✦ LIBER ✦

Transparent Al/WO3/Au film as anode for high efficiency organic light-emitting diodes

✍ Scribed by H.M. Zhang; Wallace C.H. Choy

Publisher: Elsevier Science
Year: 2008
Tongue: English
Weight: 223 KB
Volume: 9
Category: Article
ISSN: 1566-1199
DOI: 10.1016/j.orgel.2008.07.001

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✦ Synopsis

A transparent Al/WO 3 /Au anode is introduced to fabricate high efficiency organic lightemitting devices (OLEDs). By optimizing the thicknesses of each layers of the Al/WO 3 /Au structure, the transmittance of Al(7 nm)/WO 3 (3 nm)/Au(13 nm) has reached over 55%. Concerning the performance of OLEDs using the optimized anode, the electroluminescence (EL) current efficiency and brightness are enhanced and the EL spectrum is greatly narrowed as compared to the OLEDs using indium-tin-oxide (ITO) as the anode. The results indicate that the metal/metal oxide/metal transparent electrode is a good structure for the anode of high performance OLEDs. In addition, Al/WO 3 /Au can function as a composite transparent electrode for top-emitting OLEDs.

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