Method for reducing light-induced attenuation defect of solar cell module

The invention discloses a method for reducing the light-induced attenuation defect of a solar cell module. The method comprises the step that a solar cell module after a string welding process is placed in a device cavity with a temperature of 150 DEG C to 300 DEG C and light intensity of 20KW/m to...

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Bibliographic Details
Main Authors TONG RUI, ZHANG ZHONGWEI, KE XIMAN
Format Patent
LanguageChinese
English
Published 11.02.2020
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
SEMICONDUCTOR DEVICES
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Summary:The invention discloses a method for reducing the light-induced attenuation defect of a solar cell module. The method comprises the step that a solar cell module after a string welding process is placed in a device cavity with a temperature of 150 DEG C to 300 DEG C and light intensity of 20KW/m to 80KW/m and irradiated for 5s to 30s. According to the invention, the solar cell after the string welding process is irradiated under specific temperature and light conditions; the defects of a boron-oxygen (B-O) complex are deactivated by exciting hydrogen atoms in the cell, thereby eliminating the composite center; and the photoelectric conversion efficiency of the cell is restored or improved. 本发明公开了一种降低太阳能电池组件光致衰减缺陷的方法，包括将完成串焊工序的太阳能电池组件放置在温度为150℃-300℃，光照强度20KW/㎡-80KW/㎡的设备腔体中照射5s-30s。本发明通过将串焊工艺后的太阳能电池片放置在特定的温度、光照条件下照射，通过激发电池片中的氢原子钝化硼氧(B-O)复合体缺陷，从而消除复合中心，使得电池片光电转化效率得到恢复或提升。
Bibliography:Application Number: CN201910923660