vitro and in vivo fluorescence bioimaging.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Engineering, Electrical & Electronic
Wenbin Feng, Mao Ye
Summary: A design method for a liquid crystal lens with adjustable positive-negative focal length and rectangular aperture is proposed. The designed electrodes create a parabolic profile of voltage difference over the lens aperture, enabling the realization of high-quality liquid crystal lens.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2022)
Article
Nanoscience & Nanotechnology
Cheng Chen, Tongtong Xuan, Yang Yang, Fan Huang, Tianliang Zhou, Le Wang, Rong-Jun Xie
Summary: This study proposes improving the optical properties of CsPbI3:Sr emissive layer (EML) in perovskite light-emitting diodes (PeLEDs) by inserting an additional potassium iodide (KI) passivation layer. The results demonstrate that the use of a KI layer can lead to high-performance PeLEDs with higher quantum efficiency and longer lifetime.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Mahdi Amachraa, Shuxing Li, Po-Yuan Huang, Ru-Shi Liu, Zhenbin Wang, Rong-Jun Xie, Shyue Ping Ong
Summary: This study elucidates the crystal structure of the LaSiO2N phosphor host and proposes a method to improve luminescent properties by eliminating Eu3+. A series of M1+xLa4-xSi3O13-x/2:Eu2+ (x approximately 1.5, M = Ca/Sr/Ba) phosphors with unprecedented ultra-broadband emission spectra and excellent thermal stability are developed. Detailed investigations reveal that the formation of oxygen vacancies affects the emission spectra through geometrical alteration of the Eu2+ local environment.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Physical
Feiyan Lin, Xinya Li, Changjian Chen, Xin Pan, Dengfeng Peng, Hongde Luo, Libo Jin, Yixi Zhuang, Rong-Jun Xie
Summary: Mechanoluminescent (ML) materials have broad application prospects, but existing materials cannot meet the requirements of different stress sensing applications. This study reports novel ML materials with excellent self-recoverable ML performance and proposes a polyhedron distortion model to explain the mechanoluminescence mechanism.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Physical
Jindong Chen, Xiaotian Jiang, Qingchen Wu, Zheshuai Lin, Min Luo, Ning Ye
Summary: This review summarizes the achievements in infrared nonlinear optical (IR NLO) pnictide crystals, including their crystal structures, key NLO indexes, and the structure-property correlations. The existing issues and prospective development of NLO pnictides are also discussed.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Wenhao Liu, Xiaomeng Liu, Xianghe Meng, Chunxiao Li, Mengran Sun, Zheshuai Lin, Jiyong Yao
Summary: The spontaneous crystallization method was used to synthesize two non-centrosymmetric scandium borate crystal materials with wide band gaps and good second harmonic generation (SHG) effects. First-principles calculations revealed that the arrangement of [B5O10](5-) groups and the distortion of ScO6 polyhedra were responsible for the SHG response. The materials may have potential applications in UV nonlinear optical devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Zhicong Sun, Tianliang Zhou, Ronghui Liu, Xueyuan Tang, Rong-Jun Xie
Summary: In this work, ultra-broadband NIR phosphors are realized by doping Cr3+ in self-emitting SrHfO3. By observing dual emission bands centered at 770 (host) and 1000 nm (Cr3+), a wide spectral range of 700-1400 nm is achieved. The introduction of Cr3+ ions into the HfO6 octahedron produces an NIR emission with a full width at half maximum of 190 nm and an internal quantum efficiency of 24% under 460 nm excitation. A prototype NIR-pc-LED surface light for machine vision is demonstrated using the combination of blue LED with SrHfO3:Cr. This work paves the way for designing super-broadband NIR phosphors by doping Cr3+ or other ions into hosts with self-trapped exciton emission (e.g., halide perovskites).
