Continuous wave amplified spontaneous emission in phase-stable triple cation lead halide perovskite thin films

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

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


Perovskite thin films possess excellent light absorption and light emission properties, as well as a high defect tolerance and high charge carrier mobilities [1]. These properties founded their rapid development in solar cell applications and established this new class of materials as a strong candidate for solution-processed light-emitting applications and on-chip laser sources [2]. So far, the focus has been on investigating the laser behaviour under short pulsed excitation, given the laser death phenomenon observed after a few hundreds of nanoseconds of excitation [3]. Clear CW lasing in perovskites still remains a challenge: It was only observed in a single cation perovskite at a specific temperature of 100 K, where the optical gain originates from small inclusions of a pump-induced crystal phase [3], an unviable approach for practical applications. In contrast, we found that sustained CW operation is possible over a temperature range of ~80-130 K if the methylammonium (MA) cation is partially replaced by formamidinium (FA) and Caesium.

Original languageEnglish
Title of host publicationEuropean Quantum Electronics Conference, EQEC_2019
PublisherOptica Publishing Group (formerly OSA)
ISBN (Print)9781728104690
StatePublished - 2019
EventEuropean Quantum Electronics Conference, EQEC_2019 - Munich, United Kingdom
Duration: 23 Jun 201927 Jun 2019

Publication series

NameOptics InfoBase Conference Papers
VolumePart F143-EQEC 2019
ISSN (Electronic)2162-2701


ConferenceEuropean Quantum Electronics Conference, EQEC_2019
Country/TerritoryUnited Kingdom


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