有机单晶晶体管中的电流饱和和库仑相互作用
Current saturation and Coulomb interactions in organic single-crystal transistors
摘要：
实验研究了红荧烯单晶场效应晶体管（FET）在高载流子密度区（n ~ 0.1载流子/分子）的电子输运。在这种情况下，我们发现电流并不随载流子密度线性增加，而是趋于饱和。同时，输运活化能随着n的增加而意外地增加。我们进行了理论分析方面的相互作用Frohlich极化子，定量占我们的实验观察的一个定义良好的微观模型。这项工作对于我们理解有机场效应晶体管的电子输运具有特别重要的意义。
英文摘要：
Electronic transport through rubrene single-crystal field effect transistors (FETs) is investigated experimentally in the high carrier density regime (n ~ 0.1 carrier/molecule). In this regime, we find that the current does not increase linearly with the density of charge carriers, and tends to saturate. At the same time, the activation energy for transport unexpectedly increases with increasing n. We perform a theoretical analysis in terms of a well-defined microscopic model for interacting Frohlich polarons, that quantitatively accounts for our experimental observations. This work is particularly significant for our understanding of electronic transport through organic FETs.
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