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Complex refractive index spectrum of CsPbBr3 nanocrystals via the effective medium approximation

Abstract:
We have estimated the intrinsic complex refractive index spectrum of a CsPbBr3 nanocrystal. With various dilute solutions of CsPbBr3 nanocrystals dissolved in toluene, effective refractive indices were measured at two different wavelengths using Michelson interferometry. Given the effective absorption spectrum of the solution, a full spectrum of the effective refractive index was also obtained through the Kramers–Krönig relations. Based on the Maxwell–Garnett model in the effective medium approximation, the real and imaginary spectrum of the complex refractive index was estimated for the CsPbBr3 nanocrystal, and the dominant inaccuracy was attributed to the size inhomogeneity.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.3390/nano15030181

Authors

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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Condensed Matter Physics
Role:
Author
ORCID:
0000-0001-5166-2352
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Role:
Author
ORCID:
0000-0001-7994-7456
More by this author
Role:
Author
ORCID:
0009-0001-8036-4191
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Condensed Matter Physics
Role:
Author
ORCID:
0000-0003-2578-9645


More from this funder
Grant:
RS-2023-00236798 and 2022R1A5A8023404


Publisher:
MDPI
Journal:
Nanomaterials More from this journal
Volume:
15
Issue:
3
Article number:
181
Place of publication:
Switzerland
Publication date:
2025-01-23
Acceptance date:
2025-01-22
DOI:
EISSN:
2079-4991
Pmid:
39940157


Language:
English
Keywords:
Pubs id:
2082249
Local pid:
pubs:2082249
Deposit date:
2025-04-23
ARK identifier:

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