Large enhancement in cell performance of CdSe-sensitized ZnO solar cell via ZnSe overcoating

	Large enhancement in cell performance of CdSe-sensitized ZnO solar cell via ZnSe overcoating
	Jia, Jianguang 2; Liu, Chunmei 2; Lin, Yuan 1,3; Zhou, Xiaowen 1
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2017-12-15
卷号	727 页码:80-85
关键词	Quantum Dots Sensitized Solar Cell Zno Znse Interface Charge Recombination
英文摘要	Charge recombination is an important factor that limits the cell efficiency of quantum dot sensitized solar cells (QDSSCs). Herein, we report a facile way to improve the cell performance of CdSe sensitized ZnO QDSSC by overcoating a thin layer of ZnSe on CdSe/ZnO film through a successive ionic layer adsorption and reaction (SILAR) procedure. Photovoltaic investigations indicate that ZnSe overcoating can increase photocurrent and photovoltage of the cell, resulting in significant enhancement of the cell efficiency, which is much better than the widely used traditional ZnS material. The superior role of ZnSe overcoating is ascribed to its large inhibition of charge recombination loss owing to its suitable band structure, efficient passivation of ZnO and CdSe QDs as well as its small lattice mismatch with CdSe that leads to the large decrease of surface/interface defects in CdSe/ZnO photoanode. This finding provides an alternative efficient way to enhance the cell performance of ZnO based QDSSC by suppressing the charge recombination. (C) 2017 Elsevier B.V. All rights reserved.
语种	英语
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/41265]
专题	化学研究所_光化学实验室
作者单位	1.Chinese Acad Sci, Inst Chem, CAS Resarch Educ Ctr Excellence Mol Sci, Beijing Natl Lab Mol Sci,Key Lab Photochem, Beijing 100190, Peoples R China 2.Beijing Univ Chem Technol, Sch Sci, Dept Phys Chem, Beijing 100029, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Jia, Jianguang,Liu, Chunmei,Lin, Yuan,et al. Large enhancement in cell performance of CdSe-sensitized ZnO solar cell via ZnSe overcoating[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2017,727:80-85.
APA	Jia, Jianguang,Liu, Chunmei,Lin, Yuan,&Zhou, Xiaowen.(2017).Large enhancement in cell performance of CdSe-sensitized ZnO solar cell via ZnSe overcoating.JOURNAL OF ALLOYS AND COMPOUNDS,727,80-85.
MLA	Jia, Jianguang,et al."Large enhancement in cell performance of CdSe-sensitized ZnO solar cell via ZnSe overcoating".JOURNAL OF ALLOYS AND COMPOUNDS 727(2017):80-85.