| One- and Two-Photon Excited Fluorescence of CdSe and CdSe/ZnS Quantum Dots in n-Hexane |
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| 作者姓名： | 郝中华 龚红梅 韩俊波 翟月英 王取泉 |
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| 作者单位： | [1]Department of Physics, Wuhan University, Wuhan 430072 [2]Key Laboratory of Acoustic and Optic Materials and Devices of Ministry of Education, Wuhan University, Wuhan 430072 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grants Nos 10534030 and 10474075.The authors thank J. Peng for providing the QDs |
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| 摘 要： | One- and two-photon absorption and excited fluorescence of the CdSe and the core-shell structure CdSe/ZnS quantum dots （QDs） in n-hexane is investigated. The linear and nonlinear absorption coefficients are measured and the two-photon-absorption cross sections of the QDs are also obtained. For both one-photon fluorescence and two-photon fluorescence, the emission efficiency of CdSe/ZnS is much higher than that of CdSe, originating from the effective surface passivation of the core-shell structure.
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| 关 键 词： | 双光子激发荧光性 CdSe/ZnS量子点 n-己烷 非线性系数 |
| 收稿时间： | 2006-06-14 |
| 修稿时间： | 2006-06-14 |
One- and Two-Photon Excited Fluorescence of CdSe and CdSe/ZnS Quantum Dots in n-Hexane |
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| HAO Zhong-Hua, GONG Hong-Mei, HAN Jun-Bo, ZHAI Yue-Ying, WANG Qu-Quan.One- and Two-Photon Excited Fluorescence of CdSe and CdSe/ZnS Quantum Dots in n-Hexane[J].Chinese Physics Letters,2006,23(10):2859-2862. |
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| Authors: | HAO Zhong-Hua GONG Hong-Mei HAN Jun-Bo ZHAI Yue-Ying WANG Qu-Quan |
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| Institution: | 1. Department of Physics, Wuhan University, Wuhan 430072; 2.Key Laboratory of Acoustic and Optic Materials and Devices of Ministry of Education, Wuhan University, Wuhan 430072 |
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