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


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.

Publication DOI: https://doi.org/10.1039/d0nr01171a
Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
College of Engineering & Physical Sciences
College of Engineering & Physical Sciences > School of Informatics and Digital Engineering > Electrical and Electronic Engineering
Additional Information: Funding Information: This work was supported by the Ministry of Science and Technology (MOST), Taiwan under grant numbers MOST 109-2124-M-002-001, MOST 108-2112-M-001-049-MY2, and MOST 108-2119-M-002-025-MY3, Academia Sinica funded i-MATE financial support AS-iMATE-109-13 and the Ministry of Education, Taiwan. RCM and AR want to thank the support from the Marie Skłodowska-Curie Individual Fellowship (MOFUS, # 795356). © 2020 The Royal Society of Chemistry.
Uncontrolled Keywords: Materials Science(all)
Publication ISSN: 2040-3372
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Related URLs: https://pubs.rs ... 1A#!divAbstract (Publisher URL)
http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2020-09-21
Published Online Date: 2020-07-29
Accepted Date: 2020-07-29
Authors: Roy, Pradip Kumar
Ulaganathan, Rajesh Kumar
Raghavan, Chinnambedu Murugesan (ORCID Profile 0000-0003-3521-4255)
Mhatre, Swapnil Milind
Lin, Hung-I
Chen, Wei-Liang
Chang, Yu-Ming
Rozhin, Alex (ORCID Profile 0000-0003-2271-8227)
Hsu, Yun-Tzu
Chen, Yang-Fang
Sankar, Raman
Chou, Fang-Cheng
Liang, Chi-Te



Version: Accepted Version

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