An ultraviolet light sensor includes an elongated metal oxide nanostructure, a layer of an ultraviolet light-absorbing polymer, a current source and a current detector. The elongated metal oxide nanostructure has a first end and an opposite second end. The layer of an ultraviolet light-absorbing polymer is disposed about at least a portion of the metal oxide nanostructure. The current source is configured to provide electrons to the first end of the metal oxide nanostructure. The current detector is configured to detect an amount of current flowing through the metal oxide nanostructure. The amount of current flowing through the metal oxide nanostructure corresponds to an amount of ultraviolet light impinging on the metal oxide nanostructure.
STATEMENT OF GOVERNMENT INTEREST
This invention was made with support from the U.S. government under grant number DE-FG02-07ER46394, awarded by the Department of Energy and grant number W31P4Q06C0262, awarded by the U.S. Army. The Government has certain rights in the invention.