Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/33931
Title: Influence of the deposition temperature on the structure and performance of tris(8-hydroxyquinoline) aluminum based flexible organic light-emitting devices
Authors: Wang, GF
Tao, XM 
Huang, HM
Keywords: AFM
Alq3
Organic light-emitting device
PVD
Issue Date: 2007
Publisher: North-Holland
Source: Applied surface science, 2007, v. 253, no. 10, p. 4463-4466 How to cite?
Journal: Applied surface science 
Abstract: Based on indium tin oxide (ITO)/N,N′diphenyl-N-N′-di(m-tdyl) benzidine (TPD)/Alq3/Al structure, flexible OLEDs on polyethylene terephthalate (PET) substrates were fabricated by physical vapor deposition (PVD) method. Tris(8-hydroxyquinoline)aluminum (Alq3) films were deposited at 90, 120 and 150 °C to examine the influence of the deposition temperature on the structure and performance of OLEDs. Electroluminescence (EL) spectra and current-voltage-luminance (I-V-L) characteristics of the OLEDs were examined. It was found that the device fabricated at a high temperature had a higher external efficiency and longer lifetime. Atomic force microscope (AFM) was adopted to characterize the surface morphology of ITO/TPD/Alq3. The higher uniform morphology of the Alq3 formed at high temperature might contribute to the performance improvement of the OLEDs.
URI: http://hdl.handle.net/10397/33931
ISSN: 0169-4332
EISSN: 1873-5584
DOI: 10.1016/j.apsusc.2006.09.005
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