METHOD OF GROWING GERMANIUM MONOCRYSTALS Russian patent published in 2007 - IPC C30B15/34 C30B29/08 

FIELD: growing germanium monocrystals.

SUBSTANCE: germanium monocrystals are grown from melt on seed crystal with the use of molder filled with melt; molder has holes for removal of excessive melt formed during crystallization. First, crystal is enlarged on rotating seed crystal in radial direction till it gets in contact with molder placed in crucible without melt; then, rotation of crystal is discontinued and crystallization is carried out in axial direction by lowering the temperature till complete hardening of melt; molder is provided with holes in its lower part located at equal distance from one another at radius r satisfying the condition r<K/h, where K= 0.2 cm²; h is height of melt, cm; number of holes, 12-18. Molder may be made in form of round, square or rectangular ferrule. Proposed method makes it possible to obtain germanium crystals of universal shape with no defects in structure, free from mechanical stresses and homogeneous in distribution of admixtures.

EFFECT: increased productivity; reduced technological expenses; increased yield of product.

2 cl, 2 dwg, 2 ex