Issue 35, 2020

Unprecedented random lasing in 2D organolead halide single-crystalline perovskite microrods

Abstract

Three-dimensional organic–inorganic hybrid halide perovskites have been demonstrated as great materials for applications in optoelectronics and photonics. However, their inherent instabilities in the presence of moisture, light, and heat may hinder their commercialization. Alternatively, emerging two-dimensional (2D) organic–inorganic hybrid perovskites have recently attracted increasing attention owing to their great environmental stability and inherent natural quantum-well structure. In this work, we have synthesized a high-quality long-chain organic diammonium spacer assisted 2D hybrid perovskite FA-(N-MPDA)PbBr4 (FA = formamidinium and N-MPDA = N-methylpropane-1,3-diammonium) by the slow evaporation at constant temperature method. The millimeter-sized single-crystalline microrods demonstrate low threshold random lasing behavior at room temperature. The single-crystalline 2D hybrid perovskite random laser achieved a very narrow linewidth (∼0.1 nm) with a low threshold (∼0.5 μJ cm−2) and a high quality factor (∼5350). Furthermore, the 2D hybrid microrod laser shows stable lasing emission with no measurable degradation after at least 2 h under continuous illumination, which substantially proves the stability of 2D perovskites. Our results demonstrate the promise of 2D organic–inorganic microrod-shaped perovskites and provide an important step toward the realization of high-performance optoelectronic devices.

Graphical abstract: Unprecedented random lasing in 2D organolead halide single-crystalline perovskite microrods

Supplementary files

Article information

Article type
Paper
Submitted
10 Feb 2020
Accepted
29 Jul 2020
First published
29 Jul 2020

Nanoscale, 2020,12, 18269-18277

Unprecedented random lasing in 2D organolead halide single-crystalline perovskite microrods

P. K. Roy, R. K. Ulaganathan, C. M. Raghavan, S. M. Mhatre, H. Lin, W. Chen, Y. Chang, A. Rozhin, Y. Hsu, Y. Chen, R. Sankar, F. Chou and C. Liang, Nanoscale, 2020, 12, 18269 DOI: 10.1039/D0NR01171A

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