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测试分析了2种有机硅胶封装材料在3种加速老化试验前、后的光谱透过率。结果表明,2种有机硅胶在硅太阳电池的工作波段的透过率都很高。经过130d的去离子水浸没后,2种硅胶的光谱透过率都没有变化;硅胶A仅在湿热测试中于300～400nm波段的透过率有稍许变化,而在热循环测试中其光学性质很稳定;硅胶B在两种测试中于300～450nm波段的透过率都有少许降低;不过,两种硅胶经老化试验后的紫外-可见光波段的透过率还是高于EVA的。其中硅胶B对湿气的吸收比硅胶A强,湿气可以散射入射光,进而在透过率测试时降低硅胶样品的透过率。
The spectral transmittance of two kinds of silicone encapsulation materials before and after three kinds of accelerated aging tests were analyzed and tested. The results show that the two kinds of silicone gel in the operating wavelength of silicon solar cells are very high transmittance. After 130 days of immersion in deionized water, there was no change in the spectral transmittance of the two kinds of silica gel. Silica gel A only slightly changed its transmittance in the 300-400 nm band in the wet heat test, but its optical properties in the thermal cycling test Very stable; Silica gel B in both tests in the 300 ~ 450nm band transmittance have a slight reduction; However, the two silica gel aging test after the UV - visible light band transmittance is still higher than the EVA. Silicone B absorbs moisture more strongly than Silica A, which scatters incident light and, in turn, decreases the transmission of the silica gel sample during the transmittance test.