Light trapping transparent electrodes with a wide-angle response
Light trapping transparent electrodes with a wide-angle response
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DOI：
10.1364/oe.431530
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发表时间：
2021-08-02
期刊：
影响因子：
3.8
通讯作者：
Kik, Pieter G.
中科院分区：
文献类型：
--
作者：
Sun, Mengdi;Kik, Pieter G.
研究了陷光透明电极的透射率随角度的变化。电极由嵌入在电介质覆盖层中的三角形金属线阵列组成。该结构的垂直入射照明通过全内反射产生光捕获，几乎消除了所有阴影损失。研究发现，改变外入射角会影响光捕获效率η（LT），这是由于内反射的部分损失以及与相邻导线的相互作用增加。尽管有这些影响，但明智地选择几何形状和材料可以在120度的大角度范围内将阴影损失减少85%以上。结果表明，在整个AM1.5太阳光谱范围内，当入射角在-60度和+60度之间偏离法线时，在非偏振光照射下，封装硅太阳能电池中的角度平均遮蔽损失可以减少两倍以上。(C)2021年美国光学学会根据OSA开放获取出版协议的条款
The angle dependent transmission of light trapping transparent electrodes is investigated. The electrodes consist of triangular metallic wire arrays embedded in a dielectric cover layer. Normal incidence illumination of the structure produces light trapping via total internal reflection, virtually eliminating all shadowing losses. It is found that varying the external angle of incidence can affect the light trapping efficiency eta(LT )due to partial loss of internal reflection and increased interaction with neighboring wires. Despite these effects, a judicious selection of geometry and materials can reduce shadowing losses by more than 85% over a surprisingly large angular range of 120 degrees. It is demonstrated that the angle-averaged shadowing losses in an encapsulated silicon solar cell under illumination with unpolarized light can be reduced by more than a factor of two for incident angles between -60 degrees and +60 degrees off-normal across the entire AM1.5 solar spectrum. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement