Trap filled limit of conducting organic materials
2002 (English)In: Journal of Applied Physics, ISSN 0021-8979, E-ISSN 1089-7550, Vol. 92, no 7, 3752-3754 p.Article in journal (Refereed) Published
According to the approximate theory of transport in a conducting organic material containing exponential traps, ln J versus ln V plots are straight lines with slope l=T-C/T, where T-C is the characteristic temperature of the trap distribution. It is assumed in this theory that the concentration p(t) of trapped holes is much larger than the concentration p of free holes. Our experiments and recent literature results show that at high applied voltages the observed ln J versus ln V plots deviate from the straight lines and bend down. The numerical solution presented in this article shows that at high voltages the contribution of p to the space charge does not remain negligible. Calculated ln J versus ln V plots do bend down consistent with our experimental results. The current approaches the trap-filled limit asymptotically as the applied voltage approaches infinity.
Place, publisher, year, edition, pages
American Institute of Physics , 2002. Vol. 92, no 7, 3752-3754 p.
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-59159DOI: 10.1063/1.1503863ISI: 000178087600051OAI: oai:DiVA.org:liu-59159DiVA: diva2:350186