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Title: Effect of Cation Rotation on Charge Dynamics in Hybrid Lead Halide Perovskites

Abstract

Organic-inorganic hybrid halide perovskites are a promising class of materials for photovoltaic application with reported power efficiencies over similar to 22%. However, not much is known about the influence of the organic dipole rotation and phase transitions on charge carrier dynamics. Here, we report substantial changes in mobility and lifetime of charge carriers in CH 3NH 3PbI 3 after the low-temperature tetragonal (beta) to orthorhombic (gamma) phase transition. By using microwave conductivity measurements, we observed that the mobility and lifetime of ionized charge carriers increase as the temperature decreases and a sudden increment is seen after the beta-gamma phase transition. For CH 3NH 3PbI 3, the mobility and the half-lifetime increase by a factor of 36 compared with the values before the beta-gamma phase transition. We attribute the considerable change in the dynamics at low temperature to the decrease of the inherent dynamic disorder of the organic cation (CH 3NH 3+) inside the perovskite crystal structure.

Authors:
; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1330858
DOE Contract Number:
AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Physical Chemistry. C; Journal Volume: 120; Journal Issue: 30
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Gélvez-Rueda, María C., Cao, Duyen H., Patwardhan, Sameer, Renaud, Nicolas, Stoumpos, Constantinos C., Schatz, George C., Hupp, Joseph T., Farha, Omar K., Savenije, Tom J., Kanatzidis, Mercouri G., and Grozema, Ferdinand C.. Effect of Cation Rotation on Charge Dynamics in Hybrid Lead Halide Perovskites. United States: N. p., 2016. Web. doi:10.1021/acs.jpcc.6b06722.
Gélvez-Rueda, María C., Cao, Duyen H., Patwardhan, Sameer, Renaud, Nicolas, Stoumpos, Constantinos C., Schatz, George C., Hupp, Joseph T., Farha, Omar K., Savenije, Tom J., Kanatzidis, Mercouri G., & Grozema, Ferdinand C.. Effect of Cation Rotation on Charge Dynamics in Hybrid Lead Halide Perovskites. United States. doi:10.1021/acs.jpcc.6b06722.
Gélvez-Rueda, María C., Cao, Duyen H., Patwardhan, Sameer, Renaud, Nicolas, Stoumpos, Constantinos C., Schatz, George C., Hupp, Joseph T., Farha, Omar K., Savenije, Tom J., Kanatzidis, Mercouri G., and Grozema, Ferdinand C.. Thu . "Effect of Cation Rotation on Charge Dynamics in Hybrid Lead Halide Perovskites". United States. doi:10.1021/acs.jpcc.6b06722.
@article{osti_1330858,
title = {Effect of Cation Rotation on Charge Dynamics in Hybrid Lead Halide Perovskites},
author = {Gélvez-Rueda, María C. and Cao, Duyen H. and Patwardhan, Sameer and Renaud, Nicolas and Stoumpos, Constantinos C. and Schatz, George C. and Hupp, Joseph T. and Farha, Omar K. and Savenije, Tom J. and Kanatzidis, Mercouri G. and Grozema, Ferdinand C.},
abstractNote = {Organic-inorganic hybrid halide perovskites are a promising class of materials for photovoltaic application with reported power efficiencies over similar to 22%. However, not much is known about the influence of the organic dipole rotation and phase transitions on charge carrier dynamics. Here, we report substantial changes in mobility and lifetime of charge carriers in CH3NH3PbI3 after the low-temperature tetragonal (beta) to orthorhombic (gamma) phase transition. By using microwave conductivity measurements, we observed that the mobility and lifetime of ionized charge carriers increase as the temperature decreases and a sudden increment is seen after the beta-gamma phase transition. For CH3NH3PbI3, the mobility and the half-lifetime increase by a factor of 36 compared with the values before the beta-gamma phase transition. We attribute the considerable change in the dynamics at low temperature to the decrease of the inherent dynamic disorder of the organic cation (CH3NH3+) inside the perovskite crystal structure.},
doi = {10.1021/acs.jpcc.6b06722},
journal = {Journal of Physical Chemistry. C},
number = 30,
volume = 120,
place = {United States},
year = {Thu Aug 04 00:00:00 EDT 2016},
month = {Thu Aug 04 00:00:00 EDT 2016}
}