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Perylene Diimide as the Black-Layer Material of the OLEDs

Published online by Cambridge University Press:  26 February 2011

Jiun-Haw Lee
Affiliation:
[email protected], National Taiwan Univ., Electrial-Optical Engineering, 1, Sec. 4 Roosevelt Rd., Taipei, 10617, Taiwan
Kai-Hsiang Chuang
Affiliation:
[email protected], National Taiwan Univ., Graduate Institute of Electro-Optical Engineering, 1, Sec. 4 Roosevelt Rd., Taipei, 10617, Taiwan
Yu-Hsuan Ho
Affiliation:
[email protected], National Taiwan Univ., Graduate Institute of Electro-Optical Engineering, 1, Sec. 4 Roosevelt Rd., Taipei, 10617, Taiwan
Chi-Feng Lin
Affiliation:
[email protected], National Taiwan Univ., Graduate Institute of Electro-Optical Engineering, 1, Sec. 4 Roosevelt Rd., Taipei, 10617, Taiwan
Chun-Chieh Chao
Affiliation:
[email protected], National Taiwan Univ., Department of Chemistry, 1, Sec. 4 Roosevelt Rd., Taipei, 10617, Taiwan
Man-Kit Leung
Affiliation:
[email protected], National Taiwan Univ., Department of Chemistry, 1, Sec. 4 Roosevelt Rd., Taipei, 10617, Taiwan
Cheng-Yu Li
Affiliation:
[email protected], National Taiwan Univ., Department of Materials Science & Engineerin, 1, Sec. 4 Roosevelt Rd., Taipei, 10617, Taiwan
Hsuen-Li Chen
Affiliation:
[email protected], National Taiwan Univ., Department of Materials Science & Engineerin, 1, Sec. 4 Roosevelt Rd., Taipei, 10617, Taiwan
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Abstract

In this paper, we use a perylene diimide derivative serving as a destructive and an absorption layer of the “black cathode” of an organic light-emitting device (OLED). A thin and semitransparent metal between the electron transport layer and the perylene diimide is used for better electron injection and also serves as the destructive interference. The thickness of such layer is critical since thinner metal results in lower reflectance, but higher diving voltage due to worse electron injection. To enhance the electron injection capability, the thickness of the thin metal increases which in turns to increase the reflectance. Here, we used a double-metal configuration to decrease the reflectance and maintain the electron injection capability at the same time.

Type
Research Article
Copyright
Copyright © Materials Research Society 2007

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References

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