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DOI	10.1088/0957-4484/25/36/365203
	Enhancement of open-circuit voltage and the fill factor in CdTe nanocrystal solar cells by using interface materials
	Zhu, Jiaoyan; Yang, Yuehua; Gao, Yuping; Qin, Donghuan; Wu, Hongbin; Hou, Lintao; Huang, Wenbo
发表日期	2014
ISSN	0957-4484
卷号	25 期号:36
英文摘要	Interface states influence the operation of nanocrystal (NC) solar cell carrier transport, recombination and energetic mechanisms. In a typical CdTe NC solar cell with a normal structure of a ITO/p-CdTe NCs/n-acceptor (or without)/Al configuration, the contact between the ITO and CdTe is a non-ohm contact due to a different work function (for an ITO, the value is similar to 4.7 eV, while for CdTe NCs, the value is similar to 5.3 eV), which results in an energetic barrier at the ITO/CdTe interface and decreases the performance of the NC solar cells. This work investigates how interface materials (including Au, MoOx and C-60) affect the performance of NC solar cells. It is found that devices with interface materials have shown higher V-oc than those without interface materials. For the case in which we used Au as an interface, we obtained a high open-circuit voltage of 0.65 V, coupled with a high fill factor (62%); this resulted in a higher energy conversion efficiency (ECE) of 5.3%, which showed a 30% increase in the ECE compared with those without the interlayer. The capacitance measurements indicate that the increased V-oc in the case in which Au was used as the interface is likely due to good ohm contact between the Au's and the CdTe NCs' thin film, which decreases the energetic barrier at the ITO/CdTe interface.
英文关键词	CdTe; nanocrystals; solar cells
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
来源期刊	NANOTECHNOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158586
作者单位	Zhu, JY (corresponding author), S China Univ Technol, State Key Lab Luminescent Mat & Devices, Inst Polymer Optoelect Mat & Devices, Guangzhou 510640, Guangdong, Peoples R China.
推荐引用方式 GB/T 7714	Zhu, Jiaoyan,Yang, Yuehua,Gao, Yuping,et al. Enhancement of open-circuit voltage and the fill factor in CdTe nanocrystal solar cells by using interface materials[J],2014,25(36).
APA	Zhu, Jiaoyan.,Yang, Yuehua.,Gao, Yuping.,Qin, Donghuan.,Wu, Hongbin.,...&Huang, Wenbo.(2014).Enhancement of open-circuit voltage and the fill factor in CdTe nanocrystal solar cells by using interface materials.NANOTECHNOLOGY,25(36).
MLA	Zhu, Jiaoyan,et al."Enhancement of open-circuit voltage and the fill factor in CdTe nanocrystal solar cells by using interface materials".NANOTECHNOLOGY 25.36(2014).