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Resonant energy transfer properties of perovskite nanocrystals

Resonant energy transfer properties of perovskite nanocrystals
Resonant energy transfer properties of perovskite nanocrystals

Perovskite nanocrystals of the form FAPbBr3 display significant promise in the field of optoelectronics. In particular, these nanocrystals could bridge the 'green gap' of LED technology, and also serve to down-convert ultraviolet light for harvesting using silicon-based photovoltaic cells. To remain competitive with traditional devices, optimising the energy transfer between the nanocrystal and the device is crucial, however very little investigation has been performed into this subject. Here, we characterise the energy transfer dynamics of FAPbBr3 nanocrystals on a silicon substrate using time resolved photoluminescence. We also use deposited 'spacer layers' to vary the displacement of the nanocrystals from the silicon in order to observe the effect on the energy-transfer dynamics. We find that the overall photo luminescent lifetime increases when reducing the distance between between the nanocrystals and the silicon layer, which runs counter to the expected behaviour. This suggests that the presence of an optically-active substrate suppresses photo luminescent lifetime and, further, suggests that nanocrystal-to-nanocrystal transfer is highly efficient.

Down-shifting, Nanocrystals, Perovskite, PVs, Resonant energy transfer
SPIE
Shaw, Peter J.
dcb6c9af-bf38-4dfe-8395-8aeac2ad5cc7
Bailey, Christopher G.
5dc8d026-09d8-4dd5-aef2-c4edf83deb8f
Piana, Giacomo
26ddb373-9efe-43c4-a826-4f17f532d521
Mercier, Thomas M.
48bf8bb9-2952-41f6-8153-354763a06edd
Kanaras, Antonios G.
667ecfdc-7647-4bd8-be03-a47bf32504c7
Lagoudakis, Pavlos G.
ea50c228-f006-4edf-8459-60015d961bbf
Charlton, Martin D.B.
fcf86ab0-8f34-411a-b576-4f684e51e274
Huffaker, Diana L.
Eisele, Holger
Shaw, Peter J.
dcb6c9af-bf38-4dfe-8395-8aeac2ad5cc7
Bailey, Christopher G.
5dc8d026-09d8-4dd5-aef2-c4edf83deb8f
Piana, Giacomo
26ddb373-9efe-43c4-a826-4f17f532d521
Mercier, Thomas M.
48bf8bb9-2952-41f6-8153-354763a06edd
Kanaras, Antonios G.
667ecfdc-7647-4bd8-be03-a47bf32504c7
Lagoudakis, Pavlos G.
ea50c228-f006-4edf-8459-60015d961bbf
Charlton, Martin D.B.
fcf86ab0-8f34-411a-b576-4f684e51e274
Huffaker, Diana L.
Eisele, Holger

Shaw, Peter J., Bailey, Christopher G., Piana, Giacomo, Mercier, Thomas M., Kanaras, Antonios G., Lagoudakis, Pavlos G. and Charlton, Martin D.B. (2020) Resonant energy transfer properties of perovskite nanocrystals. Huffaker, Diana L. and Eisele, Holger (eds.) In Quantum Dots, Nanostructures, and Quantum Materials: Growth, Characterization, and Modeling XVII. vol. 11291, SPIE.. (doi:10.1117/12.2544187).

Record type: Conference or Workshop Item (Paper)

Abstract

Perovskite nanocrystals of the form FAPbBr3 display significant promise in the field of optoelectronics. In particular, these nanocrystals could bridge the 'green gap' of LED technology, and also serve to down-convert ultraviolet light for harvesting using silicon-based photovoltaic cells. To remain competitive with traditional devices, optimising the energy transfer between the nanocrystal and the device is crucial, however very little investigation has been performed into this subject. Here, we characterise the energy transfer dynamics of FAPbBr3 nanocrystals on a silicon substrate using time resolved photoluminescence. We also use deposited 'spacer layers' to vary the displacement of the nanocrystals from the silicon in order to observe the effect on the energy-transfer dynamics. We find that the overall photo luminescent lifetime increases when reducing the distance between between the nanocrystals and the silicon layer, which runs counter to the expected behaviour. This suggests that the presence of an optically-active substrate suppresses photo luminescent lifetime and, further, suggests that nanocrystal-to-nanocrystal transfer is highly efficient.

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More information

e-pub ahead of print date: 2 March 2020
Published date: 2020
Venue - Dates: Quantum Dots, Nanostructures, and Quantum Materials: Growth, Characterization, and Modeling XVII 2020, United States, 2020-02-05
Keywords: Down-shifting, Nanocrystals, Perovskite, PVs, Resonant energy transfer

Identifiers

Local EPrints ID: 443853
URI: http://eprints.soton.ac.uk/id/eprint/443853
PURE UUID: b6e7e6c7-1719-48ff-a78c-e9a602b18615
ORCID for Peter J. Shaw: ORCID iD orcid.org/0000-0001-9044-1069
ORCID for Christopher G. Bailey: ORCID iD orcid.org/0000-0001-6593-1381
ORCID for Antonios G. Kanaras: ORCID iD orcid.org/0000-0002-9847-6706

Catalogue record

Date deposited: 15 Sep 2020 16:30
Last modified: 16 Sep 2020 01:44

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Contributors

Author: Peter J. Shaw ORCID iD
Author: Christopher G. Bailey ORCID iD
Author: Giacomo Piana
Author: Thomas M. Mercier
Author: Martin D.B. Charlton
Editor: Diana L. Huffaker
Editor: Holger Eisele

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