Electrical conductivity and breakdown properties of some erbium oxide doped phosphovanadate glasses

Ahmed, E. M.; Youssif, M.I.; Elzelaky, A.A.

doi:10.1007/s10854-020-03767-z

Cited by 5 publications

(1 citation statement)

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“…This indicates that a conductive filament is formed in the LRS. It is well known that the switching characteristics and V th value are strongly affected by the ambient temperature [20,21]. In order to investigate the effect of the test temperature, we tested the I-V curves of the Pt/Ag:Ni(OH) 2 /Pt device at various temperatures.…”

Section: Resultsmentioning

confidence: 99%

Bidirectional threshold switching in Pt/Ag:Ni(OH)₂/Pt structure

Shao¹,

Li²,

Wang³

et al. 2021

Semicond. Sci. Technol.

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In this study, an Ag-doped Ni(OH) 2 (Ag:Ni(OH) 2 ) thin film is fabricated by solution process with Ag concentration of 2% at 200 • C and applied to threshold switching selector devices. X-ray photoelectron spectroscopy and high-resolution transmission electron microscopy analysis confirm that the matrix contains 72% Ni(OH) 2 and 28% NiO, while the Ag is doped as ion state. As the processing temperature increases, the Ni(OH) 2 matrix changes to NiO, and the doped Ag tends to metal state. Selector devices with Pt bottom and top electrodes were fabricated and measured. Compared with a Pt/Ag:NiO/Pt device, which shows non-volatile resistive switching characteristics, bi-directional threshold switching behavior is demonstrated in the Pt/Ag:Ni(OH) 2 /Pt device. The selectivity is larger than 10 4 . The high/low resistance state cycles have been measured by half-bias pulse stimulation without obvious deterioration. Since Ag ion in Ni(OH) 2 matrix shows fast diffusion, a thin Ag filament could be formed at low voltage, which then disperses and fractures after the voltage is removed. It corresponds to the main mechanism of bi-directional threshold switching. For the Pt/Ag:NiO/Pt device, the formation of thicker Ag filaments at higher electric fields leads to non-volatile resistive switching.

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Section: Resultsmentioning

confidence: 99%