Heteroatom effect on linear-shaped dopant-free hole transporting materials for perovskite solar cells

被引：25

作者：

Zhou, Zi'an ^{[1
]}

Zhang, Xianfu ^{[1
]}

Ghadari, Rahim ^{[2
]}

Liu, Xuepeng ^{[1
]}

Wang, Wenjun ^{[1
]}

Ding, Yong ^{[1
]}

Cai, Molang ^{[1
]}

Pan, Jia Hong ^{[1
]}

Dai, Songyuan ^{[1
]}

机构：

[1] North China Elect Power Univ, Beijing Key Lab Novel Thin Film Solar Cells, Beijing 102206, Peoples R China

[2] Univ Tabriz, Fac Chem, Dept Organ & Biochem, Computat Chem Lab, Tabriz 5166616471, Iran

来源：

SOLAR ENERGY | 2021年 / 221卷

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

D-pi-D; D-A-D; Heteroatom effect; Hole transporting materials; Perovskite solar cells; HIGHLY EFFICIENT; PI-LINKER; PERFORMANCE; SUBSTITUTION; DERIVATIVES; STRATEGIES; CARBAZOLE; CORE;

D O I：

10.1016/j.solener.2021.04.034

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

A series of linear-shaped D-pi-D and D-A-D hole transporting materials (HTMs) with different heteroatom-containing bridges, such as furan, thiophene, selenophene, 2,1,3-benzoxadiazole, 2,1,3-benzothiadiazole and 2,1,3-benzoselenadiazole, are designed, prepared and implemented in perovskite solar cells (PSCs). The effect of the variation heteroatom bridge on the photophysical, electrochemical, and the photovoltaic properties in devices are systematically investigated. D-pi-D HTMs exhibit gradually bathochromic spectrum responding along with increasing atomic numbers (from O, S to Se). However, D-A-D molecules exhibit no regular variation trend of photophysical and electrochemical properties. When used in PSCs, the photoelectric conversion efficiency of the devices gradually decreased along with increasing atomic numbers whether D-pi-D or D-A-D HTMs. Unexpectedly, Se-containing molecules show the best hole extraction ability according to photoluminescence study. The relatively low conductivity of Se-based HTMs, resulted from gradually increased dihedral angles between the bridge and the adjacent triphenylamine side arms, may mainly limited the device performance. The results would give some insights for designing novel efficient HTMs for PSCs.

引用

页码：323 / 331

页数：9

共 50 条

[31]

Sathiyan G, 2018, MICRO NANO TECHNOL, P279, DOI 10.1016/B978-0-12-813731-4.00009-6

[32] Recent Advances in Organic Hole Transporting Materials for Perovskite Solar Cells [J].