SciELO - Scientific Electronic Library Online

vol.55 issue5An indirect skin emissivity measurement in the infrared thermal range through reflection of a CO2 laser beamOptimal configuration of a finite mass reservoir isothermal chemical engine for maximum work output with linear mass transfer law author indexsubject indexsearch form
Home Pagealphabetic serial listing  

Services on Demand




Related links

  • Have no similar articlesSimilars in SciELO


Revista mexicana de física

Print version ISSN 0035-001X


SOLACHE-CARRANCO, H.; JUAREZ-DIAZ, G.; MARTINEZ-JUAREZ, J.  and  PENA-SIERRA, R.. Estudio de la cristalización de Cu2O y su caracterización por difracción de rayos X, espectroscópica Raman y fotoluminiscencia. Rev. mex. fis. [online]. 2009, vol.55, n.5, pp.393-398. ISSN 0035-001X.

The growth of poly crystalline cuprous oxide (Cu2O) foils with great single-crystalline areas by the secondary crystallization method from polycrystalline copper in dry air atmosphere is reported. The method comprises two stages; in the first one polycrystalline copper foils were converted in cuprous oxide at 1020°C by some hours depending of their thickness, in the second stage the growth of great crystalline areas are promoted by annealing the Cu2O foils at temperatures near to 1100°C by extended periods. The growth kinetics of the crystallites was studied; X-ray diffraction (XRD), Raman spectroscopy scattering and photoluminescence (PL) measurements were done as a function of the crystallization conditions. The XRD and Raman scattering measurements reveal the existence of pure Cu2O phase. The PL spectra taken from 10 to 180K define the main paths of the radiative recombination processes. Besides of the excitonic transition X° at 610 nm, three strong bands at 720, 810 and 920 nm associated with relaxed excitons at oxygen and copper vacancies, respectively was detected. The relative intensity of the PL transitions of excitons at vacancies change according to the duration of the crystallization process.

Keywords : Cu2O; secondary crystallization; semiconductors; X-ray diffraction; Raman scattering; photoluminescence.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License