Probing of Channel Formation in Organic Field-Effect Transistors by Optical Second Harmonic Generation Measurement
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概要
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Optical second harmonic generation (SHG) measurement was employed to compare the difference in carrier behavior between pentacene and copper(II)–phthalocyanine (CuPc) field-effect transistors (FETs). For pentacene FETs, SHG was enhanced in the off-state owing to Laplace electric field formation and it was diminished by carrier injection from the Au electrode. On the other hand, for CuPc, SHG was not enhanced in the off- and on-states. It was suggested that additional excess injected carriers exist even in the off-state for CuPc. A possible mechanism underlying the extinction of SHG in the off-state for CuPc was proposed.
- 2008-04-25
著者
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Lim Eunju
Department Of Physical Electronics Tokyo Institute Of Technology
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Manaka Takaaki
Department Of Physical Electronics Graduate School Of Science And Engineering Tokyo Institute Of Tec
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Iwamoto Mitsumasa
Department Of Electrical And Electronic Engineering
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Lee Hosik
Department of Hospital Biomedical Engineering, Dongshin University, Daeho-Dong, Naju, Jeonnam 520-714, Korea
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