Macroscopic Study on Current Transport Path in Front-Side Contacts of Crystalline Silicon Solar Cells

doi:10.1002/pssa.201900480

	Macroscopic Study on Current Transport Path in Front-Side Contacts of Crystalline Silicon Solar Cells
	Xiong, Shenghu; Yuan, Xiao; Yang, Yunxia; Zhang, Jiefeng; Tong, Hua; Liu, Cui; Ye, Xiaojun; Li, Shengyong; Luo, Lan; Wang, Xianhao
刊名	PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
	2019-12-31
关键词	contact-end voltages contact resistivities current transport paths solar cell metallization transfer lengths
ISSN号	1862-6300
DOI	10.1002/pssa.201900480
文献子类	Article; Early Access
英文摘要	Double rectangular transmission line model and contact-end voltage measurement are used to study the variation in sheet resistance and current transfer length of the contact interface between the front-side electrode and the emitter of crystalline silicon solar cells during metallization. The current distribution and its relationship with the sheet resistances of the electrode, contact interface, and emitter are given at the macrolevel. The model shows that the current flows transversely for approximate to 50-500 mu m in the highly conductive interface with a sheet resistance in the range of 0.5-5 omega (-1) beneath the designed electrodes. The I-V curves beneath the front silver pad sintered at lower, optimum, and over-fired temperatures are always linear. However, they are nonlinear between the front-side and rear-side electrodes of the double phosphorus-doped N-type silicon substrates, which suggests that the contact type changes from Ohmic to Schottky. The experimental results imply that the photogenerated current on the emitter surface is mainly transferred transversely via the crystallites embedded in the shallow highly doped silicon layer rather than the deeper lightly doped contact area at the contact interface.
WOS关键词	NONZERO METAL RESISTANCE ; METALLIZATION ; MODEL
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	WILEY-V C H VERLAG GMBH
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/27523]
专题	中国科学院上海硅酸盐研究所
推荐引用方式 GB/T 7714	Xiong, Shenghu,Yuan, Xiao,Yang, Yunxia,et al. Macroscopic Study on Current Transport Path in Front-Side Contacts of Crystalline Silicon Solar Cells[J]. PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE,2019.
APA	Xiong, Shenghu.,Yuan, Xiao.,Yang, Yunxia.,Zhang, Jiefeng.,Tong, Hua.,...&Wang, Xianhao.(2019).Macroscopic Study on Current Transport Path in Front-Side Contacts of Crystalline Silicon Solar Cells.PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE.
MLA	Xiong, Shenghu,et al."Macroscopic Study on Current Transport Path in Front-Side Contacts of Crystalline Silicon Solar Cells".PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE (2019).