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Impact of the organic cation on the optoelectronic properties of formamidinium lead triiodide

Abstract:

Metal halide perovskites have proven to be excellent light-harvesting materials in photovoltaic devices whose efficiencies are rapidly improving. Here, we examine the temperature-dependent photon absorption, exciton binding energy, and band gap of FAPbI3 (thin film) and find remarkably different behavior across the β–γ phase transition compared with MAPbI3. While MAPbI3 has shown abrupt changes in the band gap and exciton binding energy, values for FAPbI3 vary smoothly over a range of 100–160...

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Publication status:
Published
Peer review status:
Peer reviewed
Version:
Accepted Manuscript

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Publisher copy:
10.1021/acs.jpclett.8b01628

Authors


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Institution:
University of Oxford
Division:
MPLS Division
Department:
Physics; Condensed Matter Physics
More by this author
Institution:
University of Oxford
Division:
MPLS Division
Department:
Physics; Condensed Matter Physics
More by this author
Institution:
University of Oxford
Division:
MPLS Division
Department:
Physics; Condensed Matter Physics
More by this author
Institution:
University of Oxford
Division:
MPLS Division
Department:
Physics; Condensed Matter Physics
More by this author
Institution:
University of Oxford
Division:
MPLS Division
Department:
Physics; Particle Physics
Expand authors...
Publisher:
American Chemical Society Publisher's website
Journal:
Journal of Physical Chemistry Letters Journal website
Volume:
9
Issue:
16
Pages:
4502–4511
Publication date:
2018-07-23
Acceptance date:
2018-07-23
DOI:
ISSN:
1948-7185
Pubs id:
pubs:891275
URN:
uri:9da3bbdb-974f-4362-8eb5-f17bd8ebbd79
UUID:
uuid:9da3bbdb-974f-4362-8eb5-f17bd8ebbd79
Local pid:
pubs:891275

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