Extended photo-response of ZnO/CdS core/shell nanorods fabricated by hydrothermal reaction and pulsed laser deposition

被引：20
|
作者：
Yang, Qin [1 ,3 ]
Li, Yanli [1 ]
Hu, Zhigao [2 ]
Duan, Zhihua [2 ]
Liang, Peipei [1 ]
Sun, Jian [1 ]
Xu, Ning [1 ]
Wu, Jiada [1 ]
机构：
[1] Fudan Univ, Dept Opt Sci & Engn, Shanghai 200433, Peoples R China
[2] E China Normal Univ, Sch Informat Sci & Technol, Shanghai 200241, Peoples R China
[3] Guizhou Minzu Univ, Coll Sci, Guiyang 550025, Peoples R China
来源：
OPTICS EXPRESS | 2014年 / 22卷 / 07期
基金：
中国国家自然科学基金; 高等学校博士学科点专项科研基金;
关键词：
ZNO; PHOTOLUMINESCENCE; EFFICIENCY; GROWTH;
D O I：
10.1364/OE.22.008617
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Heterogenous nanostructures shaped with CdS covered ZnO (ZnO/CdS) core/shell nanorods (NRs) are fabricated on indium-tin-oxide by pulsed laser deposition of CdS on hydrothermally grown ZnO NRs and characterized through morphology examination, structure characterization, photoluminescence and optical absorption measurements. Both the ZnO cores and the CdS shells are hexagonal wurtzite in structure. Compared with bare ZnO NRs, the fabricated ZnO/CdS core/shell NRs present an extended photo-response and have optical properties corresponding to the two excitonic band-gaps of ZnO and CdS as well as the effective band-gap formed between the conduction band minimum of ZnO and the valence band maximum of CdS. (C) 2014 Optical Society of America
引用
收藏
页码：8617 / 8623
页数：7
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