Interface and material considerations of OLEDs

Yoshiharu Sato; Tomoyuki Ogata; Shouko Ichinosawa; Masayo Fugono; Hiroyuki Kanai

doi:10.1117/12.372710

17 December 1999 Interface and material considerations of OLEDs

Yoshiharu Sato, Tomoyuki Ogata, Shouko Ichinosawa, Masayo Fugono, Hiroyuki Kanai

Author Affiliations +

Proceedings Volume 3797, Organic Light-Emitting Materials and Devices III; (1999) https://doi.org/10.1117/12.372710
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

Three interfaces, anode interface, hole blocking layer and cathode interface were considered mainly from the viewpoint of materials. Vinyl polymers containing triphenylamine as a side group were investigated as an ITO buffer layer. When these polymers were doped with strong acceptor, they lowered operation voltage of OLED and also improved the thermal stability. Employment of high Tg hole transport material was also found effective for the thermally stable EL characteristics. Hole blocking material with a wider optical gap improved color purity of blue-emitting device. Various inorganic compounds were examined as a cathode interface layer to demonstrate that MgF2 was effective to improve operation lifetime of OLED.

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Yoshiharu Sato, Tomoyuki Ogata, Shouko Ichinosawa, Masayo Fugono, and Hiroyuki Kanai "Interface and material considerations of OLEDs", Proc. SPIE 3797, Organic Light-Emitting Materials and Devices III, (17 December 1999); https://doi.org/10.1117/12.372710

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