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Electrode dependence of resistive switching in Au/Ni-Au nanoparticle devices

机译:Au / Ni-Au纳米粒子器件中电阻转换的电极依赖性

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We synthesized Ni-Au nanoparticles (NPs) by a wet chemical method and fabricated sandwich structures of Au/Ni-Au NPs/Nb-doped SrTiO3 and Au/Ni-Au NPs/ITO (Indium Tin Oxide) glass. The Ni-Au NPs were identified as having a spindle-like nanostructure. Different bipolar resistive switching appeared. Linear fitting of I-V curves reveals that resistive switching follows the SCLC (Space Charge Limited Current) conduction mechanism. The switching behavior of Au/Ni-Au NPs/Nb-doped SrTiO3 is attributed to the electron trapping/detrapping of oxygen vacancies at the interface between NPs and Nb-doped SrTiO3, and that of Au/Ni-Au NPs/ITO glass which shows good switch characteristics such as high ON/OFF ratio, low SET voltage, can be ascribed to formation of a filament.
机译:我们通过湿化学方法合成了Ni-Au纳米颗粒(NPs),并制备了Au / Ni-Au NPs / Nb掺杂SrTiO3和Au / Ni-Au NPs / ITO(氧化铟锡)玻璃的三明治结构。 Ni-Au NP被鉴定为具有纺锤状纳米结构。出现了不同的双极电阻切换。 I-V曲线的线性拟合表明,电阻切换遵循SCLC(空间电荷限制电流)传导机制。 Au / Ni-Au NPs / Nb掺杂SrTiO3的开关行为归因于NPs和Nb掺杂SrTiO3之间的界面处的氧空位的电子俘获/去俘获以及Au / Ni-Au NPs / ITO玻璃的电子俘获/去俘获显示出良好的开关特性,例如高开/关比,低SET电压,可归因于灯丝的形成。

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