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Title

Ultrafast Random‐Pyramid Texturing for Efficient Monocrystalline Silicon Solar Cells.

Authors

Zhu, Lei; Zou, Shuai; Ni, Mengfei; Ding, Jianming; Wu, Chengkun; Lu, Zheng; Zeng, Yulian; Ye, Xiaoya; Wang, Xusheng; Fan, Ronglei; Sun, Hua; Liao, Baochen; Xu, Yadong; Shen, Mingrong; Su, Xiaodong

Abstract

Herein, an ultrafast random‐pyramid texturing process is proposed for monocrystalline silicon (mono‐Si) solar cells by combining metal‐catalyzed chemical etching (MCCE) and the standard alkaline texturing process. Namely, large numbers of artificial defects are introduced on the wafer surface in 3 min by MCCE; therefore, the process duration of alkaline texturing is largely shortened from 420 s for the as‐cut wafer to 180 s for the wafer with artificial defects due to its high surface reactivity. Moreover, those tiny artificial defects are apt to form small pyramids, resulting in a better light‐trapping performance. As a demonstration, the passivated emitter rear contact solar cell with ultrafast random pyramid texture achieves a power conversion efficiency of 23.02%. Therefore, such a cost‐effective ultrafast texturing strategy can open a promising new route toward the mass production of high‐efficiency industrial mono‐Si solar cells.

Subjects

SILICON solar cells; PHOTOVOLTAIC power systems; SOLAR cells; MASS production; CRYSTAL texture

Publication

Solar RRL, 2022, Vol 6, Issue 7, p1

ISSN

2367-198X

Publication type

Academic Journal

DOI

10.1002/solr.202200204

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