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Concrete perovskites for fabricating high-quality micro-laser arrays

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Abstract

Patterning of single-crystalline lead halide perovskites (APbX3, X = Cl, Br, I) into laser arrays has attracted considerable research attention. However, the random size distribution leads to an unrepeatable lasing action, which makes the fabrication of highly ordered laser arrays a formidable task. Beyond those single-crystalline units, here, we report novel hybrid Concrete-like perovskites (CPs) of CsPbBr3@MABr to obtain high-quality optical micro-cavity arrays for lasing. Similar to the case of Concrete, ∼100 nm inorganic CsPbBr3 coarse aggregates bonded with finer cement-like MABr, and presented a huge enhancement in optical gain (G = 200 cm−1) and deformable plasticity. Well-controlled dimensions and uniform geometries enable the CP micro-rings and nanowires to function as high-quality whispering-gallery mode (WGM) and Fabry–Pérot (FP) lasers, respectively. The “Concrete” perovskite strategy provides new insights for the fabrication of high-quality laser arrays with promising applications in integrated coherent light sources and photonics.

Graphical abstract: Concrete perovskites for fabricating high-quality micro-laser arrays

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Article information


Submitted
22 Aug 2020
Accepted
01 Oct 2020
First published
01 Oct 2020

J. Mater. Chem. C, 2020, Advance Article
Article type
Paper

Concrete perovskites for fabricating high-quality micro-laser arrays

H. Zhang, T. Chen and H. Fu, J. Mater. Chem. C, 2020, Advance Article , DOI: 10.1039/D0TC03988H

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