Fabrication and investigation of an upconversion quantum-well infrared photodetector integrated with a light-emitting diode

摘要

We report the fabrication of an upconversion infrared detector, i.e. a quantum well infrared photodetector integrated with a light-emitting diode (named as QWIP-LED). The infrared photo-response spectrum in the upconversion process is in good agreement with the normal photocurrent spectrum of the QWIP, which demonstrates that the long wavelength infrared band at 8 mu m has been transferred to the near infrared band at 0.8 mu m by the upconversion process.