Growth of CdTe and CdZnTe by Solid State Recrystallization. Once again a 'novel' method of CdTe crystal growth ?

摘要

Solid state recrystallization (SSR) is proposed as a novel method of CdTe bulk crystal growth allowing to overcome most of the difficulties met in the growth of this compound, which are reviewed taking into account mainly the ionicity of the Cd-Te chemical bond. A three step strategy is then described : production of stoichiometric CdTe acting as a source for the subsequent growth by sublimation of polycrystalline boules submitted finally to solid state recrystallization. The materials obtained after each step have been characterized electrically, optically and chemically. Large CdTe crystals showing good structural properties have been obtained from this SSR technique.