ABSTRACT
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 through up-conversion process is compared with the normal photocurrent spectrum of QWIP. A good agreement between these two spectra is observed, which demonstrate that the long wavelength infrared band at 8μm has been transferred to the near infrared band at 0.8μm by up-conversion process.
