能带匹配对β-FeSi_2(n)/c-Si(p)太阳能电池转化效率的影响  

Influence of Band Matching on the Conversion Efficiency of β-FeSi_2(n)/c-Si(p) Solar Cell

作　　者：刘振芳[1] 刘淑平[1] 聂慧军 

机构地区：[1]太原科技大学应用科学学院,太原030024

出　　处：《红外》2017年第3期31-36,共6页Infrared

摘　　要：运用AFORS-HET软件对TCO/β-FeSi_2(n)/a-Si(i)/c-Si(p)/μ_c-Si(p^+)型太阳能电池各层结构之间的能带匹配进行了模拟。模拟结果表明,透明导电氧化膜与n型层间的能带匹配对太阳能电池的转化效率、开路电压和填充因子有较大影响,可以通过能带匹配有效地提高太阳能电池的转化效率。导带补偿会阻碍少数载流子的输运,界面态会加快少数载流子在界面的复合,降低导带失配,从而有利于提高太阳能电池的转化效率。衬底与背场的界面电场可以提高太阳能电池的转化效率。The band matching among layers of a TCO/β-FeSi2（n）/a-Si（i）/c-Si（p）/μc-Si（p^＋） solar cell is simulated by using the software AFORS-HET.The simulation result shows that the matching of the transparent conductive oxide with the n-type layer has a greater influence on the conversion efficiency,open-circuit voltage and fill factor of a solar cell.The conversion efficiency of the solar cell can be improved effectively through band matching.Since conduction band compensation can hinter the transport of minority carriers and interface state can accelerate the recombination of minority carriers,conduction band mismatching can be reduced.This is beneficial to the improvement of the conversion efficiency of solar cells.The interface electric field between substrate and back field can improve the conversion efficiency of solar cells.

关 键 词：Β-FESI2 AFORS-HET 功函数 能带失配 界面态 转化效率 

分 类 号：TM914.4[电气工程—电力电子与电力传动]