Journal ArticleDOI
Stacked pentacene layer organic thin-film transistors with improved characteristics
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TLDR
In this article, photolithographically defined organic thin-film transistors (OTFTs) with improved field-effect mobility and sub-threshold slope were fabricated using two layers of pentacene deposited at different substrate temperatures.Abstract:
Using two layers of pentacene deposited at different substrate temperatures as the active material, we have fabricated photolithographically defined organic thin-film transistors (OTFTs) with improved field-effect mobility and subthreshold slope. These devices use photolithographically defined gold source and drain electrodes and octadecyltrichlorosilane-treated silicon dioxide gate dielectric. The devices have field-effect mobility as large as 1.5 cm/sup 2//V-s, on/off current ratio larger than 10/sup 8/, near zero threshold voltage, and subthreshold slope less than 1.6 V per decade. To our knowledge, this is the largest field-effect mobility and smallest subthreshold slope yet reported for any organic transistor, and the first time both of these important characteristics have been obtained for a single device.read more
Citations
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Effect of Self-Assembled Monolayer Modification on Indium–Tin Oxide Surface for Surface-Initiated Vapor Deposition Polymerization of Carbazole Thin Films
TL;DR: In this paper, a self-assembled monolayer (SAM) that has an azo initiator as a terminal group was prepared on an ITO surface, on which carbazole acrylate monomers were evaporated under ultraviolet (UV) irradiation.
Journal ArticleDOI
Variation of output properties of perylene field-effect transistors by work function of source/drain electrodes
TL;DR: The p-channel field effect mobility and on-off ratio in perylene FETs increase with an increase in ϕ of the metal electrodes, which can be reasonably explained on the basis of energy barrier for hole or electron as mentioned in this paper.
Journal ArticleDOI
Controlling of photoresponse properties of pentacene thin film phototransistors by dielectric layer thickness and channel widths
Bayram Gündüz,Omar A. Al-Hartomy,Omar A. Al-Hartomy,Said A. Farha Al Said,Said A. Farha Al Said,Ahmed A. Al-Ghamdi,Fahrettin Yakuphanoglu,Fahrettin Yakuphanoglu +7 more
TL;DR: In this paper, the photoresponse performance of the pentacene thin film transistors including electrodes and dielectric layer thickness was investigated under dark and white light illuminations.
Journal ArticleDOI
High-Performance Low Voltage Organic Thin-Film Transistors
TL;DR: In this paper, high performance low voltage pentacene organic thin-film transistors (OTFT's) and circuits have been designed and fabricated and observed invertors showing a voltage gain of 9 and an output swing of more than 13 V.
Journal ArticleDOI
Adiabatic electron affinity of pentacene and perfluoropentacene molecules studied by anion photoelectron spectroscopy: Molecular insights into electronic properties
TL;DR: Using gas phase anion photoelectron spectroscopy, the adiabatic electron affinity of Pentacene and perfluoropentacene (C22H14, PEN) molecules was determined in this paper.
References
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Journal ArticleDOI
Organic transistors: two-dimensional transport and improved electrical characteristics.
TL;DR: The thiophene oligomer α-hexathienylene (α-6T) has been successfully used as the active semiconducting material in thin-film transistors and optimized methods of device fabrication have resulted in high field-effect mobilities and on/off current ratios of > 106.
Journal ArticleDOI
Pentacene organic thin-film transistors-molecular ordering and mobility
TL;DR: Pentacene-based organic thin-film transistors (TFT's) with field effect mobility as large as 0.7 cm/sup 2/V/spl middot/s and on/off current ratio larger than 10/sup 8/ have been fabricated as mentioned in this paper.
Journal ArticleDOI
Molecular beam deposited thin films of pentacene for organic field effect transistor applications
TL;DR: In this article, a maximum field effect mobility of 0.038 cm−2'V−1'1's−1 is reported for devices incorporating pentacene films deposited at room temperature.
Journal ArticleDOI
Pentacene-based organic thin-film transistors
TL;DR: In this paper, the authors show that the large sub-threshold slope typically observed is not an intrinsic property of the organic semiconducting material and that devices with sub-reshold slope similar to amorphous silicon devices are possible.