Band gap variation of size-controlled ZnO quantum dots synthesized by sol-gel method

被引：441
作者：
Lin, KF
Cheng, HM
Hsu, HC
Lin, LJ
Hsieh, WF
机构：
[1] Natl Chiao Tung Univ, Dept Photon, Hsinchu 30050, Taiwan
[2] Natl Chiao Tung Univ, Inst Elect Opt Engn, Hsinchu 30050, Taiwan
[3] Ind Technol Res Inst, Mat Res Labs, Hsinchu 310, Taiwan
来源：
CHEMICAL PHYSICS LETTERS | 2005年 / 409卷 / 4-6期
关键词：
D O I：
10.1016/j.cplett.2005.05.027
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
ZnO quantum dots were synthesized successfully via a simple sol-gel method. The average size of quantum dots can be tailored using well-controlled concentration of zinc precursor. Size-dependent blue shifts of photoluminescence and absorption spectra revealed the quantum confinement effect. The band gap enlargement is in agreement with the theoretical calculation based on the effective mass model. Furthermore, as the particle size decreases, we observed an increase in the size-dependent Stokes shift of the photoluminescence peak relative to the absorption onset. (c) 2005 Elsevier B.V. All rights reserved.
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收藏
页码：208 / 211
页数：4
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