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
Nanoscience & Nanotechnology
Qi Wang, Ke Li, Haohan Yang, Donghai Lin, Wan Y. Shih, Wei-Heng Shih
Summary: This paper successfully prepared perovskite films with good stability and fluorescence performance using electrospinning technique, providing a new solution for the application of optoelectronic devices.
Article
Multidisciplinary Sciences
Dexin Yang, Guoling Zhang, Runchen Lai, Yao Cheng, Yaxiao Lian, Min Rao, Dexuan Huo, Dongchen Lan, Baodan Zhao, Dawei Di
Summary: The research demonstrates highly luminescent germanium-lead (Ge-Pb) perovskite films with considerably improved photoluminescence quantum efficiencies compared to other lead-based perovskite films, offering a new solution for developing eco-friendly light-emitting technologies based on perovskite semiconductors.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Dianxing Ju, Ming Zhou, Zhichao Liu, Peng Ran, Zhiwen Dong, Shuo Hou, Hao Li, Wenge Xiao, Xuhui Xu, Huifang Li, Yang (Michael) Yang, Tingming Jiang
Summary: This study reports a novel zero-dimensional organic metal halide crystal with two luminescent centers, exhibiting excitation-selective property and intense emissions. The crystal can be used as a phosphor in white light-emitting diodes and shows promising performance as an X-ray scintillator.
Article
Chemistry, Physical
Renjie Chen, Yan Xu, Song Wang, Chao Xia, Yunpeng Liu, Bingjie Yu, Tongtong Xuan, Huili Li
Summary: Doping zinc ions into CsPbBr3 NCs can enhance photoluminescence properties and stability, improving the optical properties of the material. A white light-emitting diode (WLED) with high luminous efficiency and wide color gamut was fabricated using green-emitting CsPbBr3:Zn2+ doped NCs and red-emitting K2SiF6:Mn6+ phosphors.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Optics
Qionghua Mo, Jiabing Yu, Chen Chen, Wensi Cai, Shuangyi Zhao, HaiYun Li, Zhigang Zang
Summary: A new air-stable hybrid lead-free metal halide with a 0D structure was synthesized, showing high photoluminescence quantum yield and ultra-broadband yellow emission. Warm white light-emitting diodes were proposed by combining with blue LED chips, and were used for visible light communication with high data transmission rate.
LASER & PHOTONICS REVIEWS
(2022)
Article
Nanoscience & Nanotechnology
Xiaohua Cheng, Ying Han, Teng Cheng, Yipeng Xie, Xuerui Chang, Yufan Lin, Longyun Lv, Juan Li, Jun Yin, Bin-Bin Cui
Summary: Low-dimensional organic-inorganic metal halides (LOMHs) have gained significant attention for their tunable crystal structures and excellent photoelectric properties. This study systematically investigates the spatial and hydrogen bonding effects of organic cations on the structure and properties of LOMHs. Three LOMHs were synthesized and their blue-white emissions were attributed to free excitons (FEs) and self-trapped excitons (STEs). An ultraviolet-pumped light-emitting diode (LED) based on one LOMH showed high color rendering index (CRI) and correlated color temperature (CCT), demonstrating its potential in solid-state lighting.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Tingming Jiang, Wenbo Ma, Hao Zhang, Yue Tian, Gang Lin, Wenge Xiao, Xue Yu, Jianbei Qiu, Xuhui Xu, Yang (Michael) Yang, Dianxing Ju
Summary: Environmentally friendly metal halides, such as tetramethylammonium manganese chloride and tetraethylammonium bromide, have been synthesized and shown to have high photoluminescence quantum yields and good environmental stability. When blended in white light-emitting diodes, they display outstanding luminous efficacy. Under X-ray excitation, these materials demonstrate steady-state X-ray light yields and radiation hardness.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Samrat Das Adhikari, Carlos Echeverria-Arrondo, Rafael S. Sanchez, Vladimir S. Chirvony, Juan P. Martinez-Pastor, Said Agouram, Vicente Munoz-Sanjose, Ivan Mora-Sero
Summary: By doping Cs2SnCl6 nanocrystals with different metal ions, we have successfully synthesized nanocrystals that emit blue, yellow, red, and white light. These nanocrystals have high photoluminescence efficiency, excellent stability, and can emit pure white light under different excitation wavelengths.
