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Title: Fabrication of compact and stable perovskite films with optimized precursor composition in the fast-growing procedure

Abstract

The fast-growing procedure (FGP) provides a simple, high-yield and lead (Pb)-release free method to prepare perovskite films. In the FGP, the ultra-dilute perovskite precursor solution is drop-cast onto a hot (~240 degrees C) substrate, where a perovskite film grows immediately accompanied by the rapid evaporation of the host solvent. In this process, all the raw materials in the precursor solution are deposited into the final perovskite film. The potential pollution caused by Pb can be significantly reduced. Properties of the FGP-processed perovskite films can be modulated by the precursor composition. While CH3NH3Cl (MACl) affects the crystallization process and leads to full surface coverage, CH(NH2)2I (FAI) enhances the thermal stability of the film. Based on the optimized precursor composition of PbI2(1-x)FAI xMACl, x=0.75, FGP-processed planar heterojunction perovskite solar cells exhibit power conversion efficiencies (PCEs) exceeding 15% with suppressed hysteresis and excellent reproducibility.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1432186
Report Number(s):
NREL/JA-5900-71265
Journal ID: ISSN 2095-8226
DOE Contract Number:  
AC36-08GO28308
Resource Type:
Journal Article
Journal Name:
Science China Materials
Additional Journal Information:
Journal Volume: 60; Journal Issue: 7; Journal ID: ISSN 2095-8226
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; fast-growing procedure; lead-release free; precursor composition; surface coverage; thermal stability

Citation Formats

Liu, Tanghao, Zhou, Yuanyuan, Hu, Qin, Chen, Ke, Zhang, Yifei, Yang, Wenqiang, Wu, Jiang, Ye, Fengjun, Luo, Deying, Zhu, Kai, Padture, Nitin P., Liu, Feng, Russell, Thomas, Zhu, Rui, and Gong, Qihuang. Fabrication of compact and stable perovskite films with optimized precursor composition in the fast-growing procedure. United States: N. p., 2017. Web. doi:10.1007/s40843-017-9044-y.
Liu, Tanghao, Zhou, Yuanyuan, Hu, Qin, Chen, Ke, Zhang, Yifei, Yang, Wenqiang, Wu, Jiang, Ye, Fengjun, Luo, Deying, Zhu, Kai, Padture, Nitin P., Liu, Feng, Russell, Thomas, Zhu, Rui, & Gong, Qihuang. Fabrication of compact and stable perovskite films with optimized precursor composition in the fast-growing procedure. United States. doi:10.1007/s40843-017-9044-y.
Liu, Tanghao, Zhou, Yuanyuan, Hu, Qin, Chen, Ke, Zhang, Yifei, Yang, Wenqiang, Wu, Jiang, Ye, Fengjun, Luo, Deying, Zhu, Kai, Padture, Nitin P., Liu, Feng, Russell, Thomas, Zhu, Rui, and Gong, Qihuang. Fri . "Fabrication of compact and stable perovskite films with optimized precursor composition in the fast-growing procedure". United States. doi:10.1007/s40843-017-9044-y.
@article{osti_1432186,
title = {Fabrication of compact and stable perovskite films with optimized precursor composition in the fast-growing procedure},
author = {Liu, Tanghao and Zhou, Yuanyuan and Hu, Qin and Chen, Ke and Zhang, Yifei and Yang, Wenqiang and Wu, Jiang and Ye, Fengjun and Luo, Deying and Zhu, Kai and Padture, Nitin P. and Liu, Feng and Russell, Thomas and Zhu, Rui and Gong, Qihuang},
abstractNote = {The fast-growing procedure (FGP) provides a simple, high-yield and lead (Pb)-release free method to prepare perovskite films. In the FGP, the ultra-dilute perovskite precursor solution is drop-cast onto a hot (~240 degrees C) substrate, where a perovskite film grows immediately accompanied by the rapid evaporation of the host solvent. In this process, all the raw materials in the precursor solution are deposited into the final perovskite film. The potential pollution caused by Pb can be significantly reduced. Properties of the FGP-processed perovskite films can be modulated by the precursor composition. While CH3NH3Cl (MACl) affects the crystallization process and leads to full surface coverage, CH(NH2)2I (FAI) enhances the thermal stability of the film. Based on the optimized precursor composition of PbI2(1-x)FAI xMACl, x=0.75, FGP-processed planar heterojunction perovskite solar cells exhibit power conversion efficiencies (PCEs) exceeding 15% with suppressed hysteresis and excellent reproducibility.},
doi = {10.1007/s40843-017-9044-y},
journal = {Science China Materials},
issn = {2095-8226},
number = 7,
volume = 60,
place = {United States},
year = {2017},
month = {6}
}

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