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arXiv 0905.1067cond-mat.mtrl-scicond-mat.other
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有机晶体管的阈值电压和空间电荷

Threshold voltage and space charge in organic transistors

I. Gutiérrez Lezama, A. F. Morpurgo

摘要:

我们调查红荧烯单晶场效应晶体管,其稳定性和再现性是足够的系统地测量作为沟道长度和源漏电压的函数的阈值电压的偏移。这种位移是由于空间电荷从接触转移,并可以定量建模,而无需自由拟合参数,使用泊松方程,并通过假设红荧烯的状态密度是一个传统的无机半导体。我们的结果证明了最近对红荧烯晶体的各种实验在定量水平上的一致性,并显示了如何使用FET测量来确定微观参数(例如,载流子的有效质量)。

英文摘要:

We investigate rubrene single-crystal field-effect transistors, whose stability and reproducibility are sufficient to measure systematically the shift in threshold voltage as a function of channel length and source-drain voltage. The shift is due to space-charge transferred from the contacts, and can be modeled quantitatively without free fitting parameters, using Poisson's equation, and by assuming that the density of states in rubrene is that of a conventional inorganic semiconductor. Our results demonstrate the consistency, at the quantitative level, of a variety of recent experiments on rubrene crystals, and show how the use of FET measurements can enable the determination of microscopic parameters (e.g., the effective mass of charge carriers).

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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