Sungho Nam
Efficient and Stable Solution-Processed Organic Light Emitting Transistors using a High-k Dielectric
Nam, Sungho; Chaudhry, Mujeeb Ullah; Tetzner, Kornelius; Pearson, Christopher; Groves, Chris; Petty, Michael C.; Anthopoulos, Thomas D.; Bradley, Donal D.C.
Authors
Dr Mujeeb Chaudhry mujeeb.u.chaudhry@durham.ac.uk
Associate Professor
Kornelius Tetzner
Christopher Pearson
Professor Chris Groves chris.groves@durham.ac.uk
Professor
Michael C. Petty
Thomas D. Anthopoulos
Donal D.C. Bradley
Abstract
We report the development of highly efficient and stable solution-processed organic light emitting transistors (OLETs) that combine a polymer heterostructure with the transparent high-k dielectric poly(vinylidenefluoride0.62-trifluoroethylene0.31-chlorotrifluoroethylene0.7) (P(VDF-TrFE-CTFE)). The polymer heterostructure comprises of the poly[4-(4,4- dihexadecyl-4H-cyclopenta[1,2-b:5,4-b’]dithiophen-2-yl)-alt-[1,2,5]thiadiazolo[3,4- c]pyridine] (PCDTPT) and Super Yellow as charge transporting and light emitting layers, respectively. Device characterization shows that the use of P(VDF-TrFE-CTFE) leads to larger channel currents (≈2 mA) and lower operating voltages (-35 V) than for previously reported polymer based OLETs. Furthermore, the combined transparency of the dielectric and gate electrode, results in efficient bottom emission with external quantum efficiency of ≈0.88 % at a luminance L ≥ 2000 cd m−2. Importantly, the resulting OLETs exhibit excellent shelf life and operational stability. The present work represents a significant step forward in the pursuit of all-solution-processed OLET technology for lighting and display applications.
Citation
Nam, S., Chaudhry, M. U., Tetzner, K., Pearson, C., Groves, C., Petty, M. C., …Bradley, D. D. (2019). Efficient and Stable Solution-Processed Organic Light Emitting Transistors using a High-k Dielectric. ACS Photonics, 6(12), 3159-3165. https://doi.org/10.1021/acsphotonics.9b01265
Journal Article Type | Article |
---|---|
Acceptance Date | Nov 12, 2019 |
Online Publication Date | Nov 12, 2019 |
Publication Date | Dec 18, 2019 |
Deposit Date | Nov 13, 2019 |
Publicly Available Date | Nov 12, 2020 |
Journal | ACS Photonics |
Electronic ISSN | 2330-4022 |
Publisher | American Chemical Society |
Peer Reviewed | Peer Reviewed |
Volume | 6 |
Issue | 12 |
Pages | 3159-3165 |
DOI | https://doi.org/10.1021/acsphotonics.9b01265 |
Files
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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.9b01265
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