твердий розчин

Based on thermodynamic constants, the concentration limits of the initial zinc-containing salt and the range of pH values at which the depositions of ZnS and ZnSe without Zn(OH)2 are possible were calculated. The boundary conditions of the formation of the ZnSxSe1–x solid solution in the hydroxide-hydrazine-thiourea-selenium system were defined by the overlap area between the constructed ZnS and ZnSe formation zones. The task of complex intermolecular interaction between complexed zinc ions and two chalcogenizers in the working solution was solved on the basis of mathematical calculations.

Solid solutions films of mercury sulfide-selenide (HgS1–xSex) were synthesized on glass substrates by the chemical bath deposition method. Theoretical calculations of the boundary conditions for the HgS and HgSe formation in the mercury-tartrate-thiourea-selenosulfate system were made. The boundary conditions of HgS1–xSex were defined by the overlap area between the constructed HgS and HgSe formation zones. The X-ray diffraction and elemental analysis showed that the obtained films are single-phase and consist of HgS1–xSex substitutional solid solutions in zincblende modification.

У рамках кристалоквазіхімічного формалізму уточнено моделі точкових дефектів кристалів у системі Pb-Ві-Te з урахуванням амфотерної дії домішки в легованому вісмутом плюмбум телуриді PbTe:Bi та розглянуто механізми утворення твердих розчинів РbТе-ВіТе і РbТе-Ві2Те3. Розраховано залежності холлівської концентрації та концентрації точкових дефектів від складу і початкового відхилення від стехіометрії в основній матриці.