Enhancement of molecular vibrational spectra from semiconductor/dielectric interfaces in organic electronic devices using surface electromagnetic waves

有机场效应晶体管（OFFET）作为一种新型的电子器件引起了人们的广泛关注。基于载流子注入后有机分子在OFFERS中半导体/电介质界面的结构变化，揭示载流子注入和输运的机理具有重要意义。在这项研究中，从红荧烯单晶器件中的载流子的吸收光谱的方法获得的电荷调制光谱，它选择性地给出了由施加的栅极电压引起的吸收差。所获得的光谱与先前研究中获得的光谱不同。

Organic field effect transistors (OFETs) attract great attention as new-type electronic devices. It is important to reveal the mechanism of carrier injection and transport based on the structural change of the organic molecules at the semiconductor/dielectric interfaces in OFETs upon carrier injection. In this study, absorption spectra from the carriers in rubrene single-crystal devices were obtained by the method of charge modulation spectroscopy, which selectively gives absorbance difference caused by application of the gate voltage. The obtained spectra were different from that obtained in a previous study.