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Green perovskite distributed feedback lasers

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Jonathon Robert Harwell, Guy Luke Whitworth, Graham Alexander Turnbull, Ifor David William Samuel

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Abstract

A visible perovskite distributed feedback laser is fabricated for the first time. Through the use of nanocrystal pinning, highly luminescent methylammonium lead bromide films are used to produce stable lasers emitting at 550 nm, with a low threshold of 6 µJcm−2. The lasers were able to support multiple polarisations, and could be switched between transverse magnetic and transverse electric mode operation through simple tuning of the distributed feedback grating period.
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Original languageEnglish
Article number11727
Number of pages8
JournalScientific Reports
Volume7
DOIs
StatePublished - 15 Sep 2017

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