An optical sensor includes a plurality of lower electrodes adjacent to one another, an organic material layer that includes a lower carrier transport layer including a plurality of first electrode covering parts each covering at least an upper surface of corresponding one of the plurality of lower electrodes, and a carrier mobility reducing part that is provided in at least a part of an area between the adjacent first electrode covering parts so as to reduce carrier mobility of the adjacent first electrode covering parts.

A display apparatus includes: a first unit pixel including a plurality of light-emitting diodes, and a second unit pixel including a plurality of light-emitting diodes and a photodetector diode. Each of the plurality of light-emitting diodes includes a first electrode, a second electrode facing the first electrode, and an emission layer disposed between the first electrode and the second electrode, and the photodetector diode includes a third electrode, a fourth electrode facing the third electrode, an active layer disposed between the third electrode and the fourth electrode, and a color filter layer disposed between the fourth electrode and the active layer.

A light emitting device, a fabricating method thereof, and a display device are disclosed. In the light emitting device, a light emitting functional layer includes at least two QD light emitting layers which emit light of different colors, and a transparent insulating layer which is arranged between any two neighboring QD light emitting layers. The light emitting device has a reduced power consumption, and the problem of shift in color of the emitted light due to high-energy excitons transfer is overcome.

Various embodiment include optical and optoelectronic devices and methods of making same. Under one aspect, an optical device includes an integrated circuit having an array of conductive regions, and an optically sensitive material over at least a portion of the integrated circuit and in electrical communication with at least one conductive region of the array of conductive regions. Under another aspect, a film includes a network of fused nanocrystals, the nanocrystals having a core and an outer surface, wherein the core of at least a portion of the fused nanocrystals is in direct physical contact and electrical communication with the core of at least one adjacent fused nanocrystal, and wherein the film has substantially no defect states in the regions where the cores of the nanocrystals are fused. Additional devices and methods are described.

A capacitive photoresistor array having frequency-independent capacitance includes first and second electrodes and a composite material including a perovskite and a terpolymer. The composite material is sandwiched between the first electrode and the second electrode, and a capacitance of the array changes proportionally with a light intensity for visible light and is independent of light frequency due to a combination of the perovskite and the terpolymer.

A capacitive photoresistor array having frequency-independent capacitance includes first and second electrodes and a composite material including a perovskite and a terpolymer. The composite material is sandwiched between the first electrode and the second electrode, and a capacitance of the array changes proportionally with a light intensity for visible light and is independent of light frequency due to a combination of the perovskite and the terpolymer.

According to an aspect, a detection device includes: a sensor including a first photodiode and a second photodiode; and a detection circuit configured to alternately detect an output of the first photodiode and an output of the second photodiode. Anodes of the first photodiode and the second photodiode are configured to be supplied with a first potential. A cathode of the second photodiode is configured to be supplied with a second potential lower than the first potential in a first period in which the output of the first photodiode is detected. A cathode of the first photodiode is configured to be supplied with the second potential in a second period in which the output of the second photodiode is detected.

According to an aspect, a detection device includes: a sensor including a first photodiode and a second photodiode; and a detection circuit configured to alternately detect an output of the first photodiode and an output of the second photodiode. Anodes of the first photodiode and the second photodiode are configured to be supplied with a first potential. A cathode of the second photodiode is configured to be supplied with a second potential lower than the first potential in a first period in which the output of the first photodiode is detected. A cathode of the first photodiode is configured to be supplied with the second potential in a second period in which the output of the second photodiode is detected.

A micro-light-emitting diode (LED) display includes a number of micro-LED pixel elements and multiple optical sensors integrated with the micro-LED pixel elements. A transparent conductor layer is disposed over the micro-LED pixel elements and optical sensors.

An organic/inorganic composite structure includes a silicon substrate and a conductive polymer layer. The silicon substrate includes a plurality of microstructures disposed on a surface of the silicon substrate. The conductive polymer layer is disposed on the plurality of microstructures. A spaced distance is between the conductive polymer layer and the surface of the silicon substrate.