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Increased conductivity of a hole transport layer due to oxidation by a molecular nanomagnet

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Valencià Castellano

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Increased conductivity of a hole transport layer due to oxidation by a molecular nanomagnet

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Cheylan, S.; Puigdollers, J.; Bolink, Henk; Coronado Miralles, Eugenio; Voz, C.; Alcubilla, R.; Badenes, G.

Aquest document és un/a article, creat/da en: 2008

Este documento está disponible también en : http://scitation.aip.org/getpdf/servlet/GetPDFServlet?filetype=pdf&id=JAPIAU000103000009096110000001&idtype=cvips&prog=normal&doi=10.1063/1.2917304

Thin film transistors based on polyarylamine poly(N,N′-diphenyl-N,N′bis(4-hexylphenyl)-[1,1′biphenyl]-4,4′-diamine (pTPD) were fabricated using spin coating in order to measure the mobility of pTPD upon oxidation. Partially oxidized pTPD with a molecular magnetic cluster showed an increase in mobility of over two orders of magnitude. A transition in the mobility of pTPD upon doping could also be observed by the presence of a maximum obtained for a given oxidant ratio and subsequent decrease for a higher ratio. Such result agrees well with a previously reported model based on the combined effect of dipolar broadening of the density of states and transport manifold filling.

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