发光学报Issue(12)：1511-1519,9.DOI:10.3788/fgxb20143512.1511
基于不同电压下的电致发光和红外成像的太阳能电池缺陷检测
Defect Detection of Solar Cell Based on Electroluminescence and Thermography Imaging with Different Bias Voltage
摘要
Abstract
The electroluminescence and infrared thermography were used to detect the defects of the solar cells by applying different forward bias and reverse bias voltage. The solar cell under forward bias mainly emits infrared light from 850 to 1 200 nm due to the recombination of electron and hole. The intensity of the emitted light depends on the series resistance and minority carrier diffusion length of the solar cell, so it can be used to detect the defects of finger disturbing, crack, and elec-trode etching, et al. The emission of light under reverse bias is intra-band emission which covers a wide spectrum from visible light to IR. The breakdown can be detected by reverse bias electrolumi-nescence ( RBEL) . Only under high bias, weak Ohmic shunt appears in RBEL. Linear and nonlin-ear shunt can be detected using IR thermography under different bias. Strong Ohimc shunt can be detected in forward and reverse bias. The nonlinear shunt depends on the type.关键词
电致发光/太阳能电池/不同电压/红外热成像Key words
electroluminescence/solar cell/different bias/thermography分类
信息技术与安全科学引用本文复制引用
鲁伟明,李省,张付特,符欣,胡辉..基于不同电压下的电致发光和红外成像的太阳能电池缺陷检测[J].发光学报,2014,(12):1511-1519,9.基金项目
基金项目:泰州市工程技术中心资助项目 （）
