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arXiv 0909.2240cond-mat.mtrl-scicond-mat.soft
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噻吩类化合物在可开关畴上的电子输运性质

Electronic transport properties through thiophenes on switchable domains

T. Kunze, S. Gemming, V. Pankoke, K. Morawetz, R. Luschtinetz, G. Seifert

摘要:

研究了新型有机铁电场效应晶体管(OFFET)中$α$、$\ome ga$ -二氰基- $β$、$β$ '-邻-四噻吩(DCNDBQT)叠层中电子和空穴的输运.用铁电体代替电介质衬底的新应用提供了在有机半导体中逐位切换铁电畴和利用这些畴的极化作为门场的可能性。含有约20 nm厚度的非常薄的DCNDBQT膜的器件旨在适用于逻辑以及光学应用。我们研究了器件的性质与一个称为多层有机发光二极管(MOLED),这是扩展到横向领域的唯象模型的帮助。结果表明,空间电荷效应和像电荷效应在这些有机器件中起着决定性的作用。

英文摘要:

The electronic transport of electrons and holes through stacks of $α$,$\ome ga$-dicyano-$β$,$β$'-dibutyl- quaterthiophene (DCNDBQT) as part of a nov el organic ferroic field-effect transistor (OFFET) is investigated. The novel ap plication of a ferroelectric instead of a dielectric substrate provides the poss ibility to switch bit-wise the ferroelectric domains and to employ the polarizat ion of these domains as a gate field in an organic semiconductor. A device conta ining very thin DCNDBQT films of around 20 nm thickness is intended to be suitab le for logical as well as optical applications. We investigate the device proper ties with the help of a phenomenological model called multilayer organic light-e mitting diodes (MOLED), which was extended to transverse fields. The results sho wed, that space charge and image charge effects play a crucial role in these org anic devices.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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