TY - GEN
T1 - Carrier transport dependence on phosphorescent materials in polymer based OLEDs
AU - Motomura, Genichi
AU - Suzuki, Mitsunori
AU - Shimizu, Takahisa
AU - Fujikake, Hideo
PY - 2011/12/1
Y1 - 2011/12/1
N2 - The carrier transport properties in the emissive layer of phosphorescent polymer organic light-emitting diodes (OLEDs) were observed by time-of-flight (TOF) mobility measurements. The hole and electron mobilities in carrier transport polymer without iridium complexes were measured with high levels, 3 × 10-4 cm2/Vs (hole) and 1 × 10-3 cm2/Vs (electron), of non-dispersive transport. The hole and/or electron transport properties were degraded when the iridium complexes were included in the phosphorescent polymers. The complexes acted as a trap in the phosphorescent polymers when the energy levels of the iridium complexes were lower than that of the carrier transport polymer.
AB - The carrier transport properties in the emissive layer of phosphorescent polymer organic light-emitting diodes (OLEDs) were observed by time-of-flight (TOF) mobility measurements. The hole and electron mobilities in carrier transport polymer without iridium complexes were measured with high levels, 3 × 10-4 cm2/Vs (hole) and 1 × 10-3 cm2/Vs (electron), of non-dispersive transport. The hole and/or electron transport properties were degraded when the iridium complexes were included in the phosphorescent polymers. The complexes acted as a trap in the phosphorescent polymers when the energy levels of the iridium complexes were lower than that of the carrier transport polymer.
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U2 - 10.1557/opl.2012.266
DO - 10.1557/opl.2012.266
M3 - Conference contribution
AN - SCOPUS:84879369177
SN - 9781627482202
T3 - Materials Research Society Symposium Proceedings
SP - 60
EP - 65
BT - Charge Generation/Transport in Organic Semiconductor Materials
T2 - 2011 MRS Fall Meeting
Y2 - 28 November 2011 through 2 December 2012
ER -