A Two-Step, All Solution Process for Conversion of Lead Sulfide to Methylammonium Lead Iodide Perovskite Thin Films

Maayan Perez; Sa'ar Shor Peled; Tzvi Templeman; Anna Osherov; Vladimir Bulovic; Eugene A. Katz; Yuval Golan

doi:10.1016/j.tsf.2020.138367

A Two-Step, All Solution Process for Conversion of Lead Sulfide to Methylammonium Lead Iodide Perovskite Thin Films

Maayan Perez, Sa'ar Shor Peled, Tzvi Templeman, Anna Osherov, Vladimir Bulovic, Eugene A. Katz, Yuval Golan

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

We present an all solution, two-step method for the production of methylammonium lead iondide (MAPbI₃) perovskite thin films. Initially, PbS thin films were deposited on GaAs substrates. Subsequently, PbS films were transformed into PbI₂ following treatment with polyiodide solutions. In a second conversion step, MAPbI₃ films were obtained by reacting the films with methylammonium iodide solutions. The effect of the solvent on lead iodide morphology and consequently on MAPbI₃ morphology was demonstrated. Conversion rate was slower with increasing solvent polarity. Optimization of conversion parameters is crucial for reproducibly obtaining continuous and adhesive perovskite films. Photoluminescence measurements showed that chemical treatments can substantially enhance light emission from the films. This route for all-solution-processed perovskites enables control over film morphology while maintaining a simple and low-cost process.

Original language	English
Article number	138367
Journal	Thin Solid Films
Volume	714
DOIs	https://doi.org/10.1016/j.tsf.2020.138367
State	Published - 30 Nov 2020

Keywords

Photoluminescence
lead sulfide
methylammonium lead iodide
microstructure
perovskites
solvent polarity

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Surfaces and Interfaces
Surfaces, Coatings and Films
Metals and Alloys
Materials Chemistry

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.tsf.2020.138367

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@article{b38e9730aa8b45f5919ddb950ecefca6,

title = "A Two-Step, All Solution Process for Conversion of Lead Sulfide to Methylammonium Lead Iodide Perovskite Thin Films",

abstract = "We present an all solution, two-step method for the production of methylammonium lead iondide (MAPbI3) perovskite thin films. Initially, PbS thin films were deposited on GaAs substrates. Subsequently, PbS films were transformed into PbI2 following treatment with polyiodide solutions. In a second conversion step, MAPbI3 films were obtained by reacting the films with methylammonium iodide solutions. The effect of the solvent on lead iodide morphology and consequently on MAPbI3 morphology was demonstrated. Conversion rate was slower with increasing solvent polarity. Optimization of conversion parameters is crucial for reproducibly obtaining continuous and adhesive perovskite films. Photoluminescence measurements showed that chemical treatments can substantially enhance light emission from the films. This route for all-solution-processed perovskites enables control over film morphology while maintaining a simple and low-cost process.",

keywords = "Photoluminescence, lead sulfide, methylammonium lead iodide, microstructure, perovskites, solvent polarity",

author = "Maayan Perez and Peled, {Sa'ar Shor} and Tzvi Templeman and Anna Osherov and Vladimir Bulovic and Katz, {Eugene A.} and Yuval Golan",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

year = "2020",

month = nov,

day = "30",

doi = "10.1016/j.tsf.2020.138367",

language = "English",

volume = "714",

journal = "Thin Solid Films",

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T1 - A Two-Step, All Solution Process for Conversion of Lead Sulfide to Methylammonium Lead Iodide Perovskite Thin Films

AU - Perez, Maayan

AU - Peled, Sa'ar Shor

AU - Templeman, Tzvi

AU - Osherov, Anna

AU - Bulovic, Vladimir

AU - Katz, Eugene A.

AU - Golan, Yuval

PY - 2020/11/30

Y1 - 2020/11/30

N2 - We present an all solution, two-step method for the production of methylammonium lead iondide (MAPbI3) perovskite thin films. Initially, PbS thin films were deposited on GaAs substrates. Subsequently, PbS films were transformed into PbI2 following treatment with polyiodide solutions. In a second conversion step, MAPbI3 films were obtained by reacting the films with methylammonium iodide solutions. The effect of the solvent on lead iodide morphology and consequently on MAPbI3 morphology was demonstrated. Conversion rate was slower with increasing solvent polarity. Optimization of conversion parameters is crucial for reproducibly obtaining continuous and adhesive perovskite films. Photoluminescence measurements showed that chemical treatments can substantially enhance light emission from the films. This route for all-solution-processed perovskites enables control over film morphology while maintaining a simple and low-cost process.

AB - We present an all solution, two-step method for the production of methylammonium lead iondide (MAPbI3) perovskite thin films. Initially, PbS thin films were deposited on GaAs substrates. Subsequently, PbS films were transformed into PbI2 following treatment with polyiodide solutions. In a second conversion step, MAPbI3 films were obtained by reacting the films with methylammonium iodide solutions. The effect of the solvent on lead iodide morphology and consequently on MAPbI3 morphology was demonstrated. Conversion rate was slower with increasing solvent polarity. Optimization of conversion parameters is crucial for reproducibly obtaining continuous and adhesive perovskite films. Photoluminescence measurements showed that chemical treatments can substantially enhance light emission from the films. This route for all-solution-processed perovskites enables control over film morphology while maintaining a simple and low-cost process.

KW - Photoluminescence

KW - lead sulfide

KW - methylammonium lead iodide

KW - microstructure

KW - perovskites

KW - solvent polarity

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U2 - 10.1016/j.tsf.2020.138367

DO - 10.1016/j.tsf.2020.138367

M3 - Article

AN - SCOPUS:85092229081

SN - 0040-6090

VL - 714

JO - Thin Solid Films

JF - Thin Solid Films

M1 - 138367

ER -

A Two-Step, All Solution Process for Conversion of Lead Sulfide to Methylammonium Lead Iodide Perovskite Thin Films

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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