Abstract
Abstract In this study, analysed the characteristics of power drop and surface damage in solar cell through high temperature and humidity test in the 3 case of EVA(ethylen e vinyl acetate) and 2 case ribbon thickness. The solar cells were tested during the 500hr in 85℃ temperature and 85% relative humidity conditions, that excerpted standard of PV Module(KS C IEC-61215 ). Through the EL(Electroluminescence) shots, specimen's surface have partialy damaged. Before and after high humidity and high temperature test, ribbon thickness 200㎛ EVA1 case power drop rate was 8.463%, EVA2 case was 6.667%, EVA3 case was 6.373%. In the ribbon thick ness 250㎛ EVA1 case power drop rate was 6.521%, EVA2 case was 8.517%, EVA3 case was 6.019%. EV A3 case was the lowest power and FF(fill factor) drop rate at the 2 case of ribbon thickness , because EVA3 is laerger than EVA1 and EVA2 in thickness, elongation and tensile strength.Keywords : Solar cell, EVA(ethylene vinyl acetate), High temper ature and high humidity, EL(electroluminescence)
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