Computational analysis of a high-efficiency tunnel oxide passivated contact (TOPCon) solar cell with a low-work-function electron-selective-collection layer

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	Computational analysis of a high-efficiency tunnel oxide passivated contact (TOPCon) solar cell with a low-work-function electron-selective-collection layer
	Wang, Dan; Quan, Cheng; Zeng, Yuheng; Liao, Mingdun; Tong, Hui; Yang, Zhenhai; Yuan, Zhizhong; Gao, Pingqi; Yan, Baojie; Chen, Kangmin
刊名	SOLAR ENERGY
	2018
卷号	170 页码:780-787
关键词	Si
英文摘要	In this work, the tunnel oxide passivated contact (TOPCon) with a low-work-function electron-selective-collection (ESC) layer is studied using a numerical simulation method. An exhaustive comparison between the low-work-function ESC TOPCon and the heavily-doped-Si TOPCon solar cell is carried out to find out the differences between these two kinds of devices. The work function modulated ESC TOPCon with a work function of typically < 3.6 eV and a low defect-density oxide layer of 1.2-1.4 rim displays an maximum implied open circuit voltage (iV(oc)) of 742 mV and a superior fill factor (FF) of 86%, which is competitive with a regular heavily-doped-Si ESC TOPCon solar cell. Noted that a defective transition layer (DTL) between the low-work-function layer and the oxide layer is studied herein, in which enhanced recombination decays not only the surface passivation but also the carrier transport. Also, the practical problems that might impede the development of a high-efficiency low-work-function ESC TOPCon solar cell are discussed. In summary, this work presents an overall computational analysis of the low-work-function ESC layer, tunnel oxide, defective transition layer and their combined effects on device performances, which provides a pathway towards fabricating a high-efficiency low-work-function ESC TOPCon solar cell.
学科主题	Chemistry ; Energy & Fuels ; Materials Science ; Physics
语种	英语
公开日期	2018-12-04
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/17275]
专题	2018专题
推荐引用方式 GB/T 7714	Wang, Dan,Quan, Cheng,Zeng, Yuheng,et al. Computational analysis of a high-efficiency tunnel oxide passivated contact (TOPCon) solar cell with a low-work-function electron-selective-collection layer[J]. SOLAR ENERGY,2018,170:780-787.
APA	Wang, Dan.,Quan, Cheng.,Zeng, Yuheng.,Liao, Mingdun.,Tong, Hui.,...&Ye, Jichun.(2018).Computational analysis of a high-efficiency tunnel oxide passivated contact (TOPCon) solar cell with a low-work-function electron-selective-collection layer.SOLAR ENERGY,170,780-787.
MLA	Wang, Dan,et al."Computational analysis of a high-efficiency tunnel oxide passivated contact (TOPCon) solar cell with a low-work-function electron-selective-collection layer".SOLAR ENERGY 170(2018):780-787.