Near-infrared electroluminescent diodes based on copper hexadecafluorophthalocyanine CuPcF_(16)

• 作 者: 范昭奇 程传辉 于书坤 叶开其 夏道成 白青龙 管和松 杜国同
• 机 构: School of Physics and Optoelectronic Technology,Dalian University of Technology,State Key Laboratory
• 出 处: Chinese Optics Letters
• 发表日期: 2009年05期
• 关键词: Dexter excited pyridine trapping quartz luminescence Room transitions minor have

We demonstrate the near-infrared (NIR) organic light-emitting devices (OLEDs) based on copper hexade-cafluorophthalocyanine (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/Alq3/Al. Room-temperature electro-luminescence is observed at about 1106 nm due to transitions from the first excited triplet state to the ground state (T1-S0) of CuPcF16. The result indicates that Frster 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 in pyridine and vacuum sublimed films on quartz have also been investigated.

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 / Alq3 / Al. Room-temperature electro-luminescence was observed at about 1106 nm due to transitions from the first excited triplet state to The ground state (T1-S0) of CuPcF16. The result indicates that Frster 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 in pyridine and vacuum sublimed films on quartz have also been investigated.