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Three-terminal light-emitting device with adjustable emission color

Cherpak, Vladyslav and Gassmann, Andrea and Stakhira, Pavlo and Volyniuk, Dmytro and Grazulevicius, Juozas V. and Michaleviciute, Asta and Tomkeviciene, Ausra and Barylo, Grygoriy and von Seggern, Heinz (2014):
Three-terminal light-emitting device with adjustable emission color.
In: Organic Electronics, 15 (7), Elsevier Science Publishing, pp. 1396-1400, ISSN 15661199,
[Online-Edition: http://dx.doi.org/10.1016/j.orgel.2014.04.002],
[Article]

Abstract

A three-terminal organic light-emitting device with a periodic interrupted middle electrode is developed to allow for an adjustable emission color. The emission results from three independent light-emitting diodes with one diode utilizing exciplex emission. An equivalent electrical circuit is suggested taking the current–voltage characteristics and the direction of current flow through the organic structure into account. Two diodes are formed between the embedded middle electrode and the LiF/Al top and ITO bottom electrode, respectively, and the third diode utilizes that part of the device without the middle-electrode exhibiting exciplex emission. It will be shown that the spectrum of the emitted light can be tuned from blue to orange by controlling the applied potentials to the device terminals.

Item Type: Article
Erschienen: 2014
Creators: Cherpak, Vladyslav and Gassmann, Andrea and Stakhira, Pavlo and Volyniuk, Dmytro and Grazulevicius, Juozas V. and Michaleviciute, Asta and Tomkeviciene, Ausra and Barylo, Grygoriy and von Seggern, Heinz
Title: Three-terminal light-emitting device with adjustable emission color
Language: English
Abstract:

A three-terminal organic light-emitting device with a periodic interrupted middle electrode is developed to allow for an adjustable emission color. The emission results from three independent light-emitting diodes with one diode utilizing exciplex emission. An equivalent electrical circuit is suggested taking the current–voltage characteristics and the direction of current flow through the organic structure into account. Two diodes are formed between the embedded middle electrode and the LiF/Al top and ITO bottom electrode, respectively, and the third diode utilizes that part of the device without the middle-electrode exhibiting exciplex emission. It will be shown that the spectrum of the emitted light can be tuned from blue to orange by controlling the applied potentials to the device terminals.

Journal or Publication Title: Organic Electronics
Volume: 15
Number: 7
Publisher: Elsevier Science Publishing
Uncontrolled Keywords: Organic light-emitting device, Exciplex emission, Adjustable emission color
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Electronic Materials
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 25 Mar 2015 13:09
Official URL: http://dx.doi.org/10.1016/j.orgel.2014.04.002
Identification Number: doi:10.1016/j.orgel.2014.04.002
Funders: This work was partially supported by the Research Council of Lithuania and Ukrainian Fundamental Researches State Fund and one of the authors (V. Cherpak) highly acknowledges the support of the German Academic Exchange Service DAAD., This research was supported by FP7 REGPOT-2012-2013-1 ICT Project CEOSeR (Grant Agreement 316010).
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