Characteristics of Electroluminescence Based on Zn Complexes

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概要

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• Recently, organic light-emitting diodes (OLEDs) have widely been used as one of the information display techniques. We synthesized 2-(2-hydroxyphenyl)benzoxazole [Zn(HPB)2], (1,10-phenanthroline)(8-hydroxyquinoline) [Zn(phen)q] and (2-(2-hydroxyphenyl)benzoxazole)(8-hydoxyquinoline) [Zn(HPB)q]. The ionization potential (IP) and electron affinity (EA) of Zn complexes were investigated by cyclic voltammetry (CV). The EAs of Zn(HPB)2, Zn(HPB)q, and Zn(phen)q were determined to be 2.8, 3.5, and 3.2 eV, respectively. Moreover, the IPs of Zn(HPB)2, Zn(HPB)q, and Zn(phen)q are 6.5, 6.8, and 7.3 eV, respectively. The EL spectra of Zn(HPB)2, Zn(HPB)q, and Zn(phen)q were observed at the wavelengths of 455, 532, and 535 nm, respectively. We used Zn(HPB)2 and Zn(HPB)q as hole-blocking materials and Zn(phen)q as an electron-transporting material. The efficiency of the device with Zn(HPB)2 increased compared with that of the device without it. The device with Zn(phen)q exhibited an improved performance Alq3 as an electron-transporting material.

• 2006-04-30

著者

• KWON Young-Soo

  Department of Electrical Engineering & NTRC, Dong-A University

• Lee Burm-jong

  Department Of Chemistry & And Institute Of Functional Materials Inje University

• Jang Yoon-ki

  Department Of Electrical Of Engineering & Ciipms Dong-a University

• Kwon Oh-kwan

  Department Of Electrical Engineering & Ciipms Dong-a University

• KIM Won-Sam

  Department of Chemistry & BPRC, Inje University

• Kim Dong-eun

  Department Of Bioscience And Biotechnology Konkuk University

• Kim Dong-Eun

  Department of Electrical Engineering and CIIPMS, Dong-A University, 840 Hadan 2-dong, Saha-gu, Busan 604-714, Korea

• Kwon Oh-Kwan

  Department of Electrical Engineering and CIIPMS, Dong-A University, 840 Hadan 2-dong, Saha-gu, Busan 604-714, Korea

• Jang Yoon-Ki

  Department of Electrical Engineering and CIIPMS, Dong-A University, 840 Hadan 2-dong, Saha-gu, Busan 604-714, Korea

• Kim Won-Sam

  Department of Electrical Engineering and CIIPMS, Dong-A University, 840 Hadan 2-dong, Saha-gu, Busan 604-714, Korea

• Kwon Young-Soo

  Department of Electrical Engineering and CIIPMS, Dong-A University, 840 Hadan 2-dong, Saha-gu, Busan 604-714, Korea

• Lee Burm-Jong

  Department of Chemistry and BPRC, Inje University, 607 Obang-dong, Kimhae, Kimhae 621-749, Korea

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