Low-threshold amplified spontaneous emission and lasing from colloidal nanocrystals of caesium lead halide perovskites

Journal article
(Original article)


Publication Details

Author(s): Yakunin S, Protesescu L, Krieg F, Bodnarchuk MI, Nedelcu G, Humer M, De Luca G, Fiebig M, Heiß W, Kovalenko MV
Journal: Nature Communications
Publisher: Nature Publishing Group: Nature Communications
Publication year: 2015
Volume: 6
Journal issue: 6
ISSN: 2041-1723
Language: English


Abstract


Metal halide semiconductors with perovskite crystal structures have recently emerged as highly promising optoelectronic materials. Despite the recent surge of reports on microcrystalline, thin-film and bulk single-crystalline metal halides, very little is known about the photophysics of metal halides in the form of uniform, size-tunable nanocrystals. Here we report low-threshold amplified spontaneous emission and lasing from B10nm monodisperse colloidal nanocrystals of caesium lead halide perovskites CsPbX3 (X=Cl, Br or I, or mixed Cl/Br and Br/I systems). We find that room-temperature optical amplification can be obtained in the entire visible spectral range (440-700 nm) with low pump thresholds down to 5±1 μJ cm-2 and high values of modal net gain of at least 450±30 cm-1. Two kinds of lasing modes are successfully observed: whispering-gallery-mode lasing using silica microspheres as high-finesse resonators, conformally coated with CsPbX3 nanocrystals and random lasing in films of CsPbX3 nanocrystals.



FAU Authors / FAU Editors

Heiß, Wolfgang Prof. Dr.
Professur für Werkstoffwissenschaften (lösungsprozessierte Halbleitermaterialien)


Additional Organisation
Lehrstuhl für Werkstoffwissenschaften (Materialien der Elektronik und der Energietechnologie)
Technische Fakultät
Energie-Campus Nürnberg (EnCN)


How to cite

APA:
Yakunin, S., Protesescu, L., Krieg, F., Bodnarchuk, M.I., Nedelcu, G., Humer, M.,... Kovalenko, M.V. (2015). Low-threshold amplified spontaneous emission and lasing from colloidal nanocrystals of caesium lead halide perovskites. Nature Communications, 6(6). https://dx.doi.org/10.1038/ncomms9056

MLA:
Yakunin, Sergii, et al. "Low-threshold amplified spontaneous emission and lasing from colloidal nanocrystals of caesium lead halide perovskites." Nature Communications 6.6 (2015).

BibTeX: 

Last updated on 2018-19-04 at 03:22