Effect of cation rotation on charge dynamics in hybrid lead halide perovskites

María C. Gélvez-Rueda, Duyen H. Cao, Sameer Patwardhan, Nicolas Renaud, Constantinos C. Stoumpos, George C Schatz, Joseph T Hupp, Omar K. Farha, Tom J. Savenije, Mercouri G Kanatzidis, Ferdinand C. Grozema

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Organic-inorganic hybrid halide perovskites are a promising class of materials for photovoltaic application with reported power efficiencies over ∼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 (β) to orthorhombic (γ) 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 β-γ phase transition. For CH3NH3PbI3, the mobility and the half-lifetime increase by a factor of 3-6 compared with the values before the β-γ 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.

Original languageEnglish
Pages (from-to)16577-16585
Number of pages9
JournalJournal of Physical Chemistry C
Volume120
Issue number30
DOIs
Publication statusPublished - Aug 4 2016

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perovskites
halides
Cations
Lead
Phase transitions
Positive ions
Charge carriers
cations
charge carriers
life (durability)
power efficiency
Perovskite
Temperature
Crystal structure
Microwaves
disorders
dipoles
microwaves
conductivity
crystal structure

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Energy(all)

Cite this

Gélvez-Rueda, M. C., Cao, D. H., Patwardhan, S., Renaud, N., Stoumpos, C. C., Schatz, G. C., ... Grozema, F. C. (2016). Effect of cation rotation on charge dynamics in hybrid lead halide perovskites. Journal of Physical Chemistry C, 120(30), 16577-16585. https://doi.org/10.1021/acs.jpcc.6b06722

Effect of cation rotation on charge dynamics in hybrid lead halide perovskites. / 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.

In: Journal of Physical Chemistry C, Vol. 120, No. 30, 04.08.2016, p. 16577-16585.

Research output: Contribution to journalArticle

Gélvez-Rueda, MC, Cao, DH, Patwardhan, S, Renaud, N, Stoumpos, CC, Schatz, GC, Hupp, JT, Farha, OK, Savenije, TJ, Kanatzidis, MG & Grozema, FC 2016, 'Effect of cation rotation on charge dynamics in hybrid lead halide perovskites', Journal of Physical Chemistry C, vol. 120, no. 30, pp. 16577-16585. https://doi.org/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. In: Journal of Physical Chemistry C. 2016 ; Vol. 120, No. 30. pp. 16577-16585.
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AB - Organic-inorganic hybrid halide perovskites are a promising class of materials for photovoltaic application with reported power efficiencies over ∼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 (β) to orthorhombic (γ) 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 β-γ phase transition. For CH3NH3PbI3, the mobility and the half-lifetime increase by a factor of 3-6 compared with the values before the β-γ 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.

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