Resumo

PEREZ-RODRIGUEZ, A.; FLORES-ACOSTA, M.; RODRIGUEZ-MIJANGOS, R.  e  PEREZ-SALAS, R.. Cu halide nanoparticle formation by diffusion of copper in alkali halide crystals. Rev. mex. fis. [online]. 2006, vol.52, n.2, pp.151-154. ISSN 0035-001X.

Copper atoms have been introduced by diffusion in NaCl, KCl and KBr crystals at 500°C. The crystals have been optically analyzed with photoluminescence measurements and by scanning electron microscopy. The emission and excitation spectra measured at low temperatures show the exciton confinement effect, indicating the formation of CuX (X=Cl, Br) nanoparticles, which has been confirmed by electron microscopy images. This is proposed as an alternative method to obtain CuX nanoparticles in alkali halides crystals.

Palavras-chave : Nanoparticles; photoluminescence; alkali halides; defects.

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