Nano-Alignment in Semiconducting Polymer Films: A Path to Achieve High Current Density and Brightness in Organic Light Emitting Transistors

Chaudhry, Mujeeb Ullah; Muhieddine, Khalid; Wawrzinek, Robert; Li, Jun; Lo, Shih-Chun; Namdas, Ebinazar B.

doi:10.1021/acsphotonics.8b00011

Nano-Alignment in Semiconducting Polymer Films: A Path to Achieve High Current Density and Brightness in Organic Light Emitting Transistors

Chaudhry, Mujeeb Ullah; Muhieddine, Khalid; Wawrzinek, Robert; Li, Jun; Lo, Shih-Chun; Namdas, Ebinazar B.

Authors

Dr Mujeeb Chaudhry mujeeb.u.chaudhry@durham.ac.uk
Associate Professor

Khalid Muhieddine

Robert Wawrzinek

Jun Li

Shih-Chun Lo

Ebinazar B. Namdas

Abstract

Organic light emitting field effect transistors (LEFETs) integrate light emission of a diode with logic functions of a transistor into a single device architecture. This integration has the potential to provide simplified displays at low costs and access to injection lasing. However, the charge carrier mobility in LEFETs is a limiting factor in realizing high current densities along with a trade-off between brightness and efficiency. Herein, we present a technique controlling the nanoscale morphology of semiconducting polymers using nanoscale grooved substrates and dip-coating deposition to achieve high current density. We then applied this approach to heterostructure LEFETs and demonstrated brightness exceeding 29000 cd m–2 at an EQE of 0.4% for a yellow emitter and 9600 cd m–2 at an EQE of 0.7% for a blue emitter. These results represent a significant advancement in organic optoelectronics and are an important milestone toward the realization of new applications in displays and electrically pumped lasing.

Citation

Chaudhry, M. U., Muhieddine, K., Wawrzinek, R., Li, J., Lo, S., & Namdas, E. B. (2018). Nano-Alignment in Semiconducting Polymer Films: A Path to Achieve High Current Density and Brightness in Organic Light Emitting Transistors. ACS Photonics, 5(6), 2137-2144. https://doi.org/10.1021/acsphotonics.8b00011

Journal Article Type	Article
Acceptance Date	Jan 3, 2018
Online Publication Date	Feb 27, 2018
Publication Date	Feb 27, 2018
Deposit Date	Sep 24, 2018
Publicly Available Date	Feb 27, 2019
Journal	ACS Photonics
Electronic ISSN	2330-4022
Publisher	American Chemical Society
Peer Reviewed	Peer Reviewed
Volume	5
Issue	6
Pages	2137-2144
DOI	https://doi.org/10.1021/acsphotonics.8b00011

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Copyright Statement
This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS photonics copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsphotonics.8b00011