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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/9843

Title: Formation of Ohmic Carrier Injection at Anode/organic Interfaces and Carrier Transport Mechanisms of Organic Thin Films
Authors: Matsushima, Toshinori
Jin, Guang-He
Kanai, Yoshihiro
Yokota, Tomoyuki
Kitada, Seiki
Kishi, Toshiyuki
Murata, Hideyuki
Keywords: Space-charge-limited current
molybdenum oxide
Organic hole-transport materials
Organic light-emitting diodes
Hole-injection layer
Issue Date: 2009
Publisher: Materials Research Society
Magazine name: Materials Research Society Symposium Proceedings
Volume: 1154
Start page: 1154-B10-92
Abstract: We have shown that hole mobilities of a wide variety of organic thin films can be estimated using a steady-state space-charge-limited current (SCLC) technique due to formation of Ohmic hole injection by introducing a very thin hole-injection layer of molybdenum oxide (MoO_3) between an indium tin oxide anode layer and an organic hole-transport layer. Organic hole-transport materials used to estimate hole mobilities are 4,4',4"-tris(N-3-methylphenyl-Nphenyl-amino)triphenylamine (m-MTDATA), 4,4',4"-tris(N-2-naphthyl-N-phenylamino)triphenylamine (2-TNATA), rubrene, N,N´-di(m-tolyl)-N,N´-diphenylbenzidine (TPD), and N,N´-diphenyl-N,N´-bis(1-naphthyl)-1,1´-biphenyl-4,4´-diamine (α-NPD). These materials are found to have electric-field-dependent hole mobilities. While field dependence parameters(β) estimated from SCLCs are almost similar to those estimated using a widely used time-of-flight(TOF) technique, zero field SCLC mobilities (μ_0) are about one order of magnitude lower than zero field TOF mobilities.
Rights: Copyright (C) 2009 Materials Research Society. It is posted here by permission of the Materials Research Society. Toshinori Matsushima, Guang-He Jin, Yoshihiro Kanai, Tomoyuki Yokota, Seiki Kitada, Toshiyuki Kishi, and Hideyuki Murata, Materials Research Society Symposium Proceedings, 1154, 2009, 1154-B10-92. http://www.mrs.org/
URI: http://hdl.handle.net/10119/9843
Material Type: publisher
Appears in Collections:c11-1. 会議発表論文 (Conference Papers)

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