Improved Morphology Control Using a Modified Two-Step Method for Efficient Perovskite Solar Cells

被引：61

作者：

Bi, Dongqin ^{[1
]}

El-Zohry, Ahmed M. ^{[1
]}

Hagfeldt, Anders ^{[1
,2
]}

Boschloo, Gerrit ^{[1
]}

机构：

[1] Uppsala Univ, Dept Chem, Angstrom Lab, SE-75120 Uppsala, Sweden

[2] Sungkyunkwan Univ, Sch Chem Engn, Suwon 440746, South Korea

来源：

ACS APPLIED MATERIALS & INTERFACES | 2014年 / 6卷 / 21期

基金：

瑞典研究理事会;

关键词：

photovoltaic; methylammonium lead(ii) triiodide; solution-processed semiconductor; mesoporous TiO2; dichloromethane; emission lifetime; QUANTUM-DOT SPIN; RECOMBINATION; ENTANGLEMENT; CH3NH3PBI3; DEPOSITION; LENGTHS; WELL;

D O I：

10.1021/am504320h

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A two-step wet chemical synthesis method for methylammonium lead(II) triiodide (CH3NH3PbI3) perovskite is further developed for the preparation of highly reproducible solar cells, with the following structure: fluorine-doped tin oxide (FTO)/TiO2 (compact)/TiO2 (mesoporous)/CH3NH3PbI3/spiro-OMeTAD/Ag. The morphology of the perovskite layer could be controlled by careful variation of the processing conditions. Specifically, by modifying the drying process and inclusion of a dichloromethane treatment, more uniform films could be prepared, with longer emission lifetime in the perovskite material and longer electron lifetime in solar cell devices, as well as faster electron transport and enhanced charge collection at the selective contacts. Solar cell efficiencies up to 13.5% were obtained.

引用

页码：18751 / 18757

页数：7

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