Effects of contact electrode size on the characteristics of polycrystalline-Si p-i-n solar cells  

作　　者：莊敏宏 黄厚穎 張勝良 

机构地区：[1]Department of Electronic Engineering,National Taiwan University of Science and Technology

出　　处：《Journal of Semiconductors》2011年第3期57-60,共4页半导体学报（英文版）

摘　　要：The effects of contact electrode size on the photo-voltaic characteristics of polycrystalline-Si p-i-n solar cells have been studied,with respect to a unit-cell pitch size of 1μm width.For the non-transparent Al contact electrode with a contact width of 0.05-0.2μm,the short-circuit current is obviously reduced with increasing contact width,due to a larger area of optical reflection by the electrode.On the other hand,even when using a transparent ITO（indium-tin-oxide） electrode,a larger width of contact electrode may also cause a smaller short-circuit current, due to a larger area of optical absorption by the electrode.However,for this ITO electrode,the contact electrode of 0.05μm width causes a smaller short-circuit current than that of 0.1μm width,primarily ascribed to a smaller area for collecting carrier and a larger contact resistance.As a result,while using the ITO contact electrode to enhance the conversion efficiency of the solar cell,a proper width of contact electrode should be employed to optimize the photo-voltaic characteristics.The effects of contact electrode size on the photo-voltaic characteristics of polycrystalline-Si p-i-n solar cells have been studied,with respect to a unit-cell pitch size of 1μm width.For the non-transparent Al contact electrode with a contact width of 0.05-0.2μm,the short-circuit current is obviously reduced with increasing contact width,due to a larger area of optical reflection by the electrode.On the other hand,even when using a transparent ITO（indium-tin-oxide） electrode,a larger width of contact electrode may also cause a smaller short-circuit current, due to a larger area of optical absorption by the electrode.However,for this ITO electrode,the contact electrode of 0.05μm width causes a smaller short-circuit current than that of 0.1μm width,primarily ascribed to a smaller area for collecting carrier and a larger contact resistance.As a result,while using the ITO contact electrode to enhance the conversion efficiency of the solar cell,a proper width of contact electrode should be employed to optimize the photo-voltaic characteristics.

关 键 词：polycrystalline-Si solar cell short-circuit current transparent contact electrode 

分 类 号：TM914.4[电气工程—电力电子与电力传动] TM914.41