首页> 外文期刊>RSC Advances >Efficient (Cu1?xAgx)2ZnSn(S,Se)4 solar cells on flexible Mo foils
【24h】

Efficient (Cu1?xAgx)2ZnSn(S,Se)4 solar cells on flexible Mo foils

机译:柔性Mo箔上的高效(Cu1?xAgx)2ZnSn(S,Se)4太阳能电池

获取原文
           

摘要

Cation substitution plays a crucial role in improving the efficiency of Cu _(2) ZnSn(S,Se) _(4) (CZTSSe) solar cells. In this work, we report a significant efficiency enhancement of flexible CZTSSe solar cells on Mo foils by partial substitution of Cu ~(+) with Ag ~(+) . It is found that the band gap ( E _(g) ) of (Cu _(1? x ) Ag _( x ) ) _(2) ZnSn(S,Se) _(4) (CAZTSSe) thin films can be adjusted by doping with Ag with x from 0 to 6%, and the minimum E _(g) is achieved with x = 5%. We also found that Ag doping can obviously increase the average grain size of the CAZTSSe absorber from 0.4 to 1.1 μm. Additionally, the depletion width ( W _(d) ) at the heterojunction interface of CAZTSSe/CdS is found to be improved. As a result, the open-circuit voltage deficit ( V _(oc,def) ) is gradually decreased, and the band tailing is suppressed. Benefiting from the enhanced open-circuit voltage ( V _(oc) ), the power conversion efficiency (PCE) is successfully enhanced from 4.34% ( x = 0) to 6.24% ( x = 4%), and the V _(oc,def) decreases from 915 to 848 mV.
机译:阳离子取代在提高Cu_(2)ZnSn(S,Se)_(4)(CZTSSe)太阳能电池的效率中起着至关重要的作用。在这项工作中,我们报告了通过用Ag〜(+)部分取代Cu〜(+)大大提高了Mo箔上的柔性CZTSSe太阳能电池的效率。发现(Cu _(1?x)Ag _(x))_(2)ZnSn(S,Se)_(4)(CAZTSSe)薄膜的带隙(E _(g))可以是通过用0到6%的x掺杂Ag进行调节,并且x = 5%时达到最小E _(g)。我们还发现,Ag掺杂显然可以将CAZTSSe吸收剂的平均晶粒尺寸从0.4增大到1.1μm。另外,发现CAZTSSe / CdS的异质结界面处的耗尽宽度(W _(d))得到改善。结果,开路电压不足(V _(oc,def))逐渐减小,并且带拖尾得到抑制。得益于增强的开路电压(V _(oc)),功率转换效率(PCE)成功地从4.34%(x = 0)提高到6.24%(x = 4%),而V _(oc ,def)从915降至848 mV。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号