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论文类型：期刊论文

发表时间：2009-05-10

发表刊物：CHINESE OPTICS LETTERS

收录刊物：SCIE、EI、ISTIC、Scopus

卷号：7

期号：5

页面范围：413-415

ISSN号：1671-7694

摘要：We demonstrate the near-infrared (NIR) organic light-emitting devices (OLEDs) based on copper hexadecafluorophthalocyanine (CuPcF16) doped into 2,2,2 ''-(1,3,5-benzenetriyl)tris-[1-phenyl-1H-benzimidazole] (TPBI). The device structure is ITO/NPB/TPBI:CuPcF16/BCP/Alq(3)/Al. Room-temperature electroluminescence is observed at about 1106 nm due to transitions from the first excited triplet state to the ground state (T-1-S-0) of CuPcF16. The result indicates that Forster and Dexter energy transfers play a minor role in these devices, while the direct charge trapping is the dominant mechanism. The absorption spectra of CuPcF16 solution is pyridine and vacuum sublimed films on quartz have also been investigated.