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DOI	10.3390/nano9040626
	The Effects of ZnTe:Cu Back Contact on the Performance of CdTe Nanocrystal Solar Cells with Inverted Structure
	Chen, Bingchang; Liu, Junhong; Cai, Zexin; Xu, Ao; Liu, Xiaolin; Rong, Zhitao; Qin, Donghuan; Xu, Wei; Hou, Lintao; Liang, Quanbin
发表日期	2019
ISSN	2079-4991
卷号	9 期号:4
英文摘要	CdTe nanocrystal (NC) solar cells have received much attention in recent years due to their low cost and environmentally friendly fabrication process. Nowadays, the back contact is still the key issue for further improving device performance. It is well known that, in the case of CdTe thin-film solar cells prepared with the close-spaced sublimation (CSS) method, Cu-doped CdTe can drastically decrease the series resistance of CdTe solar cells and result in high device performance. However, there are still few reports on solution-processed CdTe NC solar cells with Cu-doped back contact. In this work, ZnTe:Cu or Cu:Au back contact layer (buffer layer) was deposited on the CdTe NC thin film by thermal evaporation and devices with inverted structure of ITO/ZnO/CdSe/CdTe/ZnTe:Cu (or Cu)/Au were fabricated and investigated. It was found that, comparing to an Au or Cu:Au device, the incorporation of ZnTe:Cu as a back contact layer can improve the open circuit voltage (V-oc) and fill factor (FF) due to an optimized band alignment, which results in enhanced power conversion efficiency (PCE). By carefully optimizing the treatment of the ZnTe:Cu film (altering the film thickness and annealing temperature), an excellent PCE of 6.38% was obtained, which showed a 21.06% improvement compared with a device without ZnTe:Cu layer (with a device structure of ITO/ZnO/CdSe/CdTe/Au).
英文关键词	nanocrystal; CdTe; Cu-doped; ZnTe; solar cells; solution processed
WOS研究方向	Science & Technology - Other Topics ; Materials Science
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
来源期刊	NANOMATERIALS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158804
作者单位	Qin, DH; Xu, W (corresponding author), South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510640, Guangdong, Peoples R China.; Hou, LT (corresponding author), Jinan Univ, Guangdong Prov Key Lab Opt Fiber Sensing & Commun, Guangzhou Key Lab Vacuum Coating Technol & New En, Siyuan Lab,Dept Phys, Guangzhou 510632, Guangdong, Peoples R China.
推荐引用方式 GB/T 7714	Chen, Bingchang,Liu, Junhong,Cai, Zexin,et al. The Effects of ZnTe:Cu Back Contact on the Performance of CdTe Nanocrystal Solar Cells with Inverted Structure[J],2019,9(4).
APA	Chen, Bingchang.,Liu, Junhong.,Cai, Zexin.,Xu, Ao.,Liu, Xiaolin.,...&Liang, Quanbin.(2019).The Effects of ZnTe:Cu Back Contact on the Performance of CdTe Nanocrystal Solar Cells with Inverted Structure.NANOMATERIALS,9(4).
MLA	Chen, Bingchang,et al."The Effects of ZnTe:Cu Back Contact on the Performance of CdTe Nanocrystal Solar Cells with Inverted Structure".NANOMATERIALS 9.4(2019).