Transparent organic light-emitting diodes using resonant tunneling double barrier structures

Seung Yoon Ryu, Sung Jin Jo, Chang Su Kim, Sang Hun Choi, Joo Hyon Noh, Hong Koo Baik, Hee Seong Jeong, Dong Won Han, Seung Yong Song, Kyu Sung Lee

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

A semitransparent cathode of indium tin oxide (ITO)/Ag/ITO was developed as a resonant tunneling double barrier structure for transparent organic light-emitting diodes. A weak negative differential resistance was observed in devices using a 100 nm thick ITO/Ag/ITO layer as a cathode in combination with a thin LiFAl layer. The current injection of devices was dominated by resonant tunneling, which induced no luminance at low voltage. This was achieved by employing an e-beam evaporated ITO/Ag/ITO cathode due to the double quantum barriers of ITO and the quantum well of Ag. The authors also applied the multilayer cathode to small molecule devices, which showed the same resonant tunneling currents.

Original languageEnglish
Article number093515
JournalApplied Physics Letters
Volume91
Issue number9
DOIs
Publication statusPublished - 2007 Sep 7

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resonant tunneling
indium oxides
tin oxides
light emitting diodes
cathodes
luminance
low voltage
quantum wells
injection
molecules

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Ryu, Seung Yoon ; Jo, Sung Jin ; Kim, Chang Su ; Choi, Sang Hun ; Noh, Joo Hyon ; Baik, Hong Koo ; Jeong, Hee Seong ; Han, Dong Won ; Song, Seung Yong ; Lee, Kyu Sung. / Transparent organic light-emitting diodes using resonant tunneling double barrier structures. In: Applied Physics Letters. 2007 ; Vol. 91, No. 9.
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Ryu, SY, Jo, SJ, Kim, CS, Choi, SH, Noh, JH, Baik, HK, Jeong, HS, Han, DW, Song, SY & Lee, KS 2007, 'Transparent organic light-emitting diodes using resonant tunneling double barrier structures', Applied Physics Letters, vol. 91, no. 9, 093515. https://doi.org/10.1063/1.2776347

Transparent organic light-emitting diodes using resonant tunneling double barrier structures. / Ryu, Seung Yoon; Jo, Sung Jin; Kim, Chang Su; Choi, Sang Hun; Noh, Joo Hyon; Baik, Hong Koo; Jeong, Hee Seong; Han, Dong Won; Song, Seung Yong; Lee, Kyu Sung.

In: Applied Physics Letters, Vol. 91, No. 9, 093515, 07.09.2007.

Research output: Contribution to journalArticle

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