Article
Engineering, Electrical & Electronic
Renping Cao, Na Liu, Qinghu Zhong, Yafang Tu, Yongchun Xu, Haining Zhang, Wei Luo, Ting Chen
Summary: In this study, Ca3MgSi2O8:Bi3+ and Ca3MgSi2O8:Eu3+ phosphors with different doping concentrations were prepared via the high-temperature solid-state reaction method, and their crystal structure and luminescence properties were investigated. The results show the luminous performance improvement of Ca3MgSi2O8:Eu3+ phosphor through Bi3+ co-doping.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Ceramics
Jiangcong Zhou, Yiqing Lai, Dewu Wu, Mengting Chen, Bo Wang, Zhiwei Tang, Long Lin, Mengyin Chen, Jianyan Ding, Quansheng Wu
Summary: Bismuth ions are utilized as non-rare-earth activators for luminescent materials, showing intense n-UV absorption and cyan emission in the synthesized NaGd9(SiO4)6O2: xBi3+ phosphors. The optimal doping concentration of Bi3+ is found to be 0.02, with two luminescence centers at 462 and 558 nm.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Inorganic & Nuclear
Zhicheng Liao, Liting Qiu, Qian Zhang, Xiantao Wei, Yonghu Chen, Min Yin
Summary: In recent years, there has been increasing effort to develop single-phase white phosphors for white light-emitting diodes (WLEDs) due to limitations of traditional WLEDs such as reabsorption and color deviation. A new strategy using the Bi3+-Eu3+ energy transfer in suitable single-phase phosphors has been proposed. In this study, Gd3TaO7:xBi(3+) and Gd3TaO7:0.01Bi(3+),yEu(3+) phosphors were synthesized and characterized. The results show the potential of Gd3TaO7:0.01Bi(3+),yEu(3+) phosphor as a viable candidate for WLED applications.
DALTON TRANSACTIONS
(2023)
Article
Spectroscopy
Ziyao Wang, Jian Chen, Yangai Liu, Xuezhu Luan, Guofeng Ma
Summary: In this study, a color-tunable green-orange-emitting phosphor Ba3Lu4O9:Bi3+,Eu3+ was successfully prepared by introducing Bi3+ and Eu3+ into the host lattice. The emission spectra cover the whole visible region and show typical emissions from both Bi3+ and Eu3+, with the emitting color being tunable. Energy transfer behavior in the phosphor was confirmed, resulting in improved emission intensity of Eu3+. Moreover, composite films made with the phosphor show promising potential for near-UV pumped lighting and flexible devices.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Chemistry, Physical
Liandong Guo, Ting Li, Chunchun Zhu, Wenchao Liang, Lina Wu
Summary: Bi3+ and Eu3+ co-doped CaZnOS phosphors were synthesized, and their emission characteristics were investigated. The tunable emission chromaticity from cyan to red was achieved by regulating the proportion of Eu3+ in the phosphors. Moreover, the optimized concentrations of Bi3+ and Eu3+ in CaZnOS phosphors showed potential application in white light emitting diodes (W-LEDs).
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
DanYu Zhang, YuXuan Luo, ShuJun Xu, LianJie Li, JunYu Chen, Lei Lei, Hai Guo
Summary: In this paper, a Y4GeO8:Bi3+,Eu3+ phosphor with dual emission centers was synthesized using solid-state reaction technology. The structure, morphology, and luminous properties of the phosphor were investigated, and its potential applications in optical thermometry were explored using fluorescence intensity ratio and thermochromic techniques. The Y4GeO8:Bi3+,Eu3+ phosphor exhibited broadband emission from Bi3+ ions and characteristic emission peaks from Eu3+ ions under 290 and 347 nm excitation. It showed excellent temperature-sensing capabilities, with a maximum relative sensitivity of 1.51% K-1 (λ(ex) = 290 nm). The emitted color of the phosphor shifted from faint yellow to red with a high chromaticity shift (0.180) as the temperature increased from 303 to 513 K, which could be easily distinguished by the naked eye. The results suggested that the Y4GeO8:Bi3+,Eu3+ phosphor has potential applications in optical temperature measurement and high-temperature safety marking.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Optics
Shubham Srivastava, Shantanu K. Behera, Bibhuti B. Nayak
Summary: This study investigates the excitation wavelength dependent photoluminescence characteristics and white light generation in europium and terbium doped yttrium borate phosphors. Results show that adjusting the concentrations of europium and terbium can produce multi-color emissions, including white light. The optimal combination was found to be 3 mol% Eu and 5 mol% Tb co-doped YBO3 for white light emission.
