Improved light absorption and charge transport for perovskite solar cells with rough interfaces by sequential deposition

被引：172

作者：

Zheng, Lingling ^{[1
,2
]}

Ma, Yingzhuang ^{[1
,2
]}

Chu, Saisai ^{[1
,2
]}

Wang, Shufeng ^{[1
,2
,3
]}

Qu, Bo ^{[1
,2
,3
]}

Xiao, Lixin ^{[1
,2
,3
]}

Chen, Zhijian ^{[1
,2
,3
]}

Gong, Qihuang ^{[1
,2
]}

Wu, Zhaoxin ^{[4
]}

Hou, Xun ^{[4
]}

机构：

[1] Peking Univ, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China

[2] Peking Univ, Dept Phys, Beijing 100871, Peoples R China

[3] New Display Device & Syst Integrat Collaborat Inn, Fuzhou 350002, Peoples R China

[4] Xi An Jiao Tong Univ, Key Lab Photon Technol Informat, Minist Educ,Sch Elect & Informat Engn, Dept Elect Sci & Technol,Key Lab Phys Elect & Dev, Xian 710049, Peoples R China

来源：

NANOSCALE | 2014年 / 6卷 / 14期

基金：

中国国家自然科学基金;

关键词：

HALIDE PEROVSKITE; EFFICIENT; TIO2; MOBILITIES; LENGTHS;

D O I：

10.1039/c4nr01141d

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Recently, highly efficient solar cells based on organic-inorganic perovskites have been intensively reported for developing fabricating methods and device structures. Additional power conversion efficiency should be gained without increasing the thickness and the complexity of the devices to accord with practical applications. In this paper, a rough interface between perovskite and HTM was fabricated in perovskite solar cells to enhance the light scattering effect and improve the charge transport. The parameters related to the morphology have been systematically investigated by sequential deposition. Simultaneous enhancements of short-circuit current and power conversion efficiency were observed in both CH3NH3PbI3 and CH3NH3PbI3-xClx devices containing the rough interface, with power conversion efficiencies of 10.2% and 10.8%, respectively. Our finding provides an efficient and universal way to control the morphology and further optimize perovskite solar cells for devices by sequential deposition with various structures.

引用

页码：8171 / 8176

页数：6

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