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

Siqi Li; Dangyuan Lei; Wei Ren; Xuyun Guo; Shengfan Wu; Ye Zhu; Andrey L. Rogach; Manish Chhowalla; Alex K.Y. Jen

doi:10.1038/s41467-020-15016-2

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

Siqi Li, Dangyuan Lei, Wei Ren, Xuyun Guo, Shengfan Wu, Ye Zhu, Andrey L. Rogach, Manish Chhowalla, Alex K.Y. Jen

Rutgers University

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

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.

Original language	English
Article number	1192
Journal	Nature communications
Volume	11
Issue number	1
DOIs	https://doi.org/10.1038/s41467-020-15016-2
Publication status	Published - Dec 1 2020

ASJC Scopus subject areas

Chemistry(all)
Biochemistry, Genetics and Molecular Biology(all)
Physics and Astronomy(all)

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title = "Water-resistant perovskite nanodots enable robust two-photon lasing in aqueous environment",

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.",

author = "Siqi Li and Dangyuan Lei and Wei Ren and Xuyun Guo and Shengfan Wu and Ye Zhu and Rogach, {Andrey L.} and Manish Chhowalla and Jen, {Alex K.Y.}",

note = "Funding Information: This work was financially supported by the Hong Kong Research Grants Council (General Research Fund Grant No. 15301414 and National Natural Science Foundation of China/Research Grants Council Joint Research Scheme Grant No. N_CityU108/17), the City University of Hong Kong (Project Nos. 9610456 and 9360140), the Hong Kong Polytechnic University (Grant No. 1-ZE1B), and the Croucher Foundation through a Senior Research Fellowship (A.L.R.). S.L. thanks Drs. Jianhui Sun and Xin Hu for helpful discussions.",

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AU - Wu, Shengfan

AU - Zhu, Ye

AU - Rogach, Andrey L.

AU - Chhowalla, Manish

AU - Jen, Alex K.Y.

N1 - Funding Information: This work was financially supported by the Hong Kong Research Grants Council (General Research Fund Grant No. 15301414 and National Natural Science Foundation of China/Research Grants Council Joint Research Scheme Grant No. N_CityU108/17), the City University of Hong Kong (Project Nos. 9610456 and 9360140), the Hong Kong Polytechnic University (Grant No. 1-ZE1B), and the Croucher Foundation through a Senior Research Fellowship (A.L.R.). S.L. thanks Drs. Jianhui Sun and Xin Hu for helpful discussions.

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N2 - 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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