Water-resistant perovskite nanodots enable robust two-photon lasing in aqueous environment.

Li, S; Lei, D; Ren, W; Guo, X; Wu, S; Zhu, Y; Rogach, AL; Chhowalla, M; Jen, AK-Y

Water-resistant perovskite nanodots enable robust two-photon lasing in aqueous environment.

Li, S Lei, D Ren, W

Guo, X Wu, S Zhu, Y Rogach, AL Chhowalla, M Jen, AK-Y

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Publisher:: NATURE PUBLISHING GROUP
Publication Type:: Journal Article
Citation:: Nature communications, 2020, 11, (1)
Issue Date:: 2020-03-04

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Field	Value	Language
dc.contributor.author	Li, S
dc.contributor.author	Lei, D
dc.contributor.author	Ren, W https://orcid.org/0000-0002-6537-6039
dc.contributor.author	Guo, X
dc.contributor.author	Wu, S
dc.contributor.author	Zhu, Y
dc.contributor.author	Rogach, AL
dc.contributor.author	Chhowalla, M
dc.contributor.author	Jen, AK-Y
dc.date.accessioned	2020-11-23T05:26:32Z
dc.date.available	2020-02-10
dc.date.available	2020-11-23T05:26:32Z
dc.date.issued	2020-03-04
dc.identifier.citation	Nature communications, 2020, 11, (1)
dc.identifier.issn	2041-1723
dc.identifier.issn	2041-1723
dc.identifier.uri	http://hdl.handle.net/10453/144256
dc.description.abstract	Owing to their large absorption cross-sections and high photoluminescence quantum yields, lead halide perovskite quantum dots (PQDs) are regarded as a promising candidate for various optoelectronics applications. However, easy degradation of PQDs in water and in a humid environment is a critical hindrance for applications. Here we develop a Pb-S bonding approach to synthesize water-resistant perovskite@silica nanodots keeping their emission in water for over six weeks. A two-photon whispering-gallery mode laser device made of these ultra-stable nanodots retain 80% of its initial emission quantum yield when immersed in water for 13 h, and a two-photon random laser based on the perovskite@silica nanodots powder could still operate after the nanodots were dispersed in water for up to 15 days. Our synthetic approach opens up an entirely new avenue for utilizing PQDs in aqueous environment, which will significantly broaden their applications not only in optoelectronics but also in bioimaging and biosensing.
dc.format	Electronic
dc.language	eng
dc.publisher	NATURE PUBLISHING GROUP
dc.relation.ispartof	Nature communications
dc.relation.isbasedon	10.1038/s41467-020-15016-2
dc.rights	info:eu-repo/semantics/openAccess
dc.rights	info:eu-repo/semantics/openAccess
dc.title	Water-resistant perovskite nanodots enable robust two-photon lasing in aqueous environment.
dc.type	Journal Article
utslib.citation.volume	11
utslib.location.activity	England
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	open_access	*
pubs.consider-herdc	false
dc.date.updated	2020-11-23T05:26:23Z
pubs.issue	1
pubs.publication-status	Published
pubs.volume	11
utslib.citation.issue	1

Abstract:

Owing to their large absorption cross-sections and high photoluminescence quantum yields, lead halide perovskite quantum dots (PQDs) are regarded as a promising candidate for various optoelectronics applications. However, easy degradation of PQDs in water and in a humid environment is a critical hindrance for applications. Here we develop a Pb-S bonding approach to synthesize water-resistant perovskite@silica nanodots keeping their emission in water for over six weeks. A two-photon whispering-gallery mode laser device made of these ultra-stable nanodots retain 80% of its initial emission quantum yield when immersed in water for 13 h, and a two-photon random laser based on the perovskite@silica nanodots powder could still operate after the nanodots were dispersed in water for up to 15 days. Our synthetic approach opens up an entirely new avenue for utilizing PQDs in aqueous environment, which will significantly broaden their applications not only in optoelectronics but also in bioimaging and biosensing.

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http://hdl.handle.net/10453/144256