Photovoltaic effects in CdV2S4 single crystals and structures based on them

Single crystals of the CdV2S4 ternary compound are grown, and their crystal structure, electrical properties, and optical absorption are studied. The substitution of vanadium for Group III element in AIIB 2 III C 4 VI compounds results in the formation of crystals of n-type conduction with an electron density of ∼1018 cm−3 and a Hall mobility Un≈150 cm2/(V s) at T=300 K, which is limited by scattering on lattice vibrations. Rectifying photosensitive structures based on CdV2S4 single crystals are fabricated for the first time, their photoelectric properties are studied, and a conclusion is made on their applicability in the design of wide-spectral-range photodetectors of unpolarized light.