Patent ID: 8242795
Filing Date: 2012-08-14
Classification: H01L,H02S,Y02E

Abstract:
1. An improved method of testing the durability of a CIS based thin-film solar cell module, which is a durability test method capable of correctly evaluating a property of a CIS based thin-film solar cell module that the module recovers its conversion efficiency upon irradiation with a weak light, wherein a CIS based thin-film solar cell module whose durability is to be tested is subjected to a damp heat test which is a test in which a sample is stored in the dark for 1,000 hours under the relatively high-temperature high-humidity conditions of a temperature of 85° C. and a relative humidity of 85%, and that in conducting the damp heat test, the power of a xenon lamp is regulated so that the constant-light solar simulator (solar simulator) emits a weak light corresponding to the amount of solar radiation in cloudy weather and the module is continuously irradiated with the weak light throughout the test period under the same temperature, humidity, and storage period conditions to determine various solar cell characteristics, and wherein the module is irradiated with the weak light at an irradiance of 100-300 W/m