Anisotropic carrier transport in organic semiconductors studied by time-resolved optical second-harmonic generation

Author

Manaka, Toshiki ; Iwamoto, Mitsugu

Author_Institution

Dept. of Phys. Electron., Tokyo Inst. of Technol., Tokyo, Japan

fYear

2013

fDate

2-5 July 2013

Firstpage

231

Lastpage

234

Abstract

Anisotropic carrier transport characteristics in single crystalline grains of dip-coated TIPS pentacene films were studied using the time-resolved microscopic second harmonic generation (TRM-SHG). TRM-SHG imaging successfully visualized a difference in the transient carrier motion along various transport direction in ab-plane of TIPS pentacene single crystal. Mobility anisotropy observed in ab-plane was estimated as μ_PARA /μ_PERP = 3. We also applied this technique to visualize the anisotropic carrier transport in oriented organic polymer semiconductors.

Keywords

carrier mobility; dip coating; optical harmonic generation; organic semiconductors; polymer films; semiconductor thin films; time resolved spectra; TIPS pentacene single crystal; TRM-SHG imaging; anisotropic carrier transport; dip-coated TIPS pentacene films; mobility anisotropy; oriented organic polymer semiconductors; single crystalline grains; time-resolved microscopic optical second harmonic generation; transient carrier motion; Anisotropic magnetoresistance; Crystals; Electrodes; OFETs; Pentacene; Transient analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Active-Matrix Flatpanel Displays and Devices (AM-FPD), 2013 Twentieth International Workshop on

Conference_Location

Kyoto

Type

conf

Filename

6617823