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Perovskite quantum dot photovoltaic materials beyond the reach of thin films: Full-range tuning of a-site cation composition

Abstract:

We present a cation-exchange approach for tunable A-site alloys of cesium (Cs+) and formamidinium (FA+) lead triiodide perovskite nanocrystals that enables the formation of compositions spanning the complete range of Cs1–xFAxPbI3, unlike thin-film alloys or the direct synthesis of alloyed perovskite nanocrystals. These materials show bright and finely tunable emission in the red and near-infrared range between 650 and 800 nm. The activation energy for the miscibility between Cs+ and FA+ is me...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1021/acsnano.8b05555

Authors


Hazarika, A More by this author
Gaulding, EA More by this author
Christians, JA More by this author
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Grant:
Operational Energy Capability Improvement Fund
Publisher:
American Chemical Society Publisher's website
Journal:
ACS Nano Journal website
Volume:
12
Issue:
10
Pages:
10327–10337
Publication date:
2018-09-25
Acceptance date:
2018-09-20
DOI:
EISSN:
1936-086X
ISSN:
1936-0851
Pubs id:
pubs:921864
URN:
uri:97127f26-ec05-439e-8284-38d05b3a341b
UUID:
uuid:97127f26-ec05-439e-8284-38d05b3a341b
Local pid:
pubs:921864

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