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Title:
P-TYPE PERC DOUBLE-SIDED SOLAR CELL, ASSEMBLY THEREOF, SYSTEM THEREOF AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2018/157823
Kind Code:
A1
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 sliver electrodes are vertically connected to the back aluminum gate lines; gate line spines (10) are provided on the back aluminum gate lines and are connected to the back aluminum gate lines; a first laser grooving area (8) is formed by performing laser grooving on the back passivation layer; the back aluminum gate lines are connected to the P-type silicon by means of the first laser grooving area; the first laser grooving area comprises multiple groups of first laser grooving units (81) which are provided horizontally; each group of first laser grooving units comprises one or more first laser grooving bodies (82) which are provided horizontally; the back aluminum gate lines are vertical to the first laser grooving bodies. The solar cell is simple in structure, low in costs, easy to generalize, and high in photoelectric conversion efficiency.

Inventors:
LIN KANG-CHENG (CN)
FANG JIEBIN (CN)
CHEN GANG (CN)
Application Number:
PCT/CN2018/077590
Publication Date:
September 07, 2018
Filing Date:
February 28, 2018
Export Citation:
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Assignee:
GUANGDONG AIKO SOLAR ENERGY TECHNOLOGY CO LTD (CN)
ZHEJIANG AIKO SOLAR ENERGY TECH CO LTD (CN)
International Classes:
H01L31/0224; H01L31/068; H01L31/18
Foreign References:
CN107425080A2017-12-01
CN106876497A2017-06-20
CN106887475A2017-06-23
CN103489934A2014-01-01
CN106252443A2016-12-21
CN105304731A2016-02-03
CN105702758A2016-06-22
CN105810769A2016-07-27
Attorney, Agent or Firm:
SCIHEAD PATENT AGENT CO., LTD (CN)
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