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Photogeneration and transport in thin films of p- and n-type discotic liquid crystals

par Miskiewicz, P.;Rybak, Andrzej;Jung, Jarosław;Glowacki, Ireneusz;Ulanski, J.;Geerts, Yves ;Watson, Maria;Mullen, K.
Référence Synthetic metals, 137, page (905-906)
Publication Publié, 2003

Article révisé par les pairs

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Résumé :

Thin layers of discotic liquid crystals, p-type: HBC-C8,2, HBC-C12 and n-type: HATNA 4D, RDlSCl and perylene derivative were prepared by drop- and zone-casting. It is shown, that zone-casting yields aligned, anisotropic films with "edge-on" orientation suitable for FET construction. In the isotropic, obtained by drop-casting films the charge-carrier photogeneration, recombination and transport were investigated by means of xerographic discharge. For the first time it is demonstrated experimentally that in the nominally n-type discotics the majority charge carriers are electrons.