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Nano Lett. 2018 May 9;18(5):3221-3228. doi: 10.1021/acs.nanolett.8b00990. Epub 2018 Apr 27.

Low-Threshold Lasing from 2D Homologous Organic-Inorganic Hybrid Ruddlesden-Popper Perovskite Single Crystals.

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Department of Materials Science and Engineering , National Taiwan University , Taipei 106 , Taiwan.
Department of Physics , National Taiwan University , Taipei 106 , Taiwan.
Nano Science and Technology Program, Taiwan International Graduate Program , Academia Sinica and National Taiwan University , Taipei 115 , Taiwan.
Graduate Institute of Biomedical Optomechatronics , Taipei Medical University , Taipei 110 , Taiwan.
Center for Condensed Matter Sciences , National Taiwan University , Taipei 106 , Taiwan.
Department of Chemistry , National Taiwan Normal University , Taipei 116 , Taiwan.
Institute of Physics , Academia Sinica , Taipei 115 , Taiwan.
Center of Atomic Initiative for New Materials (AI-MAT) , National Taiwan University , Taipei 106 , Taiwan.
Taiwan Consortium of Emergent Crystalline Materials (TCECM) , Ministry of Science and Technology , Taipei 106 , Taiwan.
International Graduate Program of Molecular Science and Technology , National Taiwan University (NTU-MST) , Taipei 106 , Taiwan.


Organic-inorganic hybrid two-dimensional (2D) perovskites have recently attracted great attention in optical and optoelectronic applications due to their inherent natural quantum-well structure. We report the growth of high-quality millimeter-sized single crystals belonging to homologous two-dimensional (2D) hybrid organic-inorganic Ruddelsden-Popper perovskites (RPPs) of (BA)2(MA) n-1Pb nI3 n+1 ( n = 1, 2, and 3) by a slow evaporation at a constant-temperature (SECT) solution-growth strategy. The as-grown 2D hybrid perovskite single crystals exhibit excellent crystallinity, phase purity, and spectral uniformity. Low-threshold lasing behaviors with different emission wavelengths at room temperature have been observed from the homologous 2D hybrid RPP single crystals. Our result demonstrates that solution-growth homologous organic-inorganic hybrid 2D perovskite single crystals open up a new window as a promising candidate for optical gain media.


2D RPP single crystals; lasing; photoluminescence; solution growth

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