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Carrier lifetimes and polaronic mass enhancement in the hybrid halide perovskite CH3NH3PbI3 from multiphonon Fröhlich coupling

Abstract:

We elucidate the nature of the electron-phonon interaction in the archetypal hybrid perovskite CH3NH3PbI3 using ab initio many-body calculations and an exactly solvable model. We demonstrate that electrons and holes near the band edges primarily interact with three distinct groups of longitudinal-optical vibrations, in order of importance: the stretching of the Pb—I bond, the bending of the Pb—I—Pb bonds, and the libration of the organic cations. These pol...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1103/physrevlett.121.086402

Authors


More by this author
Institution:
University of Oxford
Division:
MPLS Division
Department:
Materials
Role:
Author
ORCID:
0000-0003-3198-0497
More by this author
Institution:
University of Oxford
Division:
MPLS Division
Department:
Materials
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Materials
Oxford college:
Wolfson College
Role:
Author
Publisher:
American Physical Society Publisher's website
Journal:
Physical Review Letters Journal website
Volume:
121
Issue:
8
Article number:
086402
Publication date:
2018-08-23
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
Pmid:
30192620
Source identifiers:
911930
Language:
English
Subjects:
Pubs id:
pubs:911930
UUID:
uuid:8e92aeb9-4c8b-414e-92d0-93ce7890ede6
Local pid:
pubs:911930
Deposit date:
2019-03-25

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