Photovoltaic absorption enhancement in thin-film solar cells by non-resonant beam collimation by submicron dielectric particles
Photovoltaic absorption enhancement in thin-film solar cells by non-resonant beam collimation by submicron dielectric particles
复制标题
通过亚微米介电粒子非谐振光束准直增强薄膜太阳能电池的光伏吸收
DOI：
10.1063/1.4820573
复制
发表时间：
2013
影响因子：
3.2
通讯作者：
P. Belov
中科院分区：
文献类型：
--
作者：
C. Simovski;A. Shalin;P. Voroshilov;P. Belov
我们建议在薄膜太阳能电池中使用位于电池顶部的非吸收亚微米或微米大小的介电球密集排列（不明显规则）来增强光伏吸收。球体可以减少反射，形成有效的绽放层。同时，它们可以抑制通过光伏层的透射，将入射辐射转化为一组准直光束。光在光伏层内的聚焦允许增强其吸收，从而导致光伏电流的增加。每个球体分别聚焦入射波——这种机制不需要集体效应或共振，因此可以在很宽的光谱范围内发生。由于这种涂层的制造很容易，我们的捕光结构可能比以前已知的捕光结构更便宜，甚至可能比平面抗反射涂层更便宜。
We propose the enhancement of the photovoltaic absorption in thin-film solar cells using densely packed arrays (not obviously regular) of non-absorbing submicron or micron-sized dielectric spheres located on top of the cell. The spheres can decrease reflection forming an effective blooming layer. Simultaneously, they can suppress the transmission through the photovoltaic layer transforming the incident radiation into a set of collimated beams. The focusing of the light inside the photovoltaic layer allows enhanced absorption in it leading to the increase of the photovoltaic current. Every sphere focuses the incident wave separately—this mechanism does not require collective effects or resonances and therefore takes place in a wide spectral range. Since the fabrication of such the coating is easy, our light-trapping structure may be cheaper than previously known light-trapping ones and perhaps even than flat anti-reflecting coatings.