High Relative Humidity‐Induced Growth of Perovskite Nanowires from Glass toward Single‐Mode Photonic Nanolasers at Sub‐100‐nm Scale

High Relative Humidity‐Induced Growth of Perovskite Nanowires from Glass toward Single‐Mode Photonic Nanolasers at Sub‐100‐nm Scale

Abstract Metal halide perovskites (MHPs) have achieved substantial progress in their applications; however, their ionic crystal character and low formation energy result in poor structural stability and limited morphological tunability. In particular, high relative humidity (RH) commonly causes seve...

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Main Authors: Zhiqiang Wang, Xinkuo Li, Chenduan Chen, Minhan Lou, Jiajia Wu, Kai Gao, Zengling Li, Ke Sun, Zhou Li, Zhu Xiao, Linhan Li, Pan Wang, Sai Bai, Jianrong Qiu, Dezhi Tan
Format: Article
Language:English
Published: Wiley 2025-02-01
Series:Advanced Science
Subjects:
anisotropic
humidity
perovskite nanowires
single‐mode lasing
sub‐100‐nm scale
Online Access:https://doi.org/10.1002/advs.202412397
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Summary:Abstract Metal halide perovskites (MHPs) have achieved substantial progress in their applications; however, their ionic crystal character and low formation energy result in poor structural stability and limited morphological tunability. In particular, high relative humidity (RH) commonly causes severe MHP degradation, which poses a major obstacle to long‐term device operation. Herein, high RH‐induced growth of anisotropic MHP structures on glass surfaces is reported under 25 °C and atmospheric conditions on a basis of glass corrosion by moisture. Nanowires (NWs) with tunable length and composition are obtained under 85% RH air, and water molecule‐induced facet engineering of perovskite is established for anisotropic growth. Importantly, single‐mode photonic lasing in these MHP NWs with thickness at sub‐100‐nm scale (down to 75 nm ∼ 1/7 lasing wavelength) is achieved via both one‐photon and multiphoton pumping. These nanowire lasers exhibited high quality factor (>3000), high degree of polarization (≈0.9), and excellent stability under laser irradiation. The work not only presents a distinctive technique for the growth of MHPs but also endows MHP NWs with new opportunities for nonlinear optics, strong light‐matter interactions, and active photonic integrated devices.
ISSN:2198-3844

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