| Effect of Precursor Molar Ratio of [S^2-]/[Zn^2＋] on Particle Size and Photoluminescence of ZnS：Mn^2＋ Nanocrystals |
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| 引用本文： | 董冬青,李岚,张晓松,韩旭,安海萍.Effect of Precursor Molar Ratio of [S^2-]/[Zn^2＋] on Particle Size and Photoluminescence of ZnS：Mn^2＋ Nanocrystals[J].中国物理快报,2007,24(9):2661-2663. |
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| 作者姓名： | 董冬青 李岚 张晓松 韩旭 安海萍 |
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| 作者单位： | [1]Institute of Materials Physics, and Tianjin Key Laboratory for Optoelectronic Materials and Devices, Tianjin University of Technology, 300384 [2]Institute of Modern Optics, Nankai University, Tianjin 300071 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant No 10674074, and the Tianjin Natural Science Foundation under Grant Nos 06TXTJJC14601 and 07JCYBJC06400. |
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| 摘 要： | We investigate the influence of precursor molar ratio of S^2-]/Zn^2＋] on particle size and photoluminescence （PL） of ZnS：Mn^2＋ nanocrystMs. By changing the S^2-]/Zn^2＋] ratio from 0.6 （Zn-rich） to 2.0 （S-rich）, the particle size increases from nearly 2. 7nm to about 4.Ohm. The increase in the ratio of S^2-]/Zn^2＋] cadses a decrease of PL emission intensity of ZnS host while a distinct increase of Mn^2＋ emission. The maximum intensity for the luminescence of Mn^2＋ emission is observed at the ratio of S^2-]/Zn^2＋] ≈ 1.5. The possible mechanism for the results is discussed by filling of S^2- vacancies and the increase of Mn^2＋ ions incorporated into ZnS lattices.
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| 关 键 词： | [S^2-]/[Zn^2＋] 比率 粒子型号 光激发光 ZnS：Mn^2＋ |
| 收稿时间： | 2007-5-30 |
| 修稿时间： | 2007-03-30 |
Effect of Precursor Molar Ratio of [S2-]/[Zn2+] on Particle Size and Photoluminescence of ZnS:Mn2+ Nanocrystals |
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| DONG Dong-Qing,LI Lan,ZHANG Xiao-Song,HAN Xu,AN Hai-Ping.Effect of Precursor Molar Ratio of [S2-]/[Zn2+] on Particle Size and Photoluminescence of ZnS:Mn2+ Nanocrystals[J].Chinese Physics Letters,2007,24(9):2661-2663. |
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| Authors: | DONG Dong-Qing LI Lan ZHANG Xiao-Song HAN Xu AN Hai-Ping |
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| Institution: | 1 Institute of Materials Physics, and Tianjin Key Laboratory for Optoelectronic Materials and Devices, Tianjin University of Technology, 300384 ; 2 Institute of Modern Optics, Nankai University, Tianjin 300071 |
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| Abstract: | |
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| Keywords: | 73 63 Bd 73 63 Kv 74 25 Gz |
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