Article
Chemistry, Physical
Kai Li, Ying Ye, Wenchao Zhang, Yao Zhou, Yudong Zhang, Shisheng Lin, Hang Lin, Jian Ruan, Chao Liu
Summary: This study reports the precipitation of lead-free Mn:Cs2ZnX4 nanocrystals in glasses, which exhibit efficient green and red photoluminescence. The coordination environment of Mn2+ ions can be tuned by adjusting the size and halide component of the nanocrystals, resulting in tunable photoluminescence with improved quantum efficiency. The in-situ precipitation of these nanocrystals in glasses significantly enhances their thermal, chemical, and photo-stabilities, making them promising for light-emitting diodes with stable chromaticity coordinates.
Article
Optics
Shuangyi Zhao, Qionghua Mo, Wensi Cai, Huaxin Wang, Zhigang Zang
Summary: Lead-free cesium copper chloride nanocrystals with unique optical properties were synthesized, showing promise for applications in solid-state lighting.
PHOTONICS RESEARCH
(2021)
Article
Chemistry, Physical
Yu Zhang, Guishun Li, Changkun She, Shaohua Liu, Fangyu Yue, Chengbin Jing, Ya Cheng, Junhao Chu
Summary: A stable CsPbBr3 nanocrystals were successfully synthesized by introducing a double-terminal ligand to replace the conventional one, showing high photoluminescence quantum yield and improved stability, which has great potential for future applications.
Article
Chemistry, Multidisciplinary
Ludan Niu, Lili Zhao, Deyu Li, Qian Chen, Mingming Zhang, Jing Luan, Lei Wang, Weigao Xu, Jun Xing
Summary: A steric hindrance regulation strategy was developed to predictably synthesize broadband white-light-emitting (BWLE) perovskites. By introducing molecules with large steric hindrance, a material library consisting of 40 kinds of BWLE compounds was successfully fabricated. This provides an important material platform for optoelectronic applications.
SCIENCE CHINA-CHEMISTRY
(2023)
Review
Chemistry, Physical
Guangruixing Zou, Ziming Chen, Zhenchao Li, Hin-Lap Yip
Summary: Metal halide perovskites are promising candidates for lighting applications due to their excellent optoelectronic properties. However, blue perovskite LEDs still lag behind green and red counterparts in terms of efficiency and stability. Strategies such as composition engineering, dimensional engineering, and the use of perovskite nanocrystals and quantum dots are being explored to improve blue perovskite LED performance.
ACTA PHYSICO-CHIMICA SINICA
(2021)
Article
Chemistry, Physical
Kanhu Charan Behera, Mangalampalli Ravikanth
Summary: A new compound, bis(3-pyrrolyl BODIPY), was synthesized and its catalytic potential was studied by adjusting the optical properties. The compound exhibited white light emission under acidic conditions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Hui Peng, Ye Tian, Xinxin Wang, Tiantian Dong, Zongmian Yu, Yonghao Xiao, Zhenheng Zhang, Jianping Wang, Bingsuo Zou
Summary: Recently, low-dimensional metal halides (LDMHs) have been receiving extensive attention due to their fascinating optoelectronic properties. In this study, an organic-inorganic hybrid Cu(I)-based metal halide of (TPA)CuCl2 (TPA+= tetrapropylammonium cation) with a zero-dimensional block structure was reported. The synthesized compound exhibited a broad green emission with a high photoluminescence (PL) quantum efficiency and a large Stokes shift, attributed to the self-trapped exciton (STE) transition. Raman spectra at different temperatures revealed a strong anharmonic electron-phonon coupling in (TPA)CuCl2, providing evidence for the formation of STEs. Additionally, the temperature-dependent PL spectra and the involvement of TPA+ demonstrated that the formation of STEs was related not only to the low-frequency phonons of [CuCl2]-clusters but also to the mid-infrared vibrations of organic molecules, contributing to a better understanding of the emission mechanism of LDMHs.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Ye Tian, Qilin Wei, Hui Peng, Zongmian Yu, Shangfei Yao, Bao Ke, Qiuyan Li, Bingsuo Zou
Summary: This study reported a new organic metal halide single crystal with blue emission. The material possesses a unique structure and excellent optical properties. Spectral analysis revealed that the blue emission in this material originates from the combination of free excitons and self-trapped excitons. Additionally, the relatively small Stokes shift is attributed to the slight structure distortion of [PbBr4]2- clusters in the excited state confined by TPA molecules.
Article
Materials Science, Multidisciplinary
Tao Huang, Qilin Wei, Wenchao Lin, Hui Peng, Shangfei Yao, Bingsuo Zou
Summary: In this paper, a new zero-dimensional organic-inorganic hybrid manganese bromide single crystal with high efficiency yellow-green emission has been synthesized. The relationship between the emission wavelength and relaxation process under CW laser excitation was investigated. The results showed different emission colors under continuous-wave laser excitation of different wavelengths. The study also discussed the photophysical properties of multiple emission bands and the microscopic interactions of the spin, carrier, and phonon inside the lattice.
