Low-temperature solution-processed vanadium oxide as hole transport layer for efficient and stable perovskite solar cells

被引：43

作者：

Guo, Qiang ^{[1
]}

Wang, Chenyun ^{[1
]}

Li, Jinyan ^{[1
]}

Bai, Yiming ^{[1
]}

Wang, Fuzhi ^{[1
]}

Liu, Lin ^{[1
]}

Zhang, Bing ^{[1
]}

Hayat, Tasawar ^{[2
,3
]}

Alsaedi, Ahmed ^{[3
]}

Tan, Zhan'ao ^{[1
]}

机构：

[1] North China Elect Power Univ, State Key Lab Alternate Elect Power Syst Renewabl, Beijing 102206, Peoples R China

[2] Quiad I Azam Univ, Dept Math, Islamabad 45320, Pakistan

[3] King Abdulaziz Univ, NAAM Res Grp, Fac Sci, Jeddah 21589, Saudi Arabia

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2018年 / 20卷 / 33期

基金：

中国国家自然科学基金;

关键词：

HIGH-PERFORMANCE; THIN-FILM; CHARGE EXTRACTION; HIGHLY EFFICIENT; METAL-OXIDES; SPECTROSCOPY; OXIDATION; CATALYSTS; ELECTRODE; PEDOTPSS;

D O I：

10.1039/c8cp03223h

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In recent years, great progress has been achieved in improving the power conversion efficiency (PCE) of organic-inorganic hybrid perovskite solar cells (PSCs), but the stability of PSCs is still an obstacle in their commercialization due to the limitation of efficient and stable hole transport materials. Herein, we demonstrate an alcohol-solution-based low-temperature-processed vanadium oxide (VOx) hole transport layer (HTL) for planar heterojunction PSCs. The good crystallinity and morphology of CH3NH3PbI3 grown on this amorphous VOx film is investigated by scanning electron microscopy (SEM) and X-ray diffraction (XRD) techniques. Due to the suitable and matching energy levels of VOx and CH3NH3PbI3, the holes generated in CH3NH3PbI3 can efficiently transfer to VOx HTL. Furthermore, VOx-HTL-based PSCs yield a PCE value of 14.5% with better stability in comparison with PEDOT:PSS-HTL-based PSCs. These results reveal that the low-temperature-processed VOx films can be employed as the HTL for efficient and stable PSCs.

引用

页码：21746 / 21754

页数：9

共 44 条

[41] Stable high-performance hybrid perovskite solar cells with ultrathin polythiophene as hole-transporting layer [J].