Very long wavelength infrared focal plane arrays with 50% cutoff wavelength based on type-II InAs/GaSb superlattice

Han Xi^{1, 2}, Xiang Wei^{1, 2}, Hao Hong-Yue^{1, 2}, Jiang Dong-Wei^{1, 2}, Sun Yao-Yao^{1, 2}, Wang Guo-Wei^{1, 2}, Xu Ying-Qiang^{1, 2}, Niu Zhi-Chuan^{1, 2, †}

(color online) Spectral elemental responses, measured at 77 K. (a) Quantum efficiency. (b) Specific detectivity.