Light-emitting diodes (LEDs) with monolithically-integrated photodetectors for in situ real-time intensity monitoring

– HW Choi, KH Li, and H Lu

Publication Date: 2019

Patent Office: US

Patent Number: US Patent Application 2019/0157508

A device includes a light-emitting diode (LED) integrated with a photodetector on the same semiconductor platform, such that the photocurrent generated by the photodetector can be used to monitor the optical output of the LED, which is located adjacent to the photodetector. The device provides a compact, robust, reliable and low-cost way of monitoring LED emission.