Nanoimprinted distributed feedback lasers of solution processed hybrid perovskites

Guy L. Whitworth, Jonathan R. Harwell, David N. Miller, Gordon J. Hedley, Wei Zhang, Henry J. Snaith, Graham A. Turnbull*, Ifor D. W. Samuel

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

80 Citations (Scopus)
3 Downloads (Pure)

Abstract

Hybrid perovskite materials have considerable potential for light emitting devices such as LEDs and lasers. We combine solution processed CH3NH3PbI3 perovskite with UV nanoimprinted polymer gratings to fabricate distributed feedback (DFB) lasers. The lead acetate deposition route is shown to be an effective method for fabricating low-loss waveguides (loss coefficient ~6 cm-1) and highly compatible with the polymer grating substrates. The nanoimprinted perovskite exhibited single-mode band-edge lasing, confirmed by angle-dependent transmission measurements. Depending on the excitation pulse duration the lasing threshold shows a value of 110 μJ/cm2 under nanosecond pumping and 4 μJ/cm2 under femtosecond pumping. We demonstrate further that this laser has excellent stability with a lifetime of 108 pulses.
Original languageEnglish
Pages (from-to)23677-23684
Number of pages8
JournalOptics Express
Volume24
Issue number21
DOIs
Publication statusPublished - 3 Oct 2016

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