The HgCdTe photodiodes,quantum well infrared photodiodes(QWIP)and typeⅡ InAs/GaSb superlattice photodiodes have emerged as the first candidate for third generation infrared detectors.There are many advantages of typeⅡ InAs/GaSb superlattice photodiodes over the HgCdTe photodiodes,for example,a highly adjustable broad spectral response range,higher operating temperature,longer carrier lifetime,lower leakage current and greater uniformity.There will be potential applications in the future for typeⅡ InAs/GaSb ...