Investigation of charge transport in organic polymer donor/acceptor photovoltaic materials
Document Type
Article
Publication Date
1-1-2014
Abstract
pi-conjugated organic semiconductors have long been used as either holes or electrons transport materials. Recently, ambipolar charge carrier transport in these materials have been reported in many investigations. In this paper, we report on the basis of experimental results that the organic semiconductor (donor/acceptor) materials can be as good electrons transporters as these materials are holes transporters. In our study, the solution-processed unipolar diodes based on organic materials P3HT, VOPCPhO, and their blends with PCBM have been fabricated. The I-V characteristics of these diodes have been analyzed in the space-charge-limited current regime. The values of the electron and hole mobilities for the materials were found in the range of 10(-4)-10(-5)cm(2)/Vs.
Keywords
Organic donor, acceptor materials, bipolar charge transport, mobility
Publication Title
Journal of Modern Optics
Volume
61
Issue
21, SI
Publisher
Taylor & Francis
Publisher Location
4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND