Method and apparatus for providing a charge blocking layer on an infrared up-conversion device
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United States of America Patent
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May 6, 2014
Grant Date -
Jul 26, 2012
app pub date -
May 24, 2011
filing date -
May 24, 2010
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Abstract
Embodiments of the invention are directed to an improved device for sensing infrared (IR) radiation with upconversion to provide an output of electromagnetic radiation having a shorter wavelength than the incident IR radiation, such as visible light. The device comprises an anode, a hole blocking layer to separate an IR sensing layer from the anode, an organic light emitting layer that is separated from the anode by the IR sensing layer, and a cathode. The hole blocking layer assures that when a potential is applied between the anode and the cathode the organic light emitting layer generates electromagnetic radiation only when the IR sensing layer is irradiated with IR radiation.
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