Improving the efficiency of organic photovoltaic cells by introducing an ultrathin modification layer with a strong dipole moment

被引：0
|
作者：
FU GuangSheng 1
2 China Lucky Film Corporation
机构：
来源：
Science Bulletin | 2012年 / 14期
关键词：
solar cell; modification layer; work function; photovoltaics;
D O I：
暂无
中图分类号：
TM914.4 [太阳能电池];
学科分类号：
080502 ;
摘要：
A method to improve the efficiency of organic photovoltaic cells through inclusion of an ultrathin modification layer of Al2O3 or LiF sandwiched between poly(3,4-ethylenedioxythiophene)-polystyrene sulfonic acid(PEDOT:PSS) and indium tin oxide layers is developed.Because of the strong dipole moments of LiF and Al2O3,either can enhance the built-in electric field,which increases the probability of the carriers reaching the corresponding electrode.In addition,the low work function of PEDOT:PSS can decrease the energy barrier for carrier transmission.A 21.7% improvement in the power conversion efficiency of experimental devices was achieved,mainly because the short circuit current was enhanced by almost 30%.
引用
收藏
页码：1655 / 1658
页数：4
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