Title :
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
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;
Journal_Title :
Proceedings of the IEEE
DOI :
10.1109/JPROC.2009.2019228
