Carbon‐bridged p‐phenylenevinylene polymer for high‐performance solution‐processed distributed feedback lasers
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Thin‐film organic lasers are attractive light sources for a variety of applications. Recently, it is reported that carbon‐bridged oligo(p‐phenylenevinylene)s (COPVn with repeating unit n = 1–6) function as unique laser dyes which combine high fluorescence efficiency, wavelength tunability, and both thermal and photostability, making them ideal for use in organic semiconductor lasers. However, in order to obtain such excellent properties, COPVn require blending in a matrix, such as a thermoplastic polymer, thus leading to miscibility issues, limited absorption, and charge transporting properties. Here, high‐performance lasers with a novel active polymer poly‐COPV1, based on the basic unit of COPV1 and prepared as a high‐quality neat film, are reported which overcome the trade‐off between the device performance and durability. The prepared lasers show thresholds 30 times lower and operational lifetimes 300 times longer than devices based on COPV1 dispersed in polystyrene. The low threshold operation allows the poly‐COPV1 lasers to be pumped by a nitride diode laser.
Morales‐Vidal , M , Quintana , J A , Villalvilla , J M , Boj , P G , Nishioka , H , Tsuji , H , Nakamura , E , Whitworth , G L , Turnbull , G A , Samuel , I D W & Díaz‐García , M A 2018 , ' Carbon‐bridged p ‐phenylenevinylene polymer for high‐performance solution‐processed distributed feedback lasers ' , Advanced Optical Materials , vol. Early View , 1800069 . https://doi.org/10.1002/adom.201800069
Advanced Optical Materials
© 2018 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1002/adom.201800069
DescriptionThe Spanish team acknowledges support from the Spanish Government (MINECO) and the European Community (FEDER) through Grant Nos. MAT2011-28167-C02-01 and MAT2015-66586-R. M.M-V. was partly supported by a MINECO FPI Fellowship (No. BES-2009-020747) and by a Junta de Castilla y León (JCYL) Postdoctoral Fellowship (No. SA046U16). The Japanese authors thank the financial support from MEXT (16H04106 for H.T. and 15H05754 for E.N.). The St Andrews team acknowledge support from the Engineering and Physical Sciences Research Council through grants EP/K503162/1 and EP/J009016/1. I.D.W.S. acknowledges a Royal Society Wolfson Research Merit Award.
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