Materials, systems and methods for optoelectronic devices
AssigneeInVisage Technologies, Inc.
InventorsHui Tian, Edward Sargent
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Abstract
A photodetector is described along with corresponding materials, systems, and methods. The photodetector comprises an integrated circuit and at least two optically sensitive layers. A first optically sensitive layer is over at least a portion of the integrated circuit, and a second optically sensitive layer is over the first optically sensitive layer. Each optically sensitive layer is interposed between two electrodes. The two electrodes include a respective first electrode and a respective second electrode. The integrated circuit selectively applies a bias to the electrodes and reads signals from the optically sensitive layers. The signal is related to the number of photons received by the respective optically sensitive layer.
Claims1
A photodetector comprising:
- an integrated circuit;
- and
- at least two optically sensitive layers interposed between two electrodes, a first optically sensitive layer and a second optically sensitive layer, the first optically sensitive layer over at least a portion of the integrated circuit and the second optically sensitive layer over the first optically sensitive layer;
- wherein each optically sensitive layer comprises nanocrystals including closely-packed nanoparticle cores, wherein each core is partially covered with a shell, where the shell produces trap states having substantially a single time constant.
Dependencies are inferred from the claim text.