A photovoltaic InAsGaSb superlattice photodetector based on electron transfer using quantum energy levels and interband tunneling is presented: an interband tunneling detector. The quantum efficiency is about 7%, which is improved by ten times compared to the previous published interband cascade detectors. The R0 A product is 0.03 cm2 at 200 K and is comparable to that of state-of-the-art InAsGaSb superlattice photodiodes. Since the interband tunneling detector works without an applied bias, it is promising for small-pixel focal plane array applications.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)