TITLE

Electronic and chemical properties of molybdenum oxide doped hole injection layers in organic light emitting diodes

AUTHOR(S)
Wu, Chih-I; Lin, Chang-Ting; Lee, Guan-Ru; Cho, Ting-Yi; Wu, Chung-Chih; Pi, Tun-Wen
PUB. DATE
February 2009
SOURCE
Journal of Applied Physics;Feb2009, Vol. 105 Issue 3, pN.PAG
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The origins of barrier lowering leading to high efficient organic light emitting devices with incorporation of molybdenum oxide (MoOx) in anode structures are investigated. Ultraviolet and x-ray photoemission spectra reveal that p-type doping effects in the organic films and carrier concentration increase at the anode interfaces cause the hole injection barrier lowering. The gap states, which help carrier injection from the anodes, resulted from the oxygen deficiency in MoOx due to the interaction of organic materials and MoOx.
ACCESSION #
36534252

 

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