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1. (WO2018157822) P-TYPE PERC DOUBLE-SIDED SOLAR CELL, ASSEMBLY THEREOF, SYSTEM THEREOF AND PREPARATION METHOD

Pub. No.:    WO/2018/157822    International Application No.:    PCT/CN2018/077589
Publication Date: Sat Sep 08 01:59:59 CEST 2018 International Filing Date: Thu Mar 01 00:59:59 CET 2018
IPC: H01L 31/0224
H01L 31/068
H01L 31/18
Applicants: GUANGDONG AIKO SOLAR ENERGY TECHNOLOGY CO., LTD
广东爱旭科技股份有限公司
ZHEJIANG AIKO SOLAR ENERGY TECHNOLOGY CO., LTD
浙江爱旭太阳能科技有限公司
Inventors: LIN, Kang-Cheng
林纲正
FANG, jiebin
方结彬
CHEN, Gang
陈刚
Title: P-TYPE PERC DOUBLE-SIDED SOLAR CELL, ASSEMBLY THEREOF, SYSTEM THEREOF AND PREPARATION METHOD
Abstract:
A P-type PERC double-sided solar cell, comprising back sliver electrodes (1), back aluminum gate lines (2), a back passivation layer (3), P-type silicon (4), an N-type emitter (5), a front silicon nitride film (6), and a front silver electrode (7) in sequence. The back silver electrodes and the back aluminum gate lines intersect at a first preset angle, wherein 10° < the first preset angle < 90°; a laser grooving area (8) is formed on the back passivation layer by means of laser grooving; the back aluminum gate lines are connected to the P-type silicon by means of the laser grooving area; the laser grooving area comprises multiple groups of laser grooving units (81); each group of laser grooving units comprises one or more laser grooving bodies (82); the back aluminum gate lines and the laser grooving bodies intersect at a second preset angle, wherein 10° < the second preset angle ≤ 90°. The solar cell is simple in structure, low in costs, easy to generalize, and high in photoelectric conversion efficiency.