Open Circuit Voltage Photodetector

Photodetectors are devices that detect light and convert it into an electrical signal. They operate based on the photoelectric effect, in which photons (light particles) strike the semiconductor material, creating electron-hole pairs that lead to the flow of electrical current that can be measured.

The Need

Existing photodetectors are susceptible to various noise sources, such as thermal and electronic. The noise can degrade the signal-to-noise ratio and affect the accuracy of measurements, particularly in low-light conditions.

The Technology

This technology is an open-circuit voltage photodetector (OCVP) that converts incident radiation into a measurable photocurrent using a photodiode coupled to a metal oxide semiconductor transistor. In contrast to existing technologies, this device measures
photovoltage versus photocurrent. Thus far, the inventors have prototyped the device and shown proof of concept in the laboratory.

Commercial Applications

This invention can be used in infrared photodetectors for various applications, including but not limited to photography, telecommunications, remote sensing, and scientific research. Other applications include photovoltaics, environmental monitoring, medical imaging, security systems, communication systems, and quality control in manufacturing.


Compared to existing photodetectors, this technology can reduce noise and lower the cost of infrared photosensors.

Patents Protection

US Patent 11,521,994

Loading icon