摘要
考虑双层减反射膜材料的折射率色散效应,采用光学干涉矩阵法计算了SiO2/ZnSe和SiO2/ZnS两种GaAs太阳电池双层减反射膜的反射率与波长的函数曲线,以及加权平均反射率随着顶层减反射膜SiO2厚度变化的函数曲线,并与未考虑色散效应的情况进行了对比.计算结果表明,色散效应对双层减反射膜的反射率有较大的影响,特别是对300～500nm波长范围的影响更大,且对不同材料的减反射膜的影响也是不同的.与未考虑色散效应的情况相比,考虑色散效应后,SiO2/ZnSe双层减反射膜的最小加权平均反射率从1.14%增加到1.55%,而SiO2/ZnS双层减反射膜的最小加权平均反射率却从1.49%减小到1.46%.
The dispersion effect of double-layer （DL） anti-reflection coatings （ARCs） is considered. The reflectance of DL SiO2/ZnSe and the SiO2/ZnS ARCs as a function of wavelength and weighted reflectance for SiO2 top anti-reflection coatings with different thicknesses in GaAs solar cells are calculated according to the optical interference matrix. The resulting curves are compared to those without dispersion effect. The results show that the dispersion effect noticeably influences the reflectance of DL ARCs,especially in the spectral range from 300 to 500nm. Moreover,different effects are displayed in different DL ARCs. Compared to those without dispersion effect,the minimal weighted reflectance of SiO2/ZnSe DL ARCs increases from 1.14% to 1.55% ,while that of SiO2/ZnS DL ARCs decreases from 1.49% to 1.46%.
基金
国家自然科学基金(批准号:60176001)
国家重大基础研究发展规划(批准号:2002CB311905)资助项目~~
作者简介
通信作者．Email：ymbai@mail．semi．ae.cn
