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Environmental UV-A Level Monitoring Using an Ag-TiO2 Schottky Diode

Here, we demonstrate the field applicability of the Ag-TiO2 Schottky diodes for environmental UV level measurements. The device is visible-blind and it is shown that its maximum sensitivity coincides the environmental UV spectrum (UV-A). These features, along with its low voltage and biasing insensitivity of its operation, simplify the electronic circuit required for the fabrication of a hand-held UV monitoring system.