Wang Kejia Albert, Gunawan Oki, Moumen Naim, Tulevski George, Mohamed Hisham, Fallahazad Babak, Tutuc Emanuel, Guha Supratik
IBM T.J. Watson Research Center, Yorktown Heights, NY 10598, USA.
Opt Express. 2010 Nov 8;18 Suppl 4:A568-74. doi: 10.1364/OE.18.00A568.
We have developed an inexpensive and scalable method to create wire textures on multi-crystalline Si solar cell surfaces for enhanced light trapping. The wires are created by reactive ion etching, using a monolayer high self-assembled array of polymer microspheres as an etch mask. Chemical functionalization of the microspheres and the Si surface allows the mask to be assembled by simple dispensing, without spin or squeegee based techniques. Surface reflectivities of the resulting wire textured multi-crystalline solar cells were comparable to that of KOH etched single crystal Si (100). Electrically, the solar cells exhibited a 20% gain in the short circuit current compared to planar multicrystalline Si control devices, and a relative increase of 7-16% in the "pseudo" efficiencies when the series resistance contributions are extracted out.
我们开发了一种廉价且可扩展的方法，用于在多晶硅太阳能电池表面创建线状纹理，以增强光捕获。这些线是通过反应离子蚀刻创建的，使用聚合物微球的单层高自组装阵列作为蚀刻掩膜。微球和硅表面的化学功能化使得掩膜可以通过简单的滴涂进行组装，而无需基于旋转或刮板的技术。所得线状纹理多晶硅太阳能电池的表面反射率与氢氧化钾蚀刻的单晶硅（100）相当。在电学方面，与平面多晶硅控制器件相比，太阳能电池的短路电流提高了20%，当提取出串联电阻贡献时，“伪”效率相对提高了7-16%。