Article
Materials Science, Ceramics
Yi Zhu, Yun Liu, Guoqiang Tan, Wenlong Liu, Huijun Ren, DingHan Liu, Rong Wang, Sen Ye, Jin Zhang
Summary: In this study, La2MoO6:Eu3+, Bi3+ phosphors were successfully synthesized by high temperature solid-state reaction, and it was found that Bi3+ ions can enhance the emission intensity of phosphors via nonsensitization, potentially promoting their further application in rare earth luminescent materials.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Haiyan Wu, Huimin Li, Lihong Jiang, Tao Tan, Shangwei Wang, Shengjian Jiao, Weihong Yuan, Jiangyue Su, Chengyu Li, Hongjie Zhang
Summary: A novel white-emitting optical temperature sensor based on energy transfer in a YBO3 crystal was designed, which offers a series of color tunable phosphors and potential as a replacement for WLED phosphors. The study demonstrates temperature sensitive energy transfer dynamics and calculates sensitivity values, providing a new perspective for developing multifunctional phosphors for optical temperature sensing and WLED applications.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Review
Chemistry, Physical
Philippe Boutinaud
Summary: This paper reviews and rationalizes the luminescence properties of Bi3+ in 177 inorganic compounds based on two simple and easy-to-use models. These models are applicable to any compound with a known crystal structure. The calculation of the nephelauxetic function, he, in one of the models is described in detail for easy implementation in a homemade calculator or machine-learning algorithm. Finally, a criterion based on the experimental value of the Stokes shift is introduced to aid in determining the origin of Bi3+-related emission.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Spectroscopy
Jiajun Chen, Fangsheng Qian, Chen Zhuang, Yining Zhang, Jia Zhang
Summary: Novel Yb3+-Er3+ and Eu3+ doped oxide phosphors were designed for non-contact optical temperature sensing, with different doping concentrations affecting emission intensities. Temperature-dependent luminescent spectra were studied to understand the performance of these phosphors under varying conditions.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Chemistry, Inorganic & Nuclear
Huifang Yang, Panlai Li, Zejun Ye, Xiaoxue Huo, Yu Wang, Qian Wu, Zhijun Wang
Summary: A novel yellow-emitting phosphor was synthesized and used to fabricate white LEDs with high color rendering index and low correlated color temperature.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Physical
O. Shantajit Singh, Ranjoy Wangkhem, N. Shanta Singh
Summary: The hydrothermally synthesized Bi3+-sensitized Y2O3:Eu3+ phosphors were characterized, revealing efficient energy transfer from Bi3+ to Eu3+ ions through dipole-dipole interactions. The selection of excitation wavelength and Eu3+ concentration in Y2O3 can provide multicolor emission and white light emission. The maximum quantum yield of 24% was observed in Bi3+ (1 at%) sensitized Y2O3:Eu3+ (2 at%).
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
Hui Zhang, Yazhou Wang, Yan Jiao, Si Chen, Meisong Liao, Yongzheng Fang, Weiqing Gao, Lili Hu
Summary: Fluorescent powders doped with Bi3+/Ln3+ (Eu3+, Er3+) were synthesized, showing multicolor luminescence and excitation wavelength dependence. The phosphors emitted blue, pink, lavender, and red lights under UV excitation and also upconversion-emission light from green to yellow under 980-nm laser excitation. The luminous color of the Ca3Y2Ge3O12:0.01Bi3+, 0.2Er3+ phosphor changed from yellow to orange with increasing temperature. Word-hiding experiment successfully achieved realistic information hiding with complex color transformation in the flower pattern. Rapid multimodal and complex discoloration was also achieved using easy-to-obtain light sources, demonstrating the potential of Bi3+/Ln3+ phosphors for anticounterfeiting applications.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
LianJie Li, JunYu Chen, XiuSha Peng, ShuJun Xu, RongFei Wei, Hai Guo
Summary: White light-emitting diodes (W-LEDs) play an important role in human life. However, the lack of red-light emission phosphors in packaged W-LEDs results in high color temperature and low color rendering index. In this study, red luminescent Bi3+ and Eu3+ doped Lu2WO6 phosphors were manufactured and investigated for their structural and luminescent properties. The results show that Lu2WO6:Bi3+, Eu3+ samples have promising applications in solid-state lighting, with favorable thermal stability and efficient energy transfer processes.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Lei Chen, Mi Fei, Zhao Zhang, Yang Jiang, Shifu Chen, Yongqi Dong, Zhihu Sun, Zhi Zhao, Yibing Fu, Jinhua He, Can Li, Zheng Jiang
