Hydro-thermal synthesis method for copper-zinc-tin-sulfur photoelectric material

The invention discloses a hydro-thermal synthesis method for a copper-zinc-tin-sulfur photoelectric material, belonging to the field of preparation of inorganic nano materials. The method comprises the following steps of: dissolving a zinc salt, a tin salt and a cupric salt into a solvent in the molar ratio (0.5-6):(0.3-1):(0.5-2), adding a sulfur-containing compound of which the mole number is 1-4 times of the total mole number of the metal salts and 0-1 millimole of surfactant and reacting at 150-220 DEG C for 5-48 hours; and centrifuging and drying to obtain copper-zinc-tin-sulfur photoelectric material powder. In the method, tetragonal-phase copper-zinc-tin-sulfur photoelectric material powder and orthogonal-phase copper-zinc-tin-sulfur photoelectric material powder are synthesized respectively with a hydro-thermal method and an ethylene diamine-assisted hydro-thermal method; and the method is easy to operate, has high repeatability and low cost, and is easy for realizing mass production.