A method to extend wavelength into middle-wavelength infrared based on InAsSb/(Al)GaSb interband transition quantum well infrared photodetector

Li Xuan-Zhang^{1, 2}, Sun Ling^{1, 2}, Lu Jin-Lei^{1, 2}, Liu Jie^{1, 2}, Yue Chen^{1, 2}, Xie Li-Li³, Wang Wen-Xin¹, Chen Hong^{1, 4}, Jia Hai-Qiang^{1, 4}, Wang Lu^{1, †}

Typical normalized relative photocurrent spectral response curves of (a) InAs_0.91Sb_0.09/GaSb QWs with different quantum wells: 5 nm, 10 nm (IQWP-A) and 15 nm (IQWP-B) under zero bias at room temperature; (b) IQWIP-C InAs_0.7Sb_0.3/AlSb/Al_0.3Ga_0.7Sb QWs under zero bias at 78 K.