Ambipolar pentacene field-effect transistor with double-layer organic insulator
In: Organic field-effect transistors V (13-15 August, 2006, San Diego, California, USA)0Organic field-effect transistors five :63361C.1-63361C.8
Konferenz
- print, 17 ref 1
Zugriff:
Ambipolar conduction in organic field-effect transistor is very important feature to achieve organic CMOS circuitry. We fabricated an ambipolar pentacene field-effect transistors consisted of gold source-drain electrodes and double-layered PMMA (Polymethylmethacrylate) / PVA (Polyvinyl Alcohol) organic insulator on the ITO(Indium-tin-oxide)-pattemed glass substrate. These top-contact geometry field-effect transistors were fabricated in the vacuum of 10-6 Torr and minimally exposed to atmosphere before its measurement and characterized in the vacuum condition. Our device showed reasonable p-type characteristics of field-effect hole mobility of 0.2-0.9 cm2/Vs and the current ON/OFF ratio of about 106 compared to prior reports with similar configurations. For the n-type characteristics, field-effect electron mobility of 0.004-0.008 cm2/Vs and the current ON/OFF ratio of about 103 were measured, which is relatively high performance for the n-type conduction of pentacene field-effect transistors. We attributed these ambipolar properties mainly to the hydroxyl-free PMMA insulator interface with the pentacene active layer. In addition, an increased insulator capacitance due to double-layer insulator structure with high-k PVA layer also helped us to observe relatively good n-type characteristics.
Titel: |
Ambipolar pentacene field-effect transistor with double-layer organic insulator
|
---|---|
Autor/in / Beteiligte Person: | KWAK, Jeong-Hun ; BAEK, Heume-Il ; LEE, Changhee |
Link: | |
Quelle: | Organic field-effect transistors V (13-15 August, 2006, San Diego, California, USA)0Organic field-effect transistors five :63361C.1-63361C.8 |
Veröffentlichung: | Bellingham, Wash: SPIE, 2006 |
Medientyp: | Konferenz |
Umfang: | print, 17 ref 1 |
ISSN: | 0277-786X (print) |
Schlagwort: |
|
Sonstiges: |
|