Highly Stable Lasing from Solution-Epitaxially Grown Formamidinium-Lead-Bromide Micro-Resonators

Afify HA, Sytnyk M, Rehm V, Barabash A, Mashkov O, Osvet A, Volobuev VV, Korczak J, Szczerbakow A, Story T, Götz K, Unruh T, Schüßlbauer C, Thiel D, Ullrich T, Guldi DM, Brabec C, Heiß W (2022)


Publication Type: Journal article

Publication year: 2022

Journal

DOI: 10.1002/adom.202200237

Abstract

High-quality epitaxial growth of oriented microcrystallites on a semiconductor substrate is demonstrated here for formamidinium lead bromide perovskite, by drop casting of precursor solutions in air. The microcrystallites exhibit green photoluminescence at room temperature, as well as lasing with low thresholds. Lasing is observed even though the substrate is fully opaque at the lasing wavelengths, and even though it has a higher refractive index as the perovskite active material. Moreover, the lasing is stable for more than 109 excitation pulses, which is more than what is previously achieved for devices kept in the air. Such highly stable lasing under pulsed excitation represents an important step towards continuous mode operation or even electrical excitation in future perovskite-based devices.

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APA:

Afify, H.A., Sytnyk, M., Rehm, V., Barabash, A., Mashkov, O., Osvet, A.,... Heiß, W. (2022). Highly Stable Lasing from Solution-Epitaxially Grown Formamidinium-Lead-Bromide Micro-Resonators. Advanced Optical Materials. https://doi.org/10.1002/adom.202200237

MLA:

Afify, Hany A., et al. "Highly Stable Lasing from Solution-Epitaxially Grown Formamidinium-Lead-Bromide Micro-Resonators." Advanced Optical Materials (2022).

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