Journal article Open Access

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

Chapran, Marian; Angioni, Enrico; Findlay, Neil J.; Breig, Benjamin; Cherpk, Vladyslav; Stakhira, Pavlo; Tuttle, Tell; Volyniuk, Dmytro; Grazulevicius, Juozas V.; Nastishin, Yuriy A.; Lavrentovich, Oleg D.; Skabara, Peter J.

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    <dcat:keyword>organic light-emitting diodes (OLEDs)</dcat:keyword>
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    <dct:description>&lt;p&gt;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&lt;sup&gt;-4&lt;/sup&gt; and 2 × 10&lt;sup&gt;-4&lt;/sup&gt; cm&lt;sup&gt;2&lt;/sup&gt; V&lt;sup&gt;-1&lt;/sup&gt; s&lt;sup&gt;-1&lt;/sup&gt;, respectively, at electric fields higher than 5.3 × 10&lt;sup&gt;5&lt;/sup&gt; V cm&lt;sup&gt;-1&lt;/sup&gt;. The resulting WOLED exhibited a maximum luminance of 6579 cd m&lt;sup&gt;-2&lt;/sup&gt; 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.&lt;/p&gt;</dct:description>
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Indexed in
Publication date:
January 12, 2017
DOI:
10.1021/acsami.6b13689
Keyword(s):
BODIPY dye cholesteric liquid crystal laser exciplex organic light-emitting diodes (OLEDs) white light
Subject(s):
Photonics
Published in:
ACS Applied Materials and Interfaces: 9 pp. 4750-4757 (5).
Grants:
European Commission:
  • EXCILIGHT - Donor-Acceptor light emitting exciplexes as materials for easily to tailor ultra-efficient OLED lighting (674990)
Related identifiers:
Identical to
Supplementary material
License (for files):
Creative Commons Attribution 4.0 International

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