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

Nature Communications
Siqi LiAlex K-Y Jen

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.

References

Nov 22, 2005·Nature Methods·Fritjof Helmchen, Winfried Denk
May 25, 2007·Nature·Victor I KlimovAndrei Piryatinski
Aug 23, 2007·Environmental Science & Technology·Wassana YantaseeMarvin G Warner
Jun 10, 2009·Nano Letters·Florencio García-SantamaríaVictor I Klimov
Feb 15, 1992·Optics Letters·M Sheik-BahaeE W Stryland
Sep 8, 2011·Nanoscale·Jeong-Hyeok ImNam-Gyu Park
Jan 1, 2012·Nature Photonics·Brandon ReddingHui Cao
Apr 24, 2015·Advanced Materials·Qing LiaoHongbing Fu
Mar 5, 2016·Journal of the American Chemical Society·Yanqing XuMin Xiao
Mar 30, 2016·Nano Letters·Zhuoxian WangAlexandra Boltasseva
May 24, 2016·Advanced Materials·Sjoerd A VeldhuisSubodh G Mhaisalkar
Oct 7, 2016·Chemical Society Reviews·Yizhong ShenHong-Yuan Chen
Dec 13, 2016·Nanoscale·Leyre GomezTom Gregorkiewicz
May 27, 2017·Angewandte Chemie·Anna LoiudiceRaffaella Buonsanti
Jun 8, 2018·Angewandte Chemie·Chong GengWengang Bi
Aug 29, 2018·Nature·Qiushui ChenXiaogang Liu

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Citations

Oct 2, 2020·Dalton Transactions : an International Journal of Inorganic Chemistry·Huajun He, Tze Chien Sum
Feb 18, 2021·Chemical Communications : Chem Comm·Aifei WangZhengtao Deng
Feb 28, 2021·Light, Science & Applications·Nikita ToropovFrank Vollmer
Mar 19, 2021·Light, Science & Applications·Hao ChangLong Zhang
Aug 14, 2021·Optics Letters·Shijia Hua, Wending Zhang
Aug 17, 2021·Chemistry of Materials : a Publication of the American Chemical Society·Andriy StelmakhMaksym V Kovalenko
Sep 14, 2021·The Journal of Physical Chemistry Letters·Pavel M TalianovMikhail V Zyuzin

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Methods Mentioned

BETA
transmission electron microscopy
X-ray
infrared spectroscopy
light scattering

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