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

Brenner, Philipp 1; Bar-On, Ofer; Jakoby, Marius 2; Allegro, Isabel ORCID iD icon 1; Richards, Bryce S. ORCID iD icon 1,2; Paetzold, Ulrich W. 1,2; Howard, Ian A. 1,2; Scheuer, Jacob; Lemmer, Uli 1,2
1 Lichttechnisches Institut (LTI), Karlsruher Institut für Technologie (KIT)
2 Institut für Mikrostrukturtechnik (IMT), Karlsruher Institut für Technologie (KIT)

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.

Verlagsausgabe §
DOI: 10.5445/IR/1000091941
Veröffentlicht am 09.03.2019
DOI: 10.1038/s41467-019-08929-0
Zitationen: 63
Web of Science
Zitationen: 66
Zitationen: 71
Cover der Publikation
Zugehörige Institution(en) am KIT 3D Matter Made to Order (3DMM2O)
Institut für Mikrostrukturtechnik (IMT)
Universität Karlsruhe (TH) – Interfakultative Einrichtungen (Interfakultative Einrichtungen)
Karlsruhe School of Optics & Photonics (KSOP)
Lichttechnisches Institut (LTI)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 02.2019
Sprache Englisch
Identifikator ISSN: 2041-1723
KITopen-ID: 1000091941
HGF-Programm 43.23.04 (POF III, LK 01) Nanophotonics for Energy Conversion
Erschienen in Nature Communications
Verlag Nature Research
Band 10
Heft 1
Seiten Article-Nr.: 988
Projektinformation EXC 2082; 3DMM2O (DFG, DFG EXSTRAT, EXC 2082/1, zu FOR_APH_20_03_25+08-58-20)
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
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