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Exciton effects in perovskite nanocrystals

Exciton effects in perovskite nanocrystals
Exciton effects in perovskite nanocrystals

Nanocrystals (NCs) of perovskite materials have recently attracted great research interest because of their outstanding properties for optoelectronic applications, as evidenced by the increasing number of publications on laboratory scale devices. However, in order to achieve the commercial realisation of these devices, an in-depth understanding of the charge dynamics and photo-physics in these novel materials is required. These dynamics are affected by material composition but also by their size and morphology due to quantum confinement effects. Advances in synthesis methods have allowed nanostructures to be produced with enhanced confinement and structural stability, enhancing the efficiency of energy funnelling and radiative recombination and so resulting in more efficient light emitting devices. In addition, photovoltaics could greatly benefit from the exploitation of these materials not only through their deployment in tandem cell architectures but from the use of multiple exciton generation in these NCs. These systems also offer the opportunity to study quantum effects relating to interactions of excited states within and between NCs. Properties and behaviour that includes an enhanced Rashba effect, superfluorescence, polariton lasing, Rydberg exciton polariton condensates, and antibunched single photon emission have been observed in a single metal halide perovskite NC. The further study of these in NC systems will shed new light on the fundamental nature of their excited states, their control and exploitation. In this perspective, we give an overview of these effects and provide an outlook for the future of perovskite NCs and their devices.

Energy transfer, Excitonic effects, Perovskite nanocrystal, Polariton lasing, Rashba effect, Single photon emission, Superfluorescence
2515-7647
Ahumada-Lazo, Ruben
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Saran, Rinku
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Woolland, Oliver
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Jia, Yunpeng
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Kyriazi, Maria Eleni
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Kanaras, Antonios G.
667ecfdc-7647-4bd8-be03-a47bf32504c7
Binks, David
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Curry, Richard J.
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Ahumada-Lazo, Ruben
4cfceff3-1fa7-42a9-adfd-f18b7ea40a31
Saran, Rinku
f3d09fa8-9ba8-478e-8f17-03748b864c56
Woolland, Oliver
6d0f55af-ade9-424d-96cd-7fe4faa59491
Jia, Yunpeng
82f28e1d-167c-42f4-9e35-c8db7e84dcc6
Kyriazi, Maria Eleni
3cfe9662-4e7f-49bc-b707-ccc2b4da6b09
Kanaras, Antonios G.
667ecfdc-7647-4bd8-be03-a47bf32504c7
Binks, David
a5bea3df-07f2-4934-83f0-51425e16eab6
Curry, Richard J.
409b626f-f0b9-4b5e-a12c-6f8b87d20ee0

Ahumada-Lazo, Ruben, Saran, Rinku, Woolland, Oliver, Jia, Yunpeng, Kyriazi, Maria Eleni, Kanaras, Antonios G., Binks, David and Curry, Richard J. (2021) Exciton effects in perovskite nanocrystals. JPhys Photonics, 3 (2), [021002]. (doi:10.1088/2515-7647/abedd0).

Record type: Review

Abstract

Nanocrystals (NCs) of perovskite materials have recently attracted great research interest because of their outstanding properties for optoelectronic applications, as evidenced by the increasing number of publications on laboratory scale devices. However, in order to achieve the commercial realisation of these devices, an in-depth understanding of the charge dynamics and photo-physics in these novel materials is required. These dynamics are affected by material composition but also by their size and morphology due to quantum confinement effects. Advances in synthesis methods have allowed nanostructures to be produced with enhanced confinement and structural stability, enhancing the efficiency of energy funnelling and radiative recombination and so resulting in more efficient light emitting devices. In addition, photovoltaics could greatly benefit from the exploitation of these materials not only through their deployment in tandem cell architectures but from the use of multiple exciton generation in these NCs. These systems also offer the opportunity to study quantum effects relating to interactions of excited states within and between NCs. Properties and behaviour that includes an enhanced Rashba effect, superfluorescence, polariton lasing, Rydberg exciton polariton condensates, and antibunched single photon emission have been observed in a single metal halide perovskite NC. The further study of these in NC systems will shed new light on the fundamental nature of their excited states, their control and exploitation. In this perspective, we give an overview of these effects and provide an outlook for the future of perovskite NCs and their devices.

Text
Ahumada-Lazo_2021_J._Phys._Photonics_3_021002 - Version of Record
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More information

Accepted/In Press date: 11 March 2021
Published date: April 2021
Additional Information: Funding Information: Y J acknowledges the support of a PhD scholarship from Photon Science Institute, University of Manchester. Publisher Copyright: © 2021 The Author(s). Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
Keywords: Energy transfer, Excitonic effects, Perovskite nanocrystal, Polariton lasing, Rashba effect, Single photon emission, Superfluorescence

Identifiers

Local EPrints ID: 453360
URI: http://eprints.soton.ac.uk/id/eprint/453360
ISSN: 2515-7647
PURE UUID: 071ab7a3-f6c6-49fc-8b1e-b6b86c0ab185
ORCID for Antonios G. Kanaras: ORCID iD orcid.org/0000-0002-9847-6706

Catalogue record

Date deposited: 13 Jan 2022 18:14
Last modified: 14 Jan 2022 02:40

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Contributors

Author: Ruben Ahumada-Lazo
Author: Rinku Saran
Author: Oliver Woolland
Author: Yunpeng Jia
Author: Maria Eleni Kyriazi
Author: David Binks
Author: Richard J. Curry

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