Some recent results of spectral characteristic study of integrated HgCdTe(mercury cadmium telluride) infrared two-color detector arrays were presented firstly.Many further investigations of spectral and structural characteristics were focused on SW(short wavelength) response of the preliminary two-color detection arrays which exhibited a narrow spectrum.The reason and solution of SW spectrum with small FWHM(full width of half maximum) were then found,and the proper spectrum of two-color detector with an imp...