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1. (WO2018157824) P-TYPE PERC DOUBLE-SIDED SOLAR CELL, ASSEMBLY THEREOF, SYSTEM THEREOF AND PREPARATION METHOD THEREFOR

Pub. No.:    WO/2018/157824    International Application No.:    PCT/CN2018/077591
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
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 THEREFOR
Abstract:
Provided are a P-type PERC double-sided solar cell, a preparation method therefor, an assembly thereof and a system thereof. The P-type PERC double-sided solar cell comprises 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 sliver electrodes (1) are vertically connected to the back aluminum gate lines (2); gate line spines (10) are provided on the back aluminum gate lines (2); an aluminum gate frame (9) is provided at the periphery of the back aluminum gate lines (2); the gate line spines (10) are connected to the back aluminum gate lines (2); the aluminum gate frame (9) is connected to the back aluminum gate lines (2) and the back sliver electrodes (1); a first laser grooving area (8) is formed by performing laser grooving on the back passivation layer (3); the back aluminum gate lines (2) are connected to the P-type silicon (4) by means of the first laser grooving area (8); the first laser grooving area (8) comprises multiple groups of first laser grooving units (81) which are provided horizontally; each group of first laser grooving units (81) comprises one or more first laser grooving bodies (82) which are provided horizontally; the back aluminum gate lines (2) are vertical to the first laser grooving bodies (82). The solar cell is simple in structure, low in costs, easy to generalize, and high in photoelectric conversion efficiency.