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Issue 8, 2021
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Single-mode lasing of CsPbBr3 perovskite NWs enabled by the Vernier effect

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Abstract

Inorganic lead halide perovskite (CsPbX3, X = Cl, Br, I) NWs (NWs) have been employed in lasers due to their intriguing attributes of tunable wavelength, low threshold, superior stability, and easy preparation. However, current CsPbX3 NW lasers usually work in a multi-mode modal, impeding their practical applications in optical communication due to the associated false signaling. In this work, high-performance single-mode lasing has been demonstrated by designing and fabricating coupled cavities in the high-quality single-crystal CsPbBr3 NWs via the focused ion beam (FIB) milling approach. The single-mode laser shows a threshold of 20.1 μJ cm−2 and a high quality factor of ∼2800 profiting from the Vernier effect, as demonstrated by the experiments and finite-different time-domain (FDTD) simulations. These results demonstrate the promising potentials of the CsPbX3 NW lasers in optical communication and integrated optoelectronic devices.

Graphical abstract: Single-mode lasing of CsPbBr3 perovskite NWs enabled by the Vernier effect

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Supplementary files

Article information


Submitted
06 Dec 2020
Accepted
06 Feb 2021
First published
08 Feb 2021

Nanoscale, 2021,13, 4432-4438
Article type
Communication

Single-mode lasing of CsPbBr3 perovskite NWs enabled by the Vernier effect

F. Li, M. Jiang, Y. Cheng, Y. Zhang, Z. Yang, Y. Peng, W. Ma, Q. Chen, C. Wang, K. Liu, R. Wang, J. Lu and C. Pan, Nanoscale, 2021, 13, 4432
DOI: 10.1039/D0NR08644D

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