A method of obtaining high quantum efficiency in uncooled LWIR HgCdTe photodetectors

We have proposed the method to obtain high effective quantum efficiency in uncooled LWIR HgCdTe photodiodes. We have designed the stacked multi junction photodiodes working in non-equilibrium conditions. The effective quantum efficiency being the product of quantum efficiency and photoelectrical gain can achieve significant values, much greater than 100%, when the structure is reverse biased.