Bifacial p-Type PERC Solar Cell with Efficiency over 22% Using Laser Doped Selective Emitter

Caixia Zhang, Honglie Shen, Luanhong Sun, Jiale Yang, Shiliang Wu and Zhonglin Lu
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Caixia Zhang: College of Materials Science and Technology, Jiangsu Key Laboratory of Materials and Technology for Energy Conversion, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
Honglie Shen: College of Materials Science and Technology, Jiangsu Key Laboratory of Materials and Technology for Energy Conversion, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
Luanhong Sun: College of Materials Science and Technology, Jiangsu Key Laboratory of Materials and Technology for Energy Conversion, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
Jiale Yang: College of Materials Science and Technology, Jiangsu Key Laboratory of Materials and Technology for Energy Conversion, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
Shiliang Wu: Jiangsu Sunport Power Corp., Ltd., Wuxi 214028, China
Zhonglin Lu: Jiangsu Sunport Power Corp., Ltd., Wuxi 214028, China

Energies, 2020, vol. 13, issue 6, 1-12

Abstract: In this paper, we report one bifacial p-type PERC solar cell with efficiency over 22% using laser doped selective emitter produced in larger-scale commercial line on 6-inch mono-crystalline wafer. On front side of the solar cell, square resistance of p-n junction was found to be closely related with laser power at certain laser scan speed and frequency. On the other side, the rear fingers with different ratios of height and width and rear silicon nitride (SiN x ) layer with different thickness were optimized, and a highest rear efficiency of the bifacial solar cell was obtained. Finally, bifacial silicon solar cells with the front and rear efficiencies exceeding 22% and 15% (AM1.5, 1000 W/m 2 , 25 °C) were successfully achieved, respectively.

Keywords: p-type; bifacial; laser doped selective emitter; passivated emitter and rear (PERC) solar cells (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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