Published January 12, 2017 | Version v1
Journal article Open

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

Creators

  • 1. Department of Molecular Physics, Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, Poland
  • 2. WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow G1 1XL, U.K.
  • 3. Liquid Crystal Institute and Chemical Physics Interdisciplinary Program, Kent State University, Kent, Ohio 44242, United States
  • 4. Lviv Polytechnic National University, S. Bandera 12, 79013 Lviv, Ukraine
  • 5. Department of Polymer Chemistry and Technology, Kaunas University of Technology, Radvilenu Plentas 19, LT-50254 Kaunas, Lithuania

Description

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.

Files

Chapran-etal-ACSAMI-2017-An-ambipolar-BODIPY-derivative-for-a-white-exciplex-OLED.pdf

Files (2.2 MB)

Additional details

Related works

Is identical to
https://strathprints.strath.ac.uk/60334/ (URL)
Is supplemented by
10.15129/dd4e4a3b-71a9-4cd2-a640-61b8ab54eead (DOI)

Funding

European Commission
EXCILIGHT – Donor-Acceptor light emitting exciplexes as materials for easily to tailor ultra-efficient OLED lighting 674990

Subjects

Photonics
http://id.loc.gov/authorities/subjects/sh85101397