Amorphous Tin Oxide as a Low-Temperature -Processed Electron Transport Layer for Organic and Hybrid Perovskite Solar Cells

被引：174

作者：

Barbe, Jeremy ^{[1
]}

Tietze, Max L. ^{[1
]}

Neophytou, Marios ^{[1
]}

Murali, Banavoth ^{[1
]}

Alarousu, Erkki ^{[1
]}

El Labban, Abdulrahman ^{[1
]}

Abulikemu, Mutalifu ^{[1
]}

Yue, Wan ^{[1
]}

Mohammed, Omar F. ^{[1
]}

McCulloch, Iain ^{[1
]}

Amassian, Aram ^{[1
]}

Del Gobbo, Silvan ^{[1
]}

机构：

[1] King Abdullah Univ Sci & Technol, KAUST Solar Ctr, Phys Sci & Engn Div, Thuwal 239556900, Saudi Arabia

来源：

ACS APPLIED MATERIALS & INTERFACES | 2017年 / 9卷 / 13期

关键词：

perovskite solar cells; tin oxide electron-transport layer; chemical bath deposition; ultraviolet photoelectron spectroscopy; organic solar cells; EFFICIENT; HYSTERESIS; INTERFACE; ORIGIN; SNO2; INSTABILITY; DEPOSITION; FILMS;

D O I：

10.1021/acsami.6b13675

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Chemical bath deposition (CBD) of tin oxide (SnO2) thin films as an electron -transport layer (ETL) in a planar-heterojunction n i p organohalide lead perovskite and organic bulk-heterojunction (BHJ) solar cells is reported. The amorphous SnO2 (a-SnO2) films are grown from a nontoxic aqueous bath of tin chloride at a very low temperature (55 degrees C) and do not require postannealing treatment to work very effectively as an ETL in a planar-heterojunction n i p organohalide lead perovskite or organic BHJ solar cells, in lieu of the commonly used ETL materials titanium oxide (TiO2) and zinc oxide (ZnO), respectively. Ultraviolet photoelectron spectroscopy measurements on the glass/indium tin oxide (ITO)/Sn02/methylammonium (MAPbI(3))/2,2',7,7'-tetralds(N,N-di-p-methoxyphenylamine)-9,9'-spirobifluorene device stack indicate that extraction of photogenerated electrons is facilitated by a perfect alignment of the conduction bands at the Sn02/MAPbI3 interface, while the deep valence band of SnO2 ensures strong hole -blocking properties. Despite exhibiting very low electron mobility, the excellent interfacial energetics combined with high transparency (E-gap,E-optical > 4 eV) and uniform substrate coverage make the a= SnO2 ETL prepared by CBD an excellent candidate for the potentially low-cost and large-scale fabrication of organohalide lead perovskite and organic photovoltaics.

引用

页码：11828 / 11836

页数：9

共 45 条

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