TY - JOUR
T1 - An organic light emitting device employing transparent rutile TiO 2 as an anode
AU - Nakano, Masaki
AU - Fukumura, Tomoteru
AU - Toyosaki, Hidemi
AU - Ueno, Kazunori
AU - Kawasaki, Masashi
PY - 2006/10
Y1 - 2006/10
N2 - Organic light emitting devices (OLEDs) using a transparent semiconductor rutile TÍO2 film on r-sapphire substrate as an anode shows fine surface emission. The OLED structure is TiO2/poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS)/N,N′-Di-[(1-naphthalenyl)-N,N′- diphenyl]-(l,l'-biphenyl)-4,4'-diamine (α-NPD)/tris(8-hydroxyquinoline) aluminum (Alq3)/LiF/Al. The obtained maximum luminance and current efficiency are 1340 cd/m2 at 21.0 V and 1.6 cd/A at 15.0 V, respectively. Current efficiency and turn-on voltage of the OLEDs systematically depend on the resistivity of the TiO2 anode. This trend can be explained by dependence of hole injection efficiency on the resistivity.
AB - Organic light emitting devices (OLEDs) using a transparent semiconductor rutile TÍO2 film on r-sapphire substrate as an anode shows fine surface emission. The OLED structure is TiO2/poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS)/N,N′-Di-[(1-naphthalenyl)-N,N′- diphenyl]-(l,l'-biphenyl)-4,4'-diamine (α-NPD)/tris(8-hydroxyquinoline) aluminum (Alq3)/LiF/Al. The obtained maximum luminance and current efficiency are 1340 cd/m2 at 21.0 V and 1.6 cd/A at 15.0 V, respectively. Current efficiency and turn-on voltage of the OLEDs systematically depend on the resistivity of the TiO2 anode. This trend can be explained by dependence of hole injection efficiency on the resistivity.
KW - Alq
KW - Anode
KW - Hole injection
KW - Organic light emitting device
KW - Oxide semiconductor
KW - TiO
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U2 - 10.1.143/JJAP.45.L1061
DO - 10.1.143/JJAP.45.L1061
M3 - Article
AN - SCOPUS:34547829426
SN - 0021-4922
VL - 45
SP - L1061-L1063
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
IS - 37-41
ER -