Pourdavoud, Neda, Haeger, Tobias, Mayer, Andre, Cegielski, Piotr Jacek, Giesecke, Anna Lena ORCID: 0000-0002-3072-4451, Heiderhoff, Ralf, Olthof, Selina, Zaefferer, Stefan, Shutsko, Ivan, Henkel, Andreas, Becker-Koch, David ORCID: 0000-0001-5921-5768, Stein, Markus, Cehovski, Marko, Char, Ouacef, Johannes, Hans-Hermann, Rogalla, Detlef, Lemme, Max Christian ORCID: 0000-0003-4552-2411, Koch, Martin, Vaynzof, Yana, Meerholz, Klaus ORCID: 0000-0001-7450-4672, Kowalsky, Wolfgang, Scheer, Hella-Christin, Goerrn, Patrick and Riedl, Thomas (2019). Room-Temperature Stimulated Emission and Lasing in Recrystallized Cesium Lead Bromide Perovskite Thin Films. Adv. Mater., 31 (39). WEINHEIM: WILEY-V C H VERLAG GMBH. ISSN 1521-4095

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Abstract

Cesium lead halide perovskites are of interest for light-emitting diodes and lasers. So far, thin-films of CsPbX3 have typically afforded very low photoluminescence quantum yields (PL-QY < 20%) and amplified spontaneous emission (ASE) only at cryogenic temperatures, as defect related nonradiative recombination dominated at room temperature (RT). There is a current belief that, for efficient light emission from lead halide perovskites at RT, the charge carriers/excitons need to be confined on the nanometer scale, like in CsPbX3 nanoparticles (NPs). Here, thin films of cesium lead bromide, which show a high PL-QY of 68% and low-threshold ASE at RT, are presented. As-deposited layers are recrystallized by thermal imprint, which results in continuous films (100% coverage of the substrate), composed of large crystals with micrometer lateral extension. Using these layers, the first cesium lead bromide thin-film distributed feedback and vertical cavity surface emitting lasers with ultralow threshold at RT that do not rely on the use of NPs are demonstrated. It is foreseen that these results will have a broader impact beyond perovskite lasers and will advise a revision of the paradigm that efficient light emission from CsPbX3 perovskites can only be achieved with NPs.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Pourdavoud, NedaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Haeger, TobiasUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mayer, AndreUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cegielski, Piotr JacekUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Giesecke, Anna LenaUNSPECIFIEDorcid.org/0000-0002-3072-4451UNSPECIFIED
Heiderhoff, RalfUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Olthof, SelinaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zaefferer, StefanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Shutsko, IvanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Henkel, AndreasUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Becker-Koch, DavidUNSPECIFIEDorcid.org/0000-0001-5921-5768UNSPECIFIED
Stein, MarkusUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cehovski, MarkoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Char, OuacefUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Johannes, Hans-HermannUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rogalla, DetlefUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lemme, Max ChristianUNSPECIFIEDorcid.org/0000-0003-4552-2411UNSPECIFIED
Koch, MartinUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Vaynzof, YanaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Meerholz, KlausUNSPECIFIEDorcid.org/0000-0001-7450-4672UNSPECIFIED
Kowalsky, WolfgangUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Scheer, Hella-ChristinUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Goerrn, PatrickUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Riedl, ThomasUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-144478
DOI: 10.1002/adma.201903717
Journal or Publication Title: Adv. Mater.
Volume: 31
Number: 39
Date: 2019
Publisher: WILEY-V C H VERLAG GMBH
Place of Publication: WEINHEIM
ISSN: 1521-4095
Language: English
Faculty: Faculty of Mathematics and Natural Sciences
Divisions: Faculty of Mathematics and Natural Sciences > Department of Chemistry > Institute of Physical Chemistry
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
LIGHT-EMITTING-DIODES; HALIDE PEROVSKITES; EFFICIENCY; PHOTOLUMINESCENCE; NANOCRYSTALS; STABILITY; HYBRID; CSPBX3; LASERS; BRMultiple languages
Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed MatterMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/14447

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