- Song Jing
Song Jing
Tianjin Zhonghuan Neolight Tech.nology Co., Ltd, Tianjin 300385, China
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Search for this author on this site - Zhang Gao-feng
Zhang Gao-feng
Key Laboratory of Display Materials and Photoelectric Devices, Ministry of Education, Institute of Material Physics,Tianjin University of Technology, Tianjin 300384, China
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Search for this author on this site - Xing Tong-yan
Xing Tong-yan
Key Laboratory of Display Materials and Photoelectric Devices, Ministry of Education, Institute of Material Physics,Tianjin University of Technology, Tianjin 300384, China
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Search for this author on this site - Xu Jian-ping
Xu Jian-ping
Key Laboratory of Display Materials and Photoelectric Devices, Ministry of Education, Institute of Material Physics,Tianjin University of Technology, Tianjin 300384, China； Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
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Search for this author on this site - Zhang Xiao-song
Zhang Xiao-song
Key Laboratory of Display Materials and Photoelectric Devices, Ministry of Education, Institute of Material Physics,Tianjin University of Technology, Tianjin 300384, China；
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Search for this author on this site - Huang Qing-song
Huang Qing-song
Key Laboratory of Display Materials and Photoelectric Devices, Ministry of Education, Institute of Material Physics,Tianjin University of Technology, Tianjin 300384, China；
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This work has been supported by the National Natural Science Foundation of China (Nos.60877029, 10904109, 60977035 and 60907021), the Natural Science Foundation of Tianjin (No.09JCYBJC01400), and the Tianjin Key Subject for Materials Physics and Chemistry.
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ZnS:Mn2+ nanocrystals (NCs) with particle size from 1.9 nm to 3.2 nm are synthesized via chemical precipitation method with different [S2−]/[Zn2+] ratios. The size dependent decay for Mn emission exhibits a double exponential behavior. And two lifetime values, in millisecond time domain, can both be shortened with size increasing, which is attributed to enhanced interaction between host and Mn2+ impurity. A molecular structure model is proposed to interpret the tendency of two lifetime components, which is correlated to the number of S vacancy (Vs) defects around Mn2+.
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Song Jing, Zhang Gao-feng, Xing Tong-yan, Xu Jian-ping, Zhang Xiao-song, Huang Qing-song. Size influence on the fluorescence decay time of ZnS:Mn2+ nanocrystals[J]. Optoelectronics Letters,2012,8(1):1-3
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