Article ID Journal Published Year Pages File Type
5368224 Applied Surface Science 2010 4 Pages PDF
Abstract

We report on the fabrication and characterization of MgZnO/SiO2/n-Si structured photodetectors, for the visible-blind monitoring. The current-voltage curve of the heterojunction shows obvious rectifying behaviors. In the visible range, the photocurrent decreased rapidly. In additionally, the ultraviolet/visible rejection ratio (R340 nm/R500 nm) was about four orders of magnitude at reverse bias, indicating a high degree of visible blindness. The key role of the insulating SiO2 layer will be discussed in terms of the band diagrams of the heterojunctions.

Related Topics
Physical Sciences and Engineering Chemistry Physical and Theoretical Chemistry
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