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D. Kolosov, V. Adamovich, P. I. Djurovich, M. E. Thompson and C. Adachi, “1,8-Naphthalimides in Phosphores- cent Organic Leds: The Interplay Between Dopant, Exciplex, and Host Emission,” Journal of the American Chemical Society, Vol. 124, No. 33, 2002, pp. 9945-9954. doi:10.1021/ja0263588

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• TITLE: Electron Transport Materials: Synthesis, Properties and Device Performance

  AUTHORS: Lelia Cosimbescu, Liang Wang, Monte L. Helm, Evgueni Polikarpov, James S. Swensen, Asanga B. Padmaperuma

  KEYWORDS: Electron Transport; OLED; Triplet Energy

  JOURNAL NAME: International Journal of Organic Chemistry, Vol.2 No.2, June 27, 2012

  ABSTRACT: We report the design, synthesis and characterization, thermal and photophysical properties of two silane based electron transport materials, dibenzo[b,d]thiophen-2-yltriphenylsilane (Si?87) and (dibenzo[b,d]thiophen-2-yl)diphenylsilane (Siφ88) and their performance in blue organic light emitting devices (OLEDs). The utility of these materials in blue OLEDs with iridium (III) bis[(4,6-difluorophenyl)-pyridinato-N,C2’]picolinate (Firpic) as the phosphorescent emitter was demonstrated. Using the silane Siφ87 as the electron transport material (ETm), an EQE of 18.2% was obtained, with a power efficiency of 24.3 lm/W (5.8V at 1 mA/cm2), in a heterostructure. When Siφ88 is used, the EQE is 18.5% with a power efficiency of 26.0 lm/W (5.5V at 1 mA/cm2).