An ambipolar BODIPY derivative for a white exciplex OLED and cholesteric liquid crystal laser toward multifunctional devices

Chapran, M. et al. (2017) An ambipolar BODIPY derivative for a white exciplex OLED and cholesteric liquid crystal laser toward multifunctional devices. ACS Applied Materials and Interfaces, 9(5), pp. 4750-4757. (doi:10.1021/acsami.6b13689) (PMID:28078885)

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Abstract

A new interface engineering method is demonstrated for the preparation of an efficient white organic light-emitting diode (WOLED) by embedding an ultrathin layer of the novel ambipolar red emissive compound 4,4-difluoro-2,6-di(4-hexylthiopen-2-yl)-1,3,5,7,8-pentamethyl-4-bora-3a,4a-diaza-s-indacene (bThBODIPY) in the exciplex formation region. The compound shows a hole and electron mobility of 3.3 × 10–4 and 2 × 10–4 cm2 V–1 s–1, respectively, at electric fields higher than 5.3 × 105 V cm–1. The resulting WOLED exhibited a maximum luminance of 6579 cd m–2 with CIE 1931 color coordinates (0.39; 0.35). The bThBODIPY dye is also demonstrated to be an effective laser dye for a cholesteric liquid crystal (ChLC) laser. New construction of the ChLC laser, by which a flat capillary with an optically isotropic dye solution is sandwiched between two dye-free ChLC cells, provides photonic lasing at a wavelength well matched with that of a dye-doped planar ChLC cell.

Item Type:Articles
Additional Information:The authors thank the European Commission (Marie Curie Action of FP7, Grant No.: PIRSES-GA-2013-612670), the UK Engineering and Physical Sciences Research Council (Grant No.: EP/I012591/1), the University of Strathclyde, and the Kaunas University of Technology for financial support. P.J.S. thanks the Royal Society for a Wolfson Research Merit Award. M.C. is grateful for financial support from grant 674990 EXCILIGHT-H2020-MSCA-ITN-2015. O.D.L. acknowledges support from NSF grant DMR-1410378 for studies of the lasing effect.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Skabara, Professor Peter and Findlay, Mr Neil and Angioni, Mr Enrico
Authors: Chapran, M., Angioni, E., Findlay, N. J., Breig, B., Cherpak, V., Stakhira, P., Tuttle, T., Volyniuk, D., Grazulevicius, J. V., Nastishin, Y. A., Lavrentovich, O. D., and Skabara, P. J.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:ACS Applied Materials and Interfaces
Publisher:American Chemical Society
ISSN:1944-8244
ISSN (Online):1944-8252
Copyright Holders:Copyright © 2017 American Chemical Society
First Published:First published in ACS Applied Materials and Interfaces 9(5):4750-4757
Publisher Policy:Reproduced under a Creative Commons License

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