Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films

作者： Carolin M. Sutter-Fella*1,2,3, Yanbo Li*1,4, Nicola Cefarin1,5,6, Aya Buckley1,7, Quynh Phuong Ngo8,9, Ali Javey2,3, Ian D. Sharp1, Francesca M. Toma1 1Joint Center for Artificial Photosynthesis, Chemical Sciences Division,Lawrence Berkeley National Laboratory, 2Electrical Engineering and Computer Sciences,University of California, Berkeley, 3Materials Science Division,Lawrence Berkeley National Laboratory, 4Institute of Fundamental and Frontier Sciences,University of Electronic Science and Technology of China, 5Department of Physics, Graduate School of Nanotechnology,University of Trieste, 6TASC Laboratory,IOM-CNR - Istituto Officina dei Materiali, 7Department of Chemistry,University of California, Berkeley, 8Materials Science and Engineering,University of California, Berkeley, 9Joint Center for Artificial Photosynthesis,Lawrence Berkeley National Laboratory

简介：

Overview

This article presents a protocol for synthesizing high-quality, pinhole-free methylammonium lead halide perovskite films for optoelectronic applications. The method is adaptable to various laboratory settings and emphasizes low processing temperatures.

Key Study Components

Area of Science

• Materials Science
• Optoelectronics
• Thin Film Synthesis

Background

• Methylammonium lead halide perovskites are promising materials for solar cells and LEDs.
• High-quality films are essential for device efficiency.
• Standard laboratory equipment can be used for synthesis.
• Low processing temperatures improve accessibility and reproducibility.

Purpose of Study

• To develop a synthesis protocol for homogenous perovskite films.
• To ensure reproducibility across different laboratories.
• To explore the full halide composition space for enhanced optoelectronic properties.

Methods Used

• Preparation of precursor solutions using ethanol and methylamine.
• Utilization of standard laboratory equipment like fume hoods and schlenk lines.
• Stirring and mixing of components to achieve homogeneity.
• Formation of thin films through controlled deposition techniques.

Main Results

• Successful synthesis of pinhole-free perovskite films.
• Demonstrated adaptability of the protocol for various lab settings.
• Achieved high-quality films suitable for optoelectronic applications.
• Validated the use of low processing temperatures in synthesis.

Conclusions

• The developed protocol facilitates the synthesis of high-quality perovskite films.
• It supports reproducibility and adaptability in different research environments.
• This method can enhance the performance of solar cells and other optoelectronic devices.

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