Understanding of multi-level resistive switching mechanism in GeO_x through redox reaction in H₂O₂/sarcosine prostate cancer biomarker detection.

ABSTRACT: Formation-free multi-level resistive switching characteristics by using 10 nm-thick polycrystalline GeO_x film in a simple W/GeO_x/W structure and understanding of switching mechanism through redox reaction in H₂O₂/sarcosine sensing (or changing Ge°/Ge⁴⁺ oxidation states under external bias) have been reported for the first time. Oxidation states of Ge⁰/Ge⁴⁺ are confirmed by both XPS and H₂O₂ sensing of GeO_x membrane in electrolyte-insulator-semiconductor structure. Highly repeatable 1000 dc cycles and stable program/erase (P/E) endurance of >10⁶ cycles at a small pulse width of 100 ns are achieved at a low operation current of 0.1 µA. The thickness of GeO_x laye

SUBMITTER: Samanta S 

PROVIDER: S-EPMC5593955 | biostudies-literature | 2017 Sep

REPOSITORIES: biostudies-literature