Quantized electronic transitions in electrodeposited copper indium selenide nanocrystalline homojunctions

Abstract Pairing semiconductors with electrochemical processing offers an untapped opportunity to create novel nanostructures for practical devices. Here we report the results of one such pairing: the in-situ formation of highly-doped, interface-matched, sharp nanocrystalline homojunctions (NHJs) wi...

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Autores principales:	Shalini Menezes, Anura P. Samantilleke, Bryon W. Larson
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/d00ccaafaed2447cb1b757f341ab7a98
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spelling	oai:doaj.org-article:d00ccaafaed2447cb1b757f341ab7a982021-12-02T14:21:42ZQuantized electronic transitions in electrodeposited copper indium selenide nanocrystalline homojunctions10.1038/s41598-021-83526-02045-2322https://doaj.org/article/d00ccaafaed2447cb1b757f341ab7a982021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-83526-0https://doaj.org/toc/2045-2322Abstract Pairing semiconductors with electrochemical processing offers an untapped opportunity to create novel nanostructures for practical devices. Here we report the results of one such pairing: the in-situ formation of highly-doped, interface-matched, sharp nanocrystalline homojunctions (NHJs) with single step electrodeposition of two copper-indium-selenide (CISe) compounds on flexible foil. It produces a homogenous film, comprising inherently ordered, 3-dimensional interconnected network of pn-CISe NHJs. These CISe NHJs exhibit surprising non-linear emissions, quantized transitions, large carrier mobility, low trap-state-density, long carrier lifetime and possible up-conversion. They facilitate efficient separation of minority carriers, reduce recombination and essentially function like quantum materials. This approach mitigates the material issues and complex fabrication of incumbent nanoscale heterojunctions; it also overcomes the flexibility and scale-up challenges of conventional planar pn junctions. The self-stabilized CISe NHJ film can be roll-to-roll processed in ambient atmosphere, thus providing a promising platform for a range of optoelectronic technologies. This concept exemplified by CISe compounds can be adapted to create nano-scale pn junctions with other inorganic semiconductors.Shalini MenezesAnura P. SamantillekeBryon W. LarsonNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Shalini Menezes Anura P. Samantilleke Bryon W. Larson Quantized electronic transitions in electrodeposited copper indium selenide nanocrystalline homojunctions
description	Abstract Pairing semiconductors with electrochemical processing offers an untapped opportunity to create novel nanostructures for practical devices. Here we report the results of one such pairing: the in-situ formation of highly-doped, interface-matched, sharp nanocrystalline homojunctions (NHJs) with single step electrodeposition of two copper-indium-selenide (CISe) compounds on flexible foil. It produces a homogenous film, comprising inherently ordered, 3-dimensional interconnected network of pn-CISe NHJs. These CISe NHJs exhibit surprising non-linear emissions, quantized transitions, large carrier mobility, low trap-state-density, long carrier lifetime and possible up-conversion. They facilitate efficient separation of minority carriers, reduce recombination and essentially function like quantum materials. This approach mitigates the material issues and complex fabrication of incumbent nanoscale heterojunctions; it also overcomes the flexibility and scale-up challenges of conventional planar pn junctions. The self-stabilized CISe NHJ film can be roll-to-roll processed in ambient atmosphere, thus providing a promising platform for a range of optoelectronic technologies. This concept exemplified by CISe compounds can be adapted to create nano-scale pn junctions with other inorganic semiconductors.
format	article
author	Shalini Menezes Anura P. Samantilleke Bryon W. Larson
author_facet	Shalini Menezes Anura P. Samantilleke Bryon W. Larson
author_sort	Shalini Menezes
title	Quantized electronic transitions in electrodeposited copper indium selenide nanocrystalline homojunctions
title_short	Quantized electronic transitions in electrodeposited copper indium selenide nanocrystalline homojunctions
title_full	Quantized electronic transitions in electrodeposited copper indium selenide nanocrystalline homojunctions
title_fullStr	Quantized electronic transitions in electrodeposited copper indium selenide nanocrystalline homojunctions
title_full_unstemmed	Quantized electronic transitions in electrodeposited copper indium selenide nanocrystalline homojunctions
title_sort	quantized electronic transitions in electrodeposited copper indium selenide nanocrystalline homojunctions
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/d00ccaafaed2447cb1b757f341ab7a98
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Quantized electronic transitions in electrodeposited copper indium selenide nanocrystalline homojunctions

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