Song Young Min, Jeong Yonkil, Yeo Chan Il, Lee Yong Tak
School of Information and Mechatronics, Gwangju Institute of Science and Technology, 1 Oryong-dong, Buk-gu, Gwangju 500-712, South Korea.
Opt Express. 2012 Nov 5;20(23):A916-23.
We present the effect of broadband antireflective coverglasses (BARCs) with moth eye structures on the power generation capability of a sub-receiver module for concentrated photovoltaics. The period and height of the moth eye structures were designed by a rigorous coupled-wave analysis method in order to cover the full solar spectral ranges without transmission band shrinkage. The BARCs with moth eye structures were prepared by the dry etching of silver (Ag) nanomasks, and the fabricated moth eye structures on coverglass showed strongly enhanced transmittance compared to the bare glass with a flat surface, at wavelengths of 300 - 1800 nm. The BARCs were mounted on InGaP/GaAs/Ge triple-junction solar cells and the power conversion efficiency of this sub-receiver module reached 42.16% for 196 suns, which is a 7.41% boosted value compared to that of a module with bare coverglass, without any detrimental changes of the open circuit voltages (V(oc)) and fill factor (FF).
我们展示了具有蛾眼结构的宽带减反射盖玻片（BARCs）对聚光光伏子接收器模块发电能力的影响。为了在不使透射带变窄的情况下覆盖整个太阳光谱范围，采用严格耦合波分析方法设计了蛾眼结构的周期和高度。通过对银（Ag）纳米掩膜进行干法蚀刻制备了具有蛾眼结构的BARCs，与具有平整表面的裸玻璃相比，在盖玻片上制备的蛾眼结构在300 - 1800 nm波长范围内显示出大幅提高的透过率。将BARCs安装在InGaP/GaAs/Ge三结太阳能电池上，该子接收器模块在196倍聚光条件下的功率转换效率达到42.16%，与使用裸盖玻片的模块相比提高了7.41%，且开路电压（V(oc)）和填充因子（FF）没有任何不利变化。
