Hole injection improvement by doping of organic material in copper phthalocyanine

Kyoung Soo Yook; Soon Ok Jeon; Chul Woong Joo; Jun Yeob Lee

Journal of Industrial and Engineering Chemistry, Vol.15, No.6, 907-909, November, 2009

DOI10.1016/j.jiec.2009.09.022 Export Citation

Hole injection improvement by doping of organic material in copper phthalocyanine

Kyoung Soo Yook, Soon Ok Jeon, Chul Woong Joo, and Jun Yeob Lee^†

Department of Polymer Science and Engineering, Dankook University, Jukjeon-dong, Suji-gu, Yongin-si, Gyeonggi-do 448-701, Republic of Korea

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Hole injection properties of copper phthalocyanine (CuPc) layer doped with hexaazatriphenylene. hexacarbonitrile (HAT) were studied by changing the doping concentration of HAT. Hole injection efficiency of CuPc layer was improved by doping of HAT as a p-dopant and a maximum current density was obtained at a HAT doping concentration of 10%. The use of HAT doped CuPc layer as a hole injection layer improved the current efficiency of green phosphorescent organic light-emitting diodes.

Keywords:Hexaazatriphenylene-hexacarbonitrile;Low driving voltage;Current efficiency

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[4] Mori T, Mitsuoka T, Ishii M, Fujikawa H, Taga Y, Appl. Phys. Lett., 80, 3895 (2002)

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[15] Lee JY, J. Ind. Eng. Chem., 14(5), 676 (2008)

[16] Lee JY, J. Ind. Eng. Chem., 14(6), 792 (2008)