Electrostatic Charge Carrier Injection into the Charge-Ordered Organic Material α-(BEDT-TTF)2I3

被引：5
|
作者：
Kimata, Motoi [1 ]
Ishihara, Takuma [1 ]
Tajima, Hiroyuki [1 ]
机构：
[1] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
来源：
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2012年 / 81卷 / 07期
基金：
日本学术振兴会;
关键词：
electrostatic charge carrier injection; charge order; alpha-(BEDT-TTF)(2)I-3; field effect transistor structure; organic conductor; FIELD-EFFECT TRANSISTORS; SINGLE-CRYSTALS; TRANSPORT; METAL;
D O I：
10.1143/JPSJ.81.073704
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We have fabricated a field effect transistor structure using the charge-ordered (CO) organic material alpha-(BEDT-TTF)(2)I-3 to investigate the effects of electrostatic carrier injection. We have observed both n-type and bipolar behaviors in the CO state, whereas, previously, only n-type characteristics were reported. The present results indicate that the transfer characteristics for a negative gate voltage, i.e., hole transport characteristics, are highly dependent on the interface conditions between alpha-(BEDT-TTF)(2)I-3 and the electrodes and/or gate insulator. In addition, the activation energy of the CO state is essentially independent of V-SG. This result suggests the robustness of the CO state to electrostatic charge carrier injection.
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页数：4
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