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Ziqiu Cheng, Yanbin Wang, Wanyuan Li, Qiang Liu, Taoli Deng, Xin Liu, Shuxing Li, Guohong Zhou, Rong-Jun Xie, Jiang Li
Summary: To meet the increasing demand for high-power laser diode lighting and displays, phosphor converters with high-brightness and high-directionality are needed. Porosity optimization and pore size regulation were explored in this study. Ce:YAG ceramics with different porosities and pore sizes were prepared, and their microstructure, light confinement ability, and optical properties were studied. The results showed that a ceramic phosphor with a porosity of 10 vol.% and a pore size of 3 μm exhibited good spot confinement ability and high luminous flux value, while the 10 vol.% Ce:YAG ceramic phosphor with a pore size of 5 μm had the highest emission intensity and maximum luminous efficacy. Porous Ce:YAG ceramics are expected to be a promising candidate for high-brightness laser lighting and projection applications.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Nanoscience & Nanotechnology
Haorui Dong, Haiyan Zhao, Tongtong Xuan, Wenhao Bai, Tianyu Lin, Yixin Cai, Rong-Jun Xie
Summary: Lead halide perovskite nanocrystals with a perovskite/linear low-density polyethylene (perovskite/LLDPE) core/shell structure were successfully synthesized to achieve high photoluminescence quantum yield (PLQY) and high stability. The improved photoluminescence properties were attributed to the enhanced pressure effect and interaction between ligand and perovskite crystals. The resulting nanocrystals showed high stability under ambient conditions and against UV light, and were used to fabricate white-emitting Mini-LEDs with a super wide color gamut.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Wenhao Bai, Tongtong Xuan, Haiyan Zhao, Haorui Dong, Xinru Cheng, Le Wang, Rong-Jun Xie
Summary: Ultra-high-efficiency green perovskite light-emitting diodes (PeLEDs) are achieved by regulating charge carrier transport and near-field light distribution to reduce electron leakage and enhance light outcoupling efficiency, resulting in quantum efficiencies surpassing 30%. This is accomplished by using Ni0.9Mg0.1Ox films with high refractive index and increased hole carrier mobility as the hole injection layer, and inserting a polyethylene glycol layer between the hole transport layer and the perovskite emissive layer to block electron leakage and reduce photon loss. This study provides an interesting idea for constructing super high-efficiency PeLEDs by balancing electron-hole recombination and enhancing light outcoupling.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Chenjie Zhang, Lin Huang, Jinyi Wang, Tianliang Zhou, Rong-Jun Xie
Summary: In this work, a method is proposed to find hosts that produce broadband NIR Cr3+ emission by screening Ce3+-doped phosphor hosts, allowing Ce3+ and Cr3+ to occupy the same crystallographic site. A NIR phosphor Ba3Sc4O9:Cr3+ is obtained with an emission peak at 835 nm and a FWHM of 188 nm, where Ce3+ or Cr3+ is accommodated at the same Sc3+ site. By following this method, two broadband NIR phosphors Li3Sc2(PO4)3:Cr3+ (lambda(em) = 1000 nm, FWHM = 223 nm) and Na3Sc2(PO4)3:Cr3+ (lambda(em) = 895 nm, FWHM = 184 nm) are discovered.
CHEMISTRY OF MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Zhongyuan Li, Bin Li, Wuqi Liu, Dong Yan, Qiang Tang, Zhen Fang, Rong-Jun Xie
Summary: In this study, an Mn2+-doped two-dimensional (2D) layered HDP material PPA(4)NaInCl(8) was reported, which showed promising photoluminescence properties with efficient red emission. The energy transfer process between the inserted organic cations PPA(+) and Mn2+ was investigated, resulting in tunable emission with varying Mn2+ concentration. These findings provide important insights into doping and doped 2D layered HDPs.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Yifan Song, Jiaren Du, Rujun Yang, Cunjian Lin, Wenjing Chen, Zishuang Wu, Hengwei Lin, Xi Chen, Yixi Zhuang, Rong-Jun Xie
Summary: Time-temperature indicator (TTI) technologies provide nondestructive and real-time quality management for perishable products, ensuring product safety. However, current TTI technologies have limitations in recyclability, sensitivity, and environmental tolerance. This study proposes a new TTI route based on the light storage effect in persistent luminescent (PersL) materials, showing excellent recyclability, reliability, and environmental stability. It highlights the potential of PersL phosphors in advanced TTI applications and next-generation biological detection technology.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Wenhao Bai, Mingming Liang, Tongtong Xuan, Ting Gong, Liang Bian, Huili Li, Rong-Jun Xie
Summary: By using L-glutathione reduced (GSH) as surface ligands, high-quality phenethylammonium tin iodide (PEA2SnI4) perovskite films were successfully constructed, leading to efficient pure red light-emitting diodes. This ligand engineering strategy effectively reduces the crystallization rate and suppresses the oxidation of Sn2+ ions, improving the film morphology and optical properties. The study demonstrates the feasibility of ligand engineering in enhancing the electroluminescence performance of Sn-based perovskite light-emitting diodes (PeLEDs).
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Optics
Taoli Deng, Dilare Halmurat, Zetao Shen, Tianyu Yan, Shuxing Li, Le Wang, Rong-Jun Xie
Summary: Promising pixelated phosphor films are fabricated by producing arrayed holes in the Ag substrate with the laser direct writing technology and then filling the holes with the mixture of phosphor particles and the heat-resisting inorganic glue. The films exhibit high thermal conductivity and can withstand a high luminance saturation threshold pumped by blue laser diodes, resulting in high brightness and uniformity. Based on this fabrication strategy, full-color pixelated phosphor films are successfully prepared for the first time, showing interesting applications in intelligent adaptive lighting.
LASER & PHOTONICS REVIEWS
(2023)
Article
Chemistry, Multidisciplinary
Shuxing Li, Linhui Huang, Yunqin Guo, Le Wang, Rong-Jun Xie
Summary: This study presents a laser-driven white light source with high brightness and excellent color rendition, achieved by designing CaAlSiN3:Eu@Al (CASN@Al) converters that tightly bond all-inorganic phosphor films on an aluminum substrate. A layer-by-layer phosphor converter (LuAG/CASN@Al) is constructed to enhance light conversion efficiency and reduce reabsorption loss, resulting in a white light source with a luminous efficacy of 258 lm W-1 and a color rendering index of 91. A miniaturized endoscopy utilizing the laser-driven white light demonstrates twice the coupling efficiency of commercial white LEDs, providing more vivid images and long-term reliability.
MATERIALS HORIZONS
(2023)
