Method for manufacturing a single crystal by solution growth enabling trapping of parasitic crystals

A process for manufacturing a single crystal by solution growth from a seed crystal, the process comprising, in an apparatus comprising a vessel configured to contain a crystal growth solution;

• a growth platform capable of being rotated in the vessel, and comprising a lower tray, on which the single crystal is intended to grow:
• bonding the seed crystal to the lower tray of the growth platform;
• introducing the crystal growth solution into the vessel;
• treating the crystal growth solution to make it supersaturated, to obtain a supersaturated solution,
• prior to bringing the seed crystal into contact with the supersaturated solution, forming, in the vessel, a trapping zone for parasitic crystals likely to grow in the crystal growth solution, by introducing into the vessel, an immiscible liquid, which is immiscible with the crystal growth solution, the immiscible liquid having a density greater than a density of the crystal growth solution and lower than a density of the parasitic crystals, and the immiscible liquid forming with the crystal growth solution an interface located below the lower tray of the growth platform;
• bringing the seed crystal into contact with the supersaturated solution;
• and
• rotating the growth platform until the single crystal is obtained.