Carrier transport dependence on phosphorescent materials in polymer based OLEDs

Genichi Motomura; Mitsunori Suzuki; Takahisa Shimizu; Hideo Fujikake

doi:10.1557/opl.2012.266

Carrier transport dependence on phosphorescent materials in polymer based OLEDs

Genichi Motomura, Mitsunori Suzuki, Takahisa Shimizu, Hideo Fujikake

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

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.

Original language	English
Title of host publication	Charge Generation/Transport in Organic Semiconductor Materials
Pages	60-65
Number of pages	6
DOIs	https://doi.org/10.1557/opl.2012.266
Publication status	Published - 2011 Dec 1
Externally published	Yes
Event	2011 MRS Fall Meeting - Boston, MA, United States Duration: 2011 Nov 28 → 2012 Dec 2

Publication series

Name	Materials Research Society Symposium Proceedings
Volume	1402
ISSN (Print)	0272-9172

Other

Other	2011 MRS Fall Meeting
Country	United States
City	Boston, MA
Period	11/11/28 → 12/12/2

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1557/opl.2012.266

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Motomura, G., Suzuki, M., Shimizu, T., & Fujikake, H. (2011). Carrier transport dependence on phosphorescent materials in polymer based OLEDs. In Charge Generation/Transport in Organic Semiconductor Materials (pp. 60-65). (Materials Research Society Symposium Proceedings; Vol. 1402). https://doi.org/10.1557/opl.2012.266

Carrier transport dependence on phosphorescent materials in polymer based OLEDs. / Motomura, Genichi; Suzuki, Mitsunori; Shimizu, Takahisa; Fujikake, Hideo.

Charge Generation/Transport in Organic Semiconductor Materials. 2011. p. 60-65 (Materials Research Society Symposium Proceedings; Vol. 1402).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Motomura, G, Suzuki, M, Shimizu, T & Fujikake, H 2011, Carrier transport dependence on phosphorescent materials in polymer based OLEDs. in Charge Generation/Transport in Organic Semiconductor Materials. Materials Research Society Symposium Proceedings, vol. 1402, pp. 60-65, 2011 MRS Fall Meeting, Boston, MA, United States, 11/11/28. https://doi.org/10.1557/opl.2012.266

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abstract = "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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