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arXiv · 1705.00130

Infrared-transmittance tunable metal-insulator conversion device with thin-film-transistor-type structure on a glass substrate

Takayoshi Katase·Kenji Endo·Hiromichi Ohta
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Abstract

Infrared (IR) transmittance tunable metal-insulator conversion was demonstrated on glass substrate by using thermochromic vanadium dioxide (VO2) as the active layer in three-terminal thin-film-transistor-type device with water-infiltrated glass as the gate insulator. Alternative positive/negative gate-voltage applications induce the reversible protonation/deprotonation of VO2 channel, and two-orders of magnitude modulation of sheet-resistance and 49% modulation of IR-transmittance were simultaneously demonstrated at room temperature by the metal-insulator phase conversion of VO2 in a non-volatile manner. The present device is operable by the room-temperature protonation in all-solid-state structure, and thus it will provide a new gateway to future energy-saving technology as advanced smart window.

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Takayoshi Katase, Kenji Endo, Hiromichi Ohta. 2017-04-29. Infrared-transmittance tunable metal-insulator conversion device with thin-film-transistor-type structure on a glass substrate. https://doi.org/10.1063/1.4983276

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