期刊
APPLIED PHYSICS LETTERS
卷 94, 期 6, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3079401
关键词
carrier mobility; electrolytes; insulated gate field effect transistors; organic field effect transistors; organic semiconductors; switching
资金
- Ministry of Education, Culture, Sports, Science, and Technology, Japan [17069003, 18028029, 19360009, 20740213]
- Grants-in-Aid for Scientific Research [20740213, 18028029] Funding Source: KAKEN
We report on a comparative study of rubrene single-crystal field-effect transistors with various ionic-liquid electrolytes used for gate insulators. A systematic correlation is found that mobility of the field-effect transistors increases with decreasing electrostatic capacitance of the electric double layers, as the result of highly reproducible comparisons among tens of samples with the variation of anions in the purified ionic liquids. By optimizing the gating ionic liquid, the highest mobility of the electrolyte-gated organic transistors elevated up to 9.5 cm(2)/V s, which is only a fraction of the value of intrinsic material property, demonstrating an excellent field-effect switching operation.
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