Hybrid Perovskite Phase Transition and Its Ionic, Electrical and Optical Properties
Abstract
Hybrid perovskite solar cells (PSCs) under normal operation will reach a temperature above ~ 60 °C, across the tetragonal-cubic structural phase transition of methylammonium lead iodide (MAPbI 3). Whether the structural phase transition could result in dramatic changes of ionic, electrical and optical properties that may further impact the PSC performances should be studied. Herein, we report a structural phase transition temperature of MAPbI 3thin film at ~ 55 °C, but a striking contrast occurred at ~ 45 °C in the ionic and electrical properties of MAPbI 3due to a change of the ion activation energy from 0.7 eV to 0.5 eV. The optical properties exhibited no sharp transition except for the steady increase of the bandgap with temperature. It was also observed that the activation energy for ionic migration steadily increased with increased grain sizes, and reduction of the grain boundary density reduced the ionic migration.
- 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:
- 1422875
- Report Number(s):
- NREL/JA-5900-70993
Journal ID: ISSN 2059-8521; applab
- DOE Contract Number:
- AC36-08GO28308
- Resource Type:
- Journal Article
- Journal Name:
- MRS Advances
- Additional Journal Information:
- Journal Volume: 2; Journal Issue: 53; Journal ID: ISSN 2059-8521
- Publisher:
- Materials Research Society (MRS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 14 SOLAR ENERGY; 36 MATERIALS SCIENCE; perovskite solar cells; phase transition; methylammonium lead iodide
Citation Formats
Hoque, Md Nadim Ferdous, Islam, Nazifah, Zhu, Kai, and Fan, Zhaoyang. Hybrid Perovskite Phase Transition and Its Ionic, Electrical and Optical Properties. United States: N. p., 2017.
Web. doi:10.1557/adv.2017.423.
Hoque, Md Nadim Ferdous, Islam, Nazifah, Zhu, Kai, & Fan, Zhaoyang. Hybrid Perovskite Phase Transition and Its Ionic, Electrical and Optical Properties. United States. https://doi.org/10.1557/adv.2017.423
Hoque, Md Nadim Ferdous, Islam, Nazifah, Zhu, Kai, and Fan, Zhaoyang. Sun .
"Hybrid Perovskite Phase Transition and Its Ionic, Electrical and Optical Properties". United States. https://doi.org/10.1557/adv.2017.423.
@article{osti_1422875,
title = {Hybrid Perovskite Phase Transition and Its Ionic, Electrical and Optical Properties},
author = {Hoque, Md Nadim Ferdous and Islam, Nazifah and Zhu, Kai and Fan, Zhaoyang},
abstractNote = {Hybrid perovskite solar cells (PSCs) under normal operation will reach a temperature above ~ 60 °C, across the tetragonal-cubic structural phase transition of methylammonium lead iodide (MAPbI3). Whether the structural phase transition could result in dramatic changes of ionic, electrical and optical properties that may further impact the PSC performances should be studied. Herein, we report a structural phase transition temperature of MAPbI3thin film at ~ 55 °C, but a striking contrast occurred at ~ 45 °C in the ionic and electrical properties of MAPbI3due to a change of the ion activation energy from 0.7 eV to 0.5 eV. The optical properties exhibited no sharp transition except for the steady increase of the bandgap with temperature. It was also observed that the activation energy for ionic migration steadily increased with increased grain sizes, and reduction of the grain boundary density reduced the ionic migration.},
doi = {10.1557/adv.2017.423},
url = {https://www.osti.gov/biblio/1422875},
journal = {MRS Advances},
issn = {2059-8521},
number = 53,
volume = 2,
place = {United States},
year = {2017},
month = {1}
}
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