Transport of Photogenerated Charge Carriers in Polymer Semiconductors

Author

Gupta, Dhritiman ; Vidhyadhiraja, N.S. ; Narayan, K.S.

Author_Institution

Chem. & Phys. of Mater. Unit, Jawaharlal Nehru Centre for Adv. Sci. Res., Bangalore, India

Volume

97

Issue

9

fYear

2009

Firstpage

1558

Lastpage

1569

Abstract

The electrical transport of photogenerated charge carriers in disordered polymer semiconductors is reviewed. We emphasize that the mobility parameter in these disordered semiconducting systems is not a well-defined quantity. We highlight the utility of scanning probe photocurrent technique on variety of polymers in an asymmetric-electrode patterned configuration. The multiple length and time scales present in carrier transport processes are indicated by the large observed decay length scales in these systems.

Keywords

Organic electronics; carrier mobility; conducting polymers; organic semiconductors; photoconductivity; asymmetric-electrode patterned configuration; carrier transport processes; charge carrier photogeneration; decay length scales; disordered polymer semiconductors; electrical transport; mobility parameter; multiple length scales; scanning probe photocurrent technique; time scales; Charge carriers; Chemical technology; Excitons; Organic light emitting diodes; Organic materials; Organic semiconductors; Photoconductivity; Polymers; Semiconductor materials; Solar power generation; Lateral diffusion; organic semiconductors; photocarrier generation; transport;

fLanguage

English

Journal_Title

Proceedings of the IEEE

Publisher

ieee

ISSN

0018-9219

Type

jour

DOI

10.1109/JPROC.2009.2019228

Filename

5204656