CHEMISTRY OF MATERIALS
(2016)
Article
Nanoscience & Nanotechnology
Longfei Mi, Hui Wang, Yan Zhang, Xudong Yao, Yajing Chang, Guopeng Li, Guohua Li, Yang Jiang
Article
Chemistry, Physical
Longfei Mi, Hui Wang, Yan Zhang, Xudong Yao, Yajing Chang, Guopeng Li, Lei Chen, Guohua Li, Yang Jiang
JOURNAL OF ALLOYS AND COMPOUNDS
(2017)
Article
Chemistry, Physical
Mi Fei, Yunfei Tian, Zhao Zhang, Liangrui He, Jie Chen, Fangdong Bao, Pingjuan Zhang, Qiuhong Zhang, Lei Chen
JOURNAL OF ALLOYS AND COMPOUNDS
(2017)
Article
Chemistry, Applied
Chen Lei, Zhang Zhao, Tian Yunfei, Fei Mi, He Liangrui, Zhang Pingjuan, Zhang Wenhua
JOURNAL OF RARE EARTHS
(2017)
Article
Physics, Applied
Yuanjun Yang, Yingxue Yao, Lei Chen, Haoliang Huang, Benjian Zhang, Hui Lin, Zhenlin Luo, Chen Gao, Y. L. Lu, Xiaoguang Li, Gang Xiao, Ce Feng, Y. G. Zhao
APPLIED PHYSICS LETTERS
(2018)
Article
Materials Science, Multidisciplinary
Mei Zhu, Yunfei Tian, Jie Chen, Mi Fei, Liangrui He, Lei Chen, Fang Peng, Qingli Zhang, Ting-Shan Chan
FUNCTIONAL MATERIALS LETTERS
(2018)
Article
Materials Science, Multidisciplinary
Liangrui He, Mi Fei, Jie Chen, Yunfei Tian, Yang Jiang, Yang Huang, Kai Xu, Juntao Hu, Zhi Zhao, Qiuhong Zhang, Haiyong Ni, Lei Chen
Article
Chemistry, Multidisciplinary
Lei Chen, Peng Cheng, Zhao Zhang, Liangrui He, Yang Jiang, Guobao Li, Xiping Jing, Yan'guang Qin, Min Yin, Ting-Shan Chan, Bin Hong, Shi Tao, Wangsheng Chu, Zhi Zhao, Haiyong Ni, Holger Kohlmann, Oliver Oeckler
Article
Chemistry, Multidisciplinary
Lei Chen, Guifang Zheng, Gang Yao, Pingjuan Zhang, Shangkai Dai, Yang Jiang, Heqin Li, Binbin Yu, Haiyong Ni, Shizhong Wei
Article
Chemistry, Physical
Lei Wang, Cailu Wang, Yang Chen, Yang Jiang, Lei Chen, Jinzhang Xu, Bingyan Qu, Hubertus T. Hintzen
Summary: The red afterglow of current rare-earth-activated long persistent luminescence (LPL) phosphors is limited to less than 6 hours, hindering their practical multiscenario applications. In this study, a rare-earth-free red-emitting LPL phosphor SrGa2O4:Cu2+ was developed, which exhibited an afterglow lasting over 30 hours at around 622 nm, matching the luminance of blue or green-emitting LPL phosphors. The Cu2+ ion was charged by ultraviolet light and emitted light over a broad band. The vacancies in oxygen and negatively charged gallium contributed to the long persistent luminescence of SrGa2O4:Cu2+. These findings could significantly expand the potential applications of LPL phosphors and stimulate future research on multicolor LPL phosphors.
CHEMISTRY OF MATERIALS
(2022)
Review
Biochemical Research Methods
Hossein Chamkouri, Qi Liu, Yuqin Zhang, Changchun Chen, Lei Chen
Summary: Photobiomodulation therapy is an innovative treatment for neurological and psychological conditions that stimulates mitochondrial and ion channel activity to improve neuronal metabolism and reduce inflammation. It shows potential for treating depression and other diseases, but faces challenges due to light transmission restrictions in tissues.
JOURNAL OF BIOPHOTONICS
(2023)
Article
Chemistry, Physical
Zhiyuan Fu, Dan Luo, Lei Chen, Yuxue Wei, Mingyang Ren, Wenjing Wang, Chenghua Zhang, Song Sun
Summary: Carbon wrapped iron catalysts have been extensively studied to achieve efficient conversion of syngas into high-value-added chemicals. A Fe3C@C catalyst with defect-rich graphite shell shows a C5+ selectivity of 70.1% and CH4 selectivity of 9.0% at a CO conversion of 55.2%, which is attributed to enhanced reactant adsorption and anti-oxidation properties of Fe3C during Fischer-Tropsch synthesis.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Pengcheng Li, Enze Xu, Jiamin Zhang, Lei Chen, Zhenjie Sun, Li Wang, Yang Jiang
Summary: In this study, a two-dimensional MOF material ZIF-9 was treated to obtain a flower-shaped carbon skeleton coated with Co-vacancy, Co1-xS nanoparticles, which effectively improved the electrical conductivity and cycling performance of the compound. The cobalt vacancy altered the local electronic structure and atomic populations, promoting sodium ion migration and showing good cycling performance under high current density. The obtained Co1-xS@C exhibited excellent electrochemical performance, maintaining a capacity of about 300 mA h g(-1) at a high current density of 5 A g(-1) after 250 cycles, indicating the potential of transition metal sulfide materials in energy storage applications.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Multidisciplinary Sciences
Liangrui He, Mi Fei, Jie Chen, Yunfei Tian, Yang Jiang, Yang Huang, Kai Xu, Juntao Hu, Zhi Zhao, Qiuhong Zhang, Haiyong Ni, Lei Chen
