Suppression of roll-off characteristics of organic light-emitting diodes by narrowing current injection/transport area to 50 nm

Kyohei Hayashi, Hajime Nakanotani, Munetomo Inoue, Kou Yoshida, Oleksandr Mikhnenko, Thuc Quyen Nguyen, Chihaya Adachi

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Using e-beam nanolithography, the current injection/transport area in organic light-emitting diodes (OLEDs) was confined into a narrow linear structure with a minimum width of 50 nm. This caused suppression of Joule heating and partial separation of polarons and excitons, so the charge density where the electroluminescent efficiency decays to the half of the initial value (J0) was significantly improved. A device with a narrow current injection width of 50 nm exhibited a J0 that was almost two orders of magnitude higher compared with that of the unpatterned OLED.

Original languageEnglish
Article number093301
JournalApplied Physics Letters
Volume106
Issue number9
DOIs
Publication statusPublished - Mar 2 2015

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light emitting diodes
retarding
injection
Joule heating
polarons
excitons
decay

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Suppression of roll-off characteristics of organic light-emitting diodes by narrowing current injection/transport area to 50 nm. / Hayashi, Kyohei; Nakanotani, Hajime; Inoue, Munetomo; Yoshida, Kou; Mikhnenko, Oleksandr; Nguyen, Thuc Quyen; Adachi, Chihaya.

In: Applied Physics Letters, Vol. 106, No. 9, 093301, 02.03.2015.

Research output: Contribution to journalArticle

Hayashi, Kyohei ; Nakanotani, Hajime ; Inoue, Munetomo ; Yoshida, Kou ; Mikhnenko, Oleksandr ; Nguyen, Thuc Quyen ; Adachi, Chihaya. / Suppression of roll-off characteristics of organic light-emitting diodes by narrowing current injection/transport area to 50 nm. In: Applied Physics Letters. 2015 ; Vol. 106, No. 9.
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