Investigation into the Photoluminescence Red Shift in Cesium Lead Bromide Nanocrystal Superlattices
Baranov, Dmitry LU
; Toso, Stefano
; Imran, Muhammad
and Manna, Liberato
(2019)
In Journal of Physical Chemistry Letters
10(3).
p.655-660
- Abstract
The formation of cesium lead bromide (CsPbBr3 ) nanocrystal superlattices (NC SLs) is accompanied by a red shift in the NC photoluminescence (PL). The values of the PL red shift reported in the literature range from none to 100 meV without unifying explanation of the differences. Using a combination of confocal PL microcopy and steady-state optical spectroscopies we found that an overall PL red shift of 96 meV measured from a macroscopic sample of CsPbBr3 NC SLs has several contributions: 10-15 meV from a red shift in isolated and clean SLs, 30 meV from SLs with impurities of bulklike CsPbBr3 ... (More)
The formation of cesium lead bromide (CsPbBr3 ) nanocrystal superlattices (NC SLs) is accompanied by a red shift in the NC photoluminescence (PL). The values of the PL red shift reported in the literature range from none to 100 meV without unifying explanation of the differences. Using a combination of confocal PL microcopy and steady-state optical spectroscopies we found that an overall PL red shift of 96 meV measured from a macroscopic sample of CsPbBr3 NC SLs has several contributions: 10-15 meV from a red shift in isolated and clean SLs, 30 meV from SLs with impurities of bulklike CsPbBr3 crystals on their surface, and up to 50 meV or more of the red shift coming from a photon propagation effect, specifically self-absorption. In addition, a self-assembly technique for growing micron-sized NC SLs on the surface of perfluorodecalin, an inert perfluorinated liquid and an antisolvent for NCs, is described.
(Less)
- author
- Baranov, Dmitry
LU
; Toso, Stefano
; Imran, Muhammad
and Manna, Liberato
- publishing date
- 2019-02-07
- type
- Contribution to journal
- publication status
- published
- in
- Journal of Physical Chemistry Letters
- volume
- 10
- issue
- 3
- pages
- 6 pages
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- pmid:30676762
- scopus:85061125681
- ISSN
- 1948-7185
- DOI
- 10.1021/acs.jpclett.9b00178
- language
- English
- LU publication?
- no
- additional info
- Publisher Copyright: Copyright © 2019 American Chemical Society.
- id
- 39c1e2d3-35e3-4c59-a85b-2f6485db4f71
- date added to LUP
- 2023-01-17 13:51:36
- date last changed
- 2024-04-18 09:12:03
@article{39c1e2d3-35e3-4c59-a85b-2f6485db4f71,
abstract = {{<p> The formation of cesium lead bromide (CsPbBr<sub>3</sub> ) nanocrystal superlattices (NC SLs) is accompanied by a red shift in the NC photoluminescence (PL). The values of the PL red shift reported in the literature range from none to 100 meV without unifying explanation of the differences. Using a combination of confocal PL microcopy and steady-state optical spectroscopies we found that an overall PL red shift of 96 meV measured from a macroscopic sample of CsPbBr<sub>3</sub> NC SLs has several contributions: 10-15 meV from a red shift in isolated and clean SLs, 30 meV from SLs with impurities of bulklike CsPbBr<sub>3</sub> crystals on their surface, and up to 50 meV or more of the red shift coming from a photon propagation effect, specifically self-absorption. In addition, a self-assembly technique for growing micron-sized NC SLs on the surface of perfluorodecalin, an inert perfluorinated liquid and an antisolvent for NCs, is described.</p>}},
author = {{Baranov, Dmitry and Toso, Stefano and Imran, Muhammad and Manna, Liberato}},
issn = {{1948-7185}},
language = {{eng}},
month = {{02}},
number = {{3}},
pages = {{655--660}},
publisher = {{The American Chemical Society (ACS)}},
series = {{Journal of Physical Chemistry Letters}},
title = {{Investigation into the Photoluminescence Red Shift in Cesium Lead Bromide Nanocrystal Superlattices}},
url = {{http://dx.doi.org/10.1021/acs.jpclett.9b00178}},
doi = {{10.1021/acs.jpclett.9b00178}},
volume = {{10}},
year = {{2019}},
}