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Radio-Frequency Operation of Transparent Nanowire Thin-Film Transistors

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5 Author(s)
Dattoli, Eric N. ; Dept. of Electr. Eng. & Comput. Sci., Univ. of Michigan, Ann Arbor, MI ; Kuk-Hwan Kim ; Fung, Wayne Y. ; Choi, Seok-Youl
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In this letter, radio-frequency characterization of fully transparent thin-film transistors (TFTs) based on chemically synthesized nanowires (NWs) has been carried out. The NW TFTs show current-gain cutoff frequency f T of 109 MHz and power-gain cutoff frequency f max of 286 MHz. The TFTs were fabricated on glass substrates using aligned SnO2 NWs as the transistor channel and sputtered indium-tin-oxide films as the source-drain and gate electrodes. Besides exhibiting > 100-MHz operation frequencies, the transparent NW TFTs show a narrow distribution of performance metrics among different devices. These results suggest the NW-TFT approach may be promising for high-speed transparent and flexible integrated circuits fabricated on diverse substrates.

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Electron Device Letters, IEEE  (Volume:30 ,  Issue: 7 )