Materials, systems and methods for optoelectronic devices
First Claim
1. A photodetector comprising:
- an integrated circuit;
at least two optically sensitive layers, 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;
a plurality of electrodes including at least two electrodes between which the two optically sensitive layers are interposed, the electrodes including a respective first electrode and a respective second electrode; and
circuitry coupled to the integrated circuit, the circuitry comprising compensation circuitry and bandgap reference circuitry, the compensation circuitry to apply black level correction that compensates for a difference between dark currents among the at least two optically sensitive layers by applying a plurality of dark current compensations to the signal, the circuitry outputting signals from the optically sensitive layers, the signals corresponding to light absorbed by the optically sensitive layers.
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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.
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Citations
42 Claims
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1. A photodetector comprising:
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an integrated circuit; at least two optically sensitive layers, 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; a plurality of electrodes including at least two electrodes between which the two optically sensitive layers are interposed, the electrodes including a respective first electrode and a respective second electrode; and circuitry coupled to the integrated circuit, the circuitry comprising compensation circuitry and bandgap reference circuitry, the compensation circuitry to apply black level correction that compensates for a difference between dark currents among the at least two optically sensitive layers by applying a plurality of dark current compensations to the signal, the circuitry outputting signals from the optically sensitive layers, the signals corresponding to light absorbed by the optically sensitive layers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. A photodetector comprising:
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an integrated circuit; at least two optically sensitive layers, 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, responsivities of each of the optically sensitive layers being approximately equal when a thickness of the second optically sensitive layer is less than a thickness of the first optically sensitive layer; a plurality of electrodes including at least two electrodes between which the two optically sensitive layers are interposed, the electrodes including a respective first electrode and a respective second electrode; and circuitry coupled to the integrated circuit, the circuitry comprising compensation circuitry, the compensation circuitry to apply black level correction that compensates for a difference between dark currents among the at least two optically sensitive layers by applying a plurality of dark current compensations to the signal, the circuitry outputting signals from the optically sensitive layers, the signals corresponding to light absorbed by the optically sensitive layers.
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39. A photodetector comprising:
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an integrated circuit; at least two optically sensitive layers, 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; a plurality of electrodes including at least two electrodes between which the two optically sensitive layers are interposed, the electrodes including a respective first electrode and a respective second electrode; at least one black pixel, the black pixel being configured to generate a dark current; and circuitry coupled to the integrated circuit, the circuitry comprising compensation circuitry, the compensation circuitry to apply black level correction that compensates for a difference between dark currents among the at least two optically sensitive layers by applying a plurality of dark current compensations to the signal, the dark current compensations to include subtracting the dark current from the signals of the optically sensitive layers in different proportions, the circuitry outputting signals from the optically sensitive layers, the signals corresponding to light absorbed by the optically sensitive layers. - View Dependent Claims (40, 41)
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42. A photodetector comprising:
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an integrated circuit; at least two optically sensitive layers, 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; a plurality of electrodes including at least two electrodes between which the two optically sensitive layers are interposed, the electrodes including a respective first electrode and a respective second electrode; at least one black pixel, the at least one black pixel comprises at least two optically sensitive opaque layers, a first optically sensitive opaque layer and a second optically sensitive opaque layer, the first optically sensitive opaque layer and the second optically sensitive opaque layer each comprising an optically sensitive layer covered with an opaque material, the first optically sensitive opaque layer over at least a portion of a black pixel integrated circuit and the second optically sensitive opaque layer over the first optically sensitive opaque layer, each optically sensitive opaque layer being interposed between a respective first electrode of the black pixel and a respective second electrode of the black pixel, the integrated circuit selectively to apply a bias to the respective first and second electrodes of the black pixel and read a dark current signal from the optically sensitive opaque layers, the dark current signal being related to the number of photons received by the respective optically sensitive opaque layer; and circuitry coupled to the integrated circuit, the circuitry comprising compensation circuitry, the compensation circuitry to apply black level correction that compensates for a difference between dark currents among the at least two optically sensitive layers by applying a plurality of dark current compensations to the signal, the circuitry outputting signals from the optically sensitive layers, the signals corresponding to light absorbed by the optically sensitive layers.
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Specification