Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/144866
Title: Air stable organic-inorganic perovskite nanocrystals@polymer nanofibers and waveguide lasing
Authors: Wang, Zhe
He, Haiyong
Liu, Sheng
Wang, Hong
Zeng, Qingsheng
Liu, Zheng
Xiong, Qihua
Fan, Hong Jin
Keywords: Engineering::Materials::Nanostructured materials
Issue Date: 2020
Source: Wang, Z., He, H., Liu, S., Wang, H., Zeng, Q., Liu, Z., ... Fan, H. J. (2020). Air stable organic-inorganic perovskite nanocrystals@polymer nanofibers and waveguide lasing. Small, 16(43), e2004409-. doi:10.1002/smll.202004409
Journal: Small
Abstract: Organic-inorganic hybrid perovskites have been considered as promising gain materials for lasing. Despite previous reports of lasing from nanocrystals, thin films and single crystals, the stability of perovskite lasers has been a challenge for its practical applications. Herein, a scalable strategy to prepare ultrastable perovskite@polymer hybrid fibers by employing a facile emulsion electrospinning approach is demonstrated. During the electrospinning process, polymethyl methacrylate (PMMA) first solidifies into an outer shell layer. Meanwhile, emulsion drops containing poly(vinylidene fluoride) (PVDF) and perovskite precursor are pushed inward and evolve into perovskite nanocrystals covered by PVDF. The PMMA with smooth surface benefits the light transport and the water-resistant PVDF blocks the moisture. The methylammonium lead bromide perovskite-embedded fibers can emit intensive light after storage in humid ambient environment (relative humidity >60%) or even in water. Amplified spontaneous emissions from the fibers network and waveguide lasing from chopped single fiber is demonstrated.
URI: https://hdl.handle.net/10356/144866
ISSN: 1613-6829
DOI: 10.1002/smll.202004409
Rights: This is the accepted version of the following article: Wang, Z., He, H., Liu, S., Wang, H., Zeng, Q., Liu, Z., ... Fan, H. J. (2020). Air stable organic-inorganic perovskite nanocrystals@polymer nanofibers and waveguide lasing. Small, 16(43), e2004409-. doi:10.1002/smll.202004409, which has been published in final form at 10.1002/smll.202004409. This article may be used for non-commercial purposes in accordance with the Wiley Self-Archiving Policy [https://authorservices.wiley.com/authorresources/Journal-Authors/licensing/self-archiving.html].
Fulltext Permission: embargo_20211103
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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