Luminescent columnar discotics as highly efficient emitter in pure deep-blue OLEDs with an external quantum efficiency of 4.7%

Abstract

Development of materials that serve as efficient blue emitters in solution-processable OLEDs is challenging. In this communication, we report three derivatives of C3-symmetric 1,3,5-tris(thien-2-yl)benzene-based highly luminescent room temperature columnar discotic liquid crystals (DLCs) suitable as solid-state emitter in OLED devices. When employed in solution-processed OLEDs, one of the derivatives having highest photoluminescence quantum yield exhibited a maximum EQE of 4.7% and CIE chromaticity of (0.16, 0.05) corresponding to ultra deep-blue emission. The finding is sufficiently significant in the field of DLC-based deep blue emitter.

Supplementary files

Article information

Article type
Communication
Accepted
23 Nov 2021
First published
24 Nov 2021

Soft Matter, 2021, Accepted Manuscript

Luminescent columnar discotics as highly efficient emitter in pure deep-blue OLEDs with an external quantum efficiency of 4.7%

S. K. Pal, J. De, I. Sarkar, R. A. K. Yadav, I. Bala, S. P. Gupta, I. Siddiqui and J. Jou, Soft Matter, 2021, Accepted Manuscript , DOI: 10.1039/D1SM01558C

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