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Nanoimprinted distributed feedback lasers of solution processed hybrid perovskites

Whitworth, Guy L., Harwell, Jonathan R., Miller, David N., Hedley, Gordon J., Zhang, Wei, Snaith, Henry J., Turnbull, Graham A. and Samuel, Ifor D. W. (2016) Nanoimprinted distributed feedback lasers of solution processed hybrid perovskites Optics Express, 24 (21). pp. 23677-23684.

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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.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering
Authors :
Whitworth, Guy L.
Harwell, Jonathan R.
Miller, David N.
Hedley, Gordon J.
Snaith, Henry J.
Turnbull, Graham A.
Samuel, Ifor D. W.
Date : 17 October 2016
Funders : Engineering and Physical Sciences Research Council (EPSRC)
DOI : 10.1364/OE.24.023677
Copyright Disclaimer : Journal © 2016 Optical Society of America. Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
Depositing User : Clive Harris
Date Deposited : 06 Jun 2017 07:16
Last Modified : 11 Dec 2018 11:23

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