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Continuous wave amplified spontaneous emission in phase-stable lead halide perovskites

Brenner, Philipp; Bar-On, Ofer; Jakoby, Marius; Allegro, Isabel; Richards, Bryce S.; Paetzold, Ulrich W.; Howard, Ian A.; Scheuer, Jacob; Lemmer, Uli

Sustained stimulated emission under continuous-wave (CW) excitation is a prerequisite for new semiconductor materials being developed for laser gain media. Although hybrid organic-inorganic lead-halide perovskites have attracted much attention as optical gain media, the demonstration of room-temperature CW lasing has still not been realized. Here, we present a critical step towards this goal by demonstrating CW amplified spontaneous emission (ASE) in a phase-stable perovskite at temperatures up to 120 K. The phase-stable perovskite maintains its room-temperature phase while undergoing cryogenic cooling and can potentially support CW lasing also at higher temperatures. We find the threshold level for CW ASE to be 387 W cm-2 at 80 K. These results indicate that easily-fabricated single-phase perovskite thin films can sustain CW stimulated emission, potential at higher temperatures as well, by further optimization of the material quality in order to extend the carrier lifetimes.

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Verlagsausgabe §
DOI: 10.5445/IR/1000091941
Veröffentlicht am 09.03.2019
Zugehörige Institution(en) am KIT Institut für Mikrostrukturtechnik (IMT)
Lichttechnisches Institut (LTI)
Publikationstyp Zeitschriftenaufsatz
Jahr 2019
Sprache Englisch
Identifikator ISSN: 2041-1723
KITopen-ID: 1000091941
Erschienen in Nature Communications
Band 10
Heft 1
Seiten Article-Nr.: 988
Projektinformation 3DMM2O (DFG, DFG EXSTRAT, EXC 2082/1)
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Nachgewiesen in Web of Science
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