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Title: Optical response of mixed methylammonium lead iodide and formamidinium tin iodide perovskite thin films

Abstract

Here, mixed tin (Sn) and lead (Pb) based perovskite thin films have been prepared by solution processing combining methylammonium lead iodide (MAPbI3) and formamidinium tin iodide (FASnI3) precursors. Optical response in the form of complex dielectric function (ε = ε1 + iε2) spectra and absorption coefficient (α) spectra of (FASnI3)1-x(MAPbI3)x based perovskite films have been extracted over a spectral range 0.74 to 5.89 eV using spectroscopic ellipsometry. Absorption band edge energy changes as a function of composition for films including FASnI3, MAPbI3, and mixed x = 0.20, 0.35, 0.40, and 0.6 (FASnI3)1-x(MAPbI3)x perovskites. (FASnI3)0.60(MAPbI3)0.4 is found to have the minimum absorption band edge energy near ~1.2 eV.

Authors:
 [1];  [1]; ORCiD logo [1];  [1]
  1. Univ. of Toledo, Toledo, OH (United States). Dept. of Physics and Astronomy & Wright Center for Photovoltaics Innovation and Commercialization
Publication Date:
Research Org.:
Univ. of Toledo, OH (United States). Dept. of Physics and Astronomy & Wright Center for Photovoltaics Innovation and Commercialization
Sponsoring Org.:
USDOE
OSTI Identifier:
1393254
Alternate Identifier(s):
OSTI ID: 1369482
Grant/Contract Number:  
TECH-09-025; CHE-1230246 DMR-1534586; FOA-0000990
Resource Type:
Accepted Manuscript
Journal Name:
AIP Advances
Additional Journal Information:
Journal Volume: 7; Journal Issue: 7; Journal ID: ISSN 2158-3226
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Ghimire, Kiran, Zhao, Dewei, Yan, Yanfa, and Podraza, Nikolas J. Optical response of mixed methylammonium lead iodide and formamidinium tin iodide perovskite thin films. United States: N. p., 2017. Web. doi:10.1063/1.4994211.
Ghimire, Kiran, Zhao, Dewei, Yan, Yanfa, & Podraza, Nikolas J. Optical response of mixed methylammonium lead iodide and formamidinium tin iodide perovskite thin films. United States. https://doi.org/10.1063/1.4994211
Ghimire, Kiran, Zhao, Dewei, Yan, Yanfa, and Podraza, Nikolas J. Thu . "Optical response of mixed methylammonium lead iodide and formamidinium tin iodide perovskite thin films". United States. https://doi.org/10.1063/1.4994211. https://www.osti.gov/servlets/purl/1393254.
@article{osti_1393254,
title = {Optical response of mixed methylammonium lead iodide and formamidinium tin iodide perovskite thin films},
author = {Ghimire, Kiran and Zhao, Dewei and Yan, Yanfa and Podraza, Nikolas J.},
abstractNote = {Here, mixed tin (Sn) and lead (Pb) based perovskite thin films have been prepared by solution processing combining methylammonium lead iodide (MAPbI3) and formamidinium tin iodide (FASnI3) precursors. Optical response in the form of complex dielectric function (ε = ε1 + iε2) spectra and absorption coefficient (α) spectra of (FASnI3)1-x(MAPbI3)x based perovskite films have been extracted over a spectral range 0.74 to 5.89 eV using spectroscopic ellipsometry. Absorption band edge energy changes as a function of composition for films including FASnI3, MAPbI3, and mixed x = 0.20, 0.35, 0.40, and 0.6 (FASnI3)1-x(MAPbI3)x perovskites. (FASnI3)0.60(MAPbI3)0.4 is found to have the minimum absorption band edge energy near ~1.2 eV.},
doi = {10.1063/1.4994211},
journal = {AIP Advances},
number = 7,
volume = 7,
place = {United States},
year = {Thu Jul 13 00:00:00 EDT 2017},
month = {Thu Jul 13 00:00:00 EDT 2017}
}

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Works referencing / citing this record:

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