Investigation on antireflection coatings for Al:ZnO in silicon thin-film solar cells
Investigation on antireflection coatings for Al:ZnO in silicon thin-film solar cells
复制标题
DOI：
10.1016/j.ijleo.2012.10.012
复制
发表时间：
2013-09
期刊：
影响因子：
3.1
通讯作者：
Yuehui Lu;Xianpeng Zhang;Jinhua Huang;Jia Li;Tiefeng Wei;P. Lan;Ye Yang;Hua Xu;Weijie Song
中科院分区：
文献类型：
--
作者：
Yuehui Lu;Xianpeng Zhang;Jinhua Huang;Jia Li;Tiefeng Wei;P. Lan;Ye Yang;Hua Xu;Weijie Song
我们通过数值研究了由 SiO2 和/或 ZnO 组成的减反射 (AR) 涂层在透明导电氧化物掺铝 ZnO (AZO) 存在的情况下抑制界面反射的作用。模拟了三种结构：(a) 有机发光二极管 (OLED) 和平板显示器中的 AR 涂层，(b) 位于玻璃和 AZO 之间的 AR 涂层，以及 (c) 与情况 b 相同，除了 AZO 和非晶硅层之间涉及另一个 AR 涂层。根据 AM1.5 太阳光谱的加权平均透射率，即光伏透射率 (Tpv)，表明结构 a 和 b 之间没有明显差异，特别是当 AR 涂层的层数少于三层时。结构c中提出了一种提高Tpvis的有效方法，其中通过位于AZO和a-Si之间的三层AR涂层，Tpvis从73.54%提高到76.32%。这意味着，由于AZO和a-Si界面处的折射率相当不匹配而导致的界面反射的抑制，将有利于硅薄膜太阳能电池效率的提高。
We numerically investigate the role of antireflection (AR) coatings, composed of SiO2and/or ZnO, in suppression of interfacial reflections in the presence of the transparent conducting oxide, Al-doped ZnO (AZO). Three structures are simulated: (a) AR coatings in organic light-emitting diodes (OLEDs) and flat panel displays, (b) AR coating located between the glass and the AZO, and (c) same as the case b except the involvement of another AR coating between the AZO and the amorphous silicon layers. The weighted average transmittance according to the AM1.5 solar spectrum, the photovoltaic transmittance (Tpv), suggests that there is no evident difference between the structures a and b, especially when the layer number of AR coatings is less than three. An effective way to improveTpvis presented in the structure c, whereTpvis increased from 73.54% to 76.32% with a three-layered AR coating located between AZO and a-Si. It implies that the suppression of interfacial reflections, resulting from the considerable mismatch of refractive indices at the interface of AZO and a-Si, would benefit the efficiency improvement of silicon thin-film solar cells.