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Proceedings Paper

Ultrahigh and ultralow workfunction charged-doped polyelectrolyte ohmic injection layers (Conference Presentation)
Author(s): Lay-Lay Chua

Paper Abstract

Polyelectrolytes have been proposed as the charge injection/extraction layers for organic electronics for a long time. These layers have the advantage of orthogonal solvent processing, but suffer from large electrical resistance. In this talk, I will describe recent work that shows that greatly superior results are obtained when the polyelectrolytes get chemically doped to give what we call heavily charge-doped, self-compensated polymers. These materials can be designed through careful selection of semiconductor core, counter-ion, and spectator-ion, to achieve any desired work function between 5.8 eV to 2.4 eV, sufficient to create ohmic hole, and electron, injection contact at will, to almost any semiconductor. I will also explain how we can at the same time achieve ambient processability for even the ultra work function materials, opening an unprecedented path for ambient solution deposition.

Paper Details

Date Published: 10 September 2019
Proc. SPIE 11093, Organic and Hybrid Light Emitting Materials and Devices XXIII, 110930E (10 September 2019); doi: 10.1117/12.2531841
Show Author Affiliations
Lay-Lay Chua, National Univ. of Singapore (Singapore)

Published in SPIE Proceedings Vol. 11093:
Organic and Hybrid Light Emitting Materials and Devices XXIII
Chihaya Adachi; Jang-Joo Kim; Franky So, Editor(s)

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