Charge transport in amorphous molecular materials

Yasuhiko Shirota; Satoyuki Nomura; Hiroshi Kageyama

doi:10.1117/12.332606

16 December 1998 Charge transport in amorphous molecular materials

Yasuhiko Shirota, Satoyuki Nomura, Hiroshi Kageyama

Proceedings Volume 3476, Organic Light-Emitting Materials and Devices II; (1998) https://doi.org/10.1117/12.332606
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

Abstract

Charge transport in the glassy state of a variety of low molecular-weight organic compounds has ben studied. The hole drift mobility of the molecular glass was found to be of the order of 10^-6 approximately 10^-2 cm²V^-1s^-1 at an electric field of 1.0 by 10⁵ Vcm^-1 at room temperature, being higher than those of polymers and molecularly-doped polymer systems. The electric-field and temperature dependencies of charge- carrier drift mobility were analyzed in terms of the disorder formalism. The negative electric-field dependence of charge-carrier drift mobility was observed for the first time for the molecular glass. The relationship between molecular structure and charge-transport properties is discussed.

Citation Download Citation

Yasuhiko Shirota, Satoyuki Nomura, and Hiroshi Kageyama "Charge transport in amorphous molecular materials", Proc. SPIE 3476, Organic Light-Emitting Materials and Devices II, (16 December 1998); https://doi.org/10.1117/12.332606

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