MATERIALS TODAY PHYSICS
(2022)
Article
Nanoscience & Nanotechnology
Hui Peng, Xuefei He, Qilin Wei, Ye Tian, Wenchao Lin, Shangfei Yao, Bingsuo Zou
Summary: This study proposes a rational crystal structure regulation strategy in zero-dimensional (0D) Sb(III)-based metal halides to achieve efficient emission. By precisely controlling the ratio of raw materials, two compounds with different coordination configurations were obtained, and theoretical calculations revealed the impact of crystal structure on photoluminescence.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Environmental
Ye Tian, Hui Peng, Qilin Wei, Yanxi Chen, Jingjing Xia, Wenchao Lin, Chengyu Peng, Xuefei He, Bingsuo Zou
Summary: With the advancement of social development and technology, there is an increasing demand for high-security photoluminescence (PL) anti-counterfeiting and information encryption materials. In this study, two organic cuprous bromide hybrids, (TPA)CuBr2 and (TPA)2Cu4Br6, were synthesized with variable coordination geometries using a simple solution method. (TPA)CuBr2 exhibited bright cyan emission with a PLQE of 81% under 254 nm excitation, while (TPA)2Cu4Br6 showed orange emission with a PLQE of 95% upon 365 nm irradiation. Interestingly, a reversible structural conversion and emission color change between cyan and orange could be triggered by water or heat under their respective excitation. The compounds' emission mechanism was investigated and found to stem from self-trapped excitons emission. The ability to switch emission colors under external stimuli enables the construction of various anti-counterfeiting and information encryption scenarios. Furthermore, a rewritable PL paper based on (TPA)CuBr2 with water as ink was achieved. These compounds not only provide a way to modulate efficient emission in zero-dimensional Cu(I)-based metal halides but also demonstrate the potential for multi-functional applications in organic-inorganic hybrid metal halides.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Xuefei He, Hui Peng, Qilin Wei, Yarui Dai, Jingjing Xia, Hualin Zhao, Shichao Zhou, Bingsuo Zou
Summary: In recent years, low-dimensional lead-free metal halides have gained significant interest due to their unique optical properties, low toxicity, and excellent environmental stability. This study presents a novel multimode photoluminescent material, Cu+(a Sb3+-codoped Cs2ZnCl4 microcrystals, synthesized through a simple solution method. The material exhibits efficient and tunable emission bands under UV excitation, making it suitable for applications in fluorescence anticounterfeiting and information encryption-decryption.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Physical
Zongmian Yu, Qilin Wei, Wenchao Lin, Minghui Lu, Tongzhou Li, Hui Peng, Xianci Zhong, Tao Liu, Bingsuo Zou
Summary: In recent years, there has been growing interest in two-dimensional perovskite materials due to their exceptional photoelectric properties. This study successfully synthesized Sb3+-doped 2D cadmium-based organic amine hybrid perovskites and observed a red-shift in the absorption edge and broad-band orange-yellow emission bands. The heterovalent substitution and high electron-phonon coupling coefficients played significant roles in promoting self-trapped exciton formation and related emission.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
Shuaigang Ge, Hui Peng, Qilin Wei, Xiaodong Shen, Weiguo Huang, Weizheng Liang, Jialong Zhao, BingSuo Zou
Summary: A Sb3+-doped CsCdCl3 metal halide was synthesized via hydrothermal reaction, exhibiting double emission bands with a PLQY of 59.6% due to self-trapped exciton emission. The Sb3+-doped CsCdCl3 showed bright afterglow emission that lasted up to 5000 s after excitation, with the color and duration of the afterglow emission tunable by regulating the doping concentration of Sb3+. Optical anti-counterfeiting and information encryption were achieved based on the synthesized compounds. These findings not only enhance our understanding of the tunable afterglow emission mechanism in all-inorganic metal halides, but also provide a new strategy for designing novel ultralong afterglow luminescent materials.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Weiguo Huang, Hui Peng, Qilin Wei, Jingjing Xia, Xuefei He, Bao Ke, Ye Tian, BingSuo Zou
Summary: Sb3+/Ho3+ co-doped Cs2KInCl6 double perovskites are proposed to achieve efficient and tunable white light emission. The Sb3+ ions act as sensitizer to activate Ho3+ emission, resulting in two distinct emission bands. By adjusting the Ho3+ concentration, the luminous color can be modulated and white emission can be obtained. White-light emitting diodes and anti-counterfeiting labels based on this material were successfully fabricated.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Xiaoyan Lu, Hui Peng, Qilin Wei, Wenchao Lin, Ye Tian, Tongzhou Li, Shichao Zhou, Jialong Zhao, Bingsuo Zou
Summary: Forgery and leakage of confidential information will result in significant social harm and economic losses, emphasizing the need for simple and effective strategies to ensure information security. Two different zero-dimensional organic antimony chlorides were obtained through different chemical synthesis methods, exhibiting efficient emission under photoexcitation. The dynamic transformation processes between these compounds were observed under different external stimuli, and multiple anti-counterfeiting and information encryption models were developed based on their reversible photoluminescence switching.
