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V. Consonni,G. Feuillet 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.53 No.5
A study of the structural and the optical properties has been carried out before, upon, and after the coalescence of Cl-doped CdTe islands. Coalescence is found to induce high tensile stresses with the formation of grain boundaries. These stresses are eventually relaxed through the generation of compressive stresses related to the segregation of Cl atoms in the vicinity of grain boundaries. These segregation phenomena also influence the compensation mechanisms: a preferential formation of β acceptor complexes instead of A centers is directly observed by cathodoluminescence measurements. Furthermore, the coalescence and the post-coalescence stresses contribute to an orientation-dependent driving force for the grain growth, which leads to a progressive texturation of the material.