Enhanced resistance switching stability of transparent ITO/TiO2/ITO sandwiches

We report that fully transparent resistive random access memory (TRRAM) devices based on ITO/TiO2/ITO sandwich structure, which are prepared by the method of RF magnetron sputtering, exhibit excellent switching stability. In the visible region (400 800 nm in wavelength) the TRRAM device has a transm...

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Veröffentlicht in:Chinese physics B 2010-03, Vol.19 (3), p.503-507
1. Verfasser: 孟洋 张培健 刘紫玉 廖昭亮 潘新宇 梁学锦 赵宏武 陈东敏
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Sprache:eng
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Zusammenfassung:We report that fully transparent resistive random access memory (TRRAM) devices based on ITO/TiO2/ITO sandwich structure, which are prepared by the method of RF magnetron sputtering, exhibit excellent switching stability. In the visible region (400 800 nm in wavelength) the TRRAM device has a transmittance of more than 80%. The fabricated TRRAM device shows a bipolar resistance switching behaviour at low voltage, while the retention test and rewrite cycles of more than 300,000 indicate the enhancement of switching capability. The mechanism of resistance switching is further explained by the forming and rupture processes of the filament in the TiO2 layer with the help of more oxygen vacancies which are provided by the transparent ITO electrodes.
ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/19/3/037304