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Updated: Jul 14, 2026

Production and Characterization of Vacuum Deposited Organic Light Emitting Diodes
Published on: November 16, 2018
Electrical properties of 1,4-bis(4-(phenylethynyl)phenylethynyl)benzene and its application for organic light
Larysa Fenenko1, Guang Shao, Akihiro Orita
1Center for Future Chemistry, Kyushu University, 744 Motooka, Nishi, Fukuoka, 819-0395, Japan.
Abstract:
We found that a phenylene ethynylene derivative, 1,4-bis(4-(phenylethynyl)phenylethynyl)benzene (BPPB), provides very high photoluminescence efficiency both in solution (Phi(PL) = 95 +/- 3%) and thin films (Phi(PL) = 71 +/- 3%); further, we observed blue electroluminescence (EL) of lambda(EL(max)) approximately 470 and 510 nm with an external EL efficiency of eta(EL) approximately 0.53% and maximum luminance of approximately 70000 cd m(-2) at current density of approximately 2 A cm(-2) with BPPB as an emitter; also we identified that BPPB functions as a hole transport layer in organic light emitting diodes.
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