One-pot synthesis of CdSe@CdS core@shell quantum dots and their photovoltaics application in quantum-dot-sensitized ZnO nanorods

被引：27
|
作者：
Zhou, Chunyan [2 ]
Chen, Qian [2 ]
Wang, Guofang [2 ]
Guan, Anxiang [2 ]
Xu, Jiehua [2 ]
Liu, Xianhua [2 ]
Shi, Zhongfeng [1 ]
Zhou, Liya [1 ,2 ]
机构：
[1] Qinzhou Univ, Guangxi Coll & Univ Key Lab Beibu Gulf Oil & Nat, Coll Petr & Chem Engn, Qinzhou 535000, Peoples R China
[2] Guangxi Univ, Sch Chem & Chem Engn, Nanning 530004, Peoples R China
来源：
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2017年 / 332卷
基金：
中国国家自然科学基金;
关键词：
Core@shell quantum dots; ZnO nanorods; Photovoltaic performance; AQUEOUS-SOLUTION; SOLAR-CELLS; NANOCRYSTALS; ROUTE; PHOTOSTABILITY; NANOWIRE; GROWTH; ARRAYS;
D O I：
10.1016/j.jphotochem.2016.08.035
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：
Mercaptopropanoic acid (MPA)-capped CdSe@CdS core@shell quantum dots (QDs) were synthesized in a simple one-pot aqueous route. The core@shell QDs were subsequently used to grow Qp-decorated zinc oxide (ZnO) nanorod (NR) heterostructures through the direct adsorption technique. The analysis of structural and optical properties of CdSe@CdS core@shell QDs showed that improved intensity and red shift of QD sensitizers' absorption enhanced the light harvest of QD-sensitized solar cells (QDSSCs) that could effectively enhance the photovoltaic performance of QDSSCs. CdSe@CdS-ZnO composite NRs showed photoactivity at a broader range of wavelength to 540 nm with a maximum incident-photon-to- current-conversion efficiency value of 52%. The photoconversion efficiency of CdSe@CdS-ZnO with a maximum value of 1.2121% was enhanced two times more than that of ZnO/CdS and ZnO/CdSe, thus demonstrating the advantage of this core@shell QD-sensitized NRs structure. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：251 / 257
页数：7
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