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

页码：251 / 257

页数：7

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