Cadmium-rich CdxHg(1-x)Te (CMT) thin films were grown by cathodic electrodeposition. Two main fabrication parameters were taken into account : deposition potential and mercury content in solution. Different layers of CMT deposited by varying these two parameters were studied by X-ray diffraction, energy dispersive X-ray spectrometry and photoelectrochemical measurements. It was shown that surface structure, composition and quantum efficiency of CMT can be controlled with these two variables. Multigap structures were also been considered.