Prediction of the current versus voltage behavior of devices based on organic semiconductor host-guest systems
2009 (English)In: Organic electronics, ISSN 1566-1199, E-ISSN 1878-5530, Vol. 10, no 1, 95-106 p.Article in journal (Refereed) Published
Organic semiconductor blends are commonly used in organic based (opto-)electronic devices. They are composed of two types of (macro-) molecules, referredto as the guest and host. To achieve optimum device operation, the chemicalnature, electronic structure, molecular order and the relative concentration of theguests and host are crucial. Here, we present simulation results of the currentdensity versus the voltage (J-V) behavior of a two-terminal device based on avariable-range hopping model in which the electronic states of the guest and hostare represented by two Gaussian distributions. The J-V behavior is investigatedfor various energetic mismatches between guest and host states, widths of thedistribution as well as the guest concentration. Finally, a simple tool enablingeasy prediction of the J-V behavior of organic host-guest diodes is derived.
Place, publisher, year, edition, pages
2009. Vol. 10, no 1, 95-106 p.
Host–guest system, Diode, Trapping, Modeling, Hopping, Gaussian density of states
Other Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:liu:diva-14837DOI: 10.1016/j.orgel.2008.10.006OAI: oai:DiVA.org:liu-14837DiVA: diva2:25328