MATERIALS TODAY PHYSICS
(2023)
Article
Engineering, Electrical & Electronic
Tao Huang, Qilin Wei, Tongzhou Li, Hui Peng, Bingsuo Zou
Summary: In this study, a series of Sb3+-doped one-dimensional (TDMP)CdCl4 powder crystals were prepared, and it was found that the 1D quantum confinement effect and Jahn-Teller distortion in this organic-inorganic hybrid generate strong electron-phonon coupling. Additionally, a fast energy transfer process between the host and the dopant was observed. The synergy of these factors enables efficient broadband yellow emission with high photoluminescence quantum yield.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Shuya Jin, Qilin Wei, Hui Peng, Bao Ke, Wenchao Lin, Bin He, Xianci Zhong, Bingsuo Zou
Summary: Organic-inorganic hybrid metal halides are promising candidates for SSL and display technology due to their unique photophysical properties, easy synthesis, and low costs. Among them, In(iii)-based metal halides have broadband emission, low toxicity, and remarkable stability. In this study, we developed a new lead-free metal halide, (DPG)(3)InBr6, with a photoluminescence quantum yield of 30.4%. By doping with Sb, the resulting (DPG)(3)InBr6 showed a broad emission with a high PLQY of 99.2%, a large Stokes shift of 232 nm, and a high Huang-Rhys factor of 45.5, making it ideal for use in photonic devices. A high-performance WLED with a CRI of 86.9 and a luminous efficacy of 30.9 lm W-1 was demonstrated using Sb-doped (DPG)(3)InBr6.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Wenchao Lin, Qilin Wei, Tao Huang, Xianfu Meng, Ye Tian, Hui Peng, Bingsuo Zou
Summary: In this study, zero-dimensional antimony-doped tin(iv)-based hybrid metal halides were synthesized with wavelength-dependent tunable emission. The (C13H30N)(2)SnCl6:20% Sb compound exhibited strong white and red emission under different excitation wavelengths, and showed excellent color rendering index in single-component white light-emitting diodes. This material has potential applications in the fields of anti-counterfeiting, information encryption, and flexible lighting displays.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
Bao Ke, Hui Peng, Qilin Wei, Chengzhi Yang, Xueping Li, Weiguo Huang, Zhentao Du, Jialong Zhao, Bingsuo Zou
Summary: Recently, 0D metal halides have attracted attention due to their diverse structures and luminescence properties. However, the controllable synthesis of metal halide clusters with ideal configuration remains challenging, and the relationship between coordination configuration and optical properties is not well understood. In this study, two Sb3+-doped 0D Sn (IV)-based metal halides were synthesized with different coordination configurations by inserting tetrabutylphosphonium chloride (TBPCl) into a SnCl4 lattice, resulting in different optical properties. The compounds showed different optical properties, possibly due to the large lattice distortion and non-radiative relaxation caused by DMF. Sb3+-doped (TBP)(2)SnCl6 exhibited remarkable stability in water and was used for white-light-emitting diodes (WLED).
ADVANCED OPTICAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Ye Tian, Shangfei Yao, Wenchao Lin, Hui Peng, Yongyou Zhang, Bingsuo Zou
Summary: Polarization anisotropy of emission carries effective information that cannot be obtained from other optical properties. Manipulating polarization emission at room temperature is essential for spintronic applications. In this work, we demonstrate the relationship between cross-section radius and polarization ratio, and achieve a maximum polarization ratio of 60% in a Sn-doped CdS microcone. Time-resolved PL spectra provide insights into radiative contributions to the observed polarization emission. Additionally, the blue-shift of the emission peak with decreasing cross-section radius indicates the role of quantum confinement effect in polarization anisotropy emission.
MATERIALS ADVANCES
(2022)
