COMPUTATIONAL MODELING OF THE LOW SUPERSATURATION NUCLEATION IN CRYSTAL-GROWTH BY CONTACTLESS PHYSICAL VAPOR TRANSPORT

Low supersaturation nucleation is modeled by numerical calculation of the thermal field in crystal growth by ''contactless'' physical vapor transport technique, Dependence of the thermal field/shape of the sour ce on the thermal profile of the furnace and the system geometry is in vestigated. Optimization of the nucleation process by using a proper t emperature field is discussed. Results of the modeling are compared wi th experimental results obtained using cadmium telluride as the source material. (C) 1998 Elsevier Science B.V. All rights reserved.