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19 May 2000 Organic blue-light-emitting diode with phenylbenzeneamine derivative
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Proceedings Volume 3939, Organic Photonic Materials and Devices II; (2000)
Event: Symposium on Integrated Optoelectronics, 2000, San Jose, CA, United States
The authors investigated the electrical and optical properties of the organic light-emitting-diode (OLED) with a phenylbenzeneamine derivative (MDTPA). The PL and EL of MDTPA thin film were blue. However, the EL of the device of indium-tin-oxide (ITO)/MDTPA/aluminum quinoline (Alq3)/metal was not due to the emission from MDTPA, but was the emission from Alq3. It can be explained by that the emission region is formed in Alq3 layer since MDTPA has excellent hole transportation. The authors introduced an oxadiazole dimer (OXD) as a carrier blocking layer between MDTPA and Alq3 layers in order to from the emission region in MDTPA layer. This multi-layer OLED was found to have a high performance for a blue-light-emitting EL device. Its luminescence was over 3000 cd/m2 at the current density of 100 mA/cm2. The EL threshold voltage was about 5 V. Their EL efficiency was about 2 lm/W.
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Kaname Imaizumi, Tatsuo Mori, and Teruyoshi Mizutani "Organic blue-light-emitting diode with phenylbenzeneamine derivative", Proc. SPIE 3939, Organic Photonic Materials and Devices II, (19 May 2000);

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