Conductivity Modulation by CaVO<sub>3</sub>-based All-solid-state Redox Transistor with Ion Transport of Li<sup>+</sup> or H<sup>+</sup>
Transactions-Materials Research Society of Japan(2019)
Abstract
CaVO3 (CVO)-based all-solid-state redox transistor with a Yttria-stabilized-ZrO2 (YSZ) H+ ion conductor was fabricated. The electronic conductivity of the CVO was modulated by controlling oxygen nonstoichiometry due to H+ insertion and desertion (redox reaction). The variation in drain current was larger than that of SrVO3 (SVO)-based all-solid-state redox transistor. For comparison, the CVO-based device with a Li2O-ZrO2-SiO2 (LZSO) Li+ conductor was also investigated. The LZSO device also showed larger drain current enhancement than the SVO device. Controlling oxygen nonstoichiometry due to the redox reaction (H+ or Li+ insertion and desertion) is found to be effective for modulating electronic conductivity of CVO.
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Key words
conductivity modulation,modulation transport,all-solid-state
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