TY - JOUR
T1 - Infiltration of ZnO in mesoporous silicon by isothermal Zn annealing and oxidation
AU - De Melo, C.
AU - Santana, G.
AU - Torres-Costa, V.
AU - Behar, M.
AU - Dias, J. Ferraz
AU - Colaux, J. L.
AU - Contreras-Puente, G.
AU - De Melo, O.
PY - 2016
Y1 - 2016
N2 - In this work a two-step procedure is reported for the formation of ZnO/porous silicon (PS) composites in which ZnO is embedded in the pores of sponge like mesoporous silicon. The procedure consists of an isothermal annealing of the PS layer in Zn vapors using a close space configuration and a subsequent oxidation of the Zn infiltrated in the pores. The oxidation agent and the annealing duration are optimized for a complete oxidation of the infiltrated Zn. Structure, morphology and composition of the samples were characterized by X-ray diffraction (XRD), extended X-ray absorption fine structure (EXAFS), Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS), Rutherford backscattering spectrometry (RBS) and photoluminescence (PL). The ZnO/PS composite was observed to exhibit a broad luminescent band covering almost all the visible range.
AB - In this work a two-step procedure is reported for the formation of ZnO/porous silicon (PS) composites in which ZnO is embedded in the pores of sponge like mesoporous silicon. The procedure consists of an isothermal annealing of the PS layer in Zn vapors using a close space configuration and a subsequent oxidation of the Zn infiltrated in the pores. The oxidation agent and the annealing duration are optimized for a complete oxidation of the infiltrated Zn. Structure, morphology and composition of the samples were characterized by X-ray diffraction (XRD), extended X-ray absorption fine structure (EXAFS), Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS), Rutherford backscattering spectrometry (RBS) and photoluminescence (PL). The ZnO/PS composite was observed to exhibit a broad luminescent band covering almost all the visible range.
UR - http://www.scopus.com/inward/record.url?scp=84950131144&partnerID=8YFLogxK
U2 - 10.1149/2.0031602jss
DO - 10.1149/2.0031602jss
M3 - Article
AN - SCOPUS:84950131144
SN - 2162-8769
VL - 5
SP - P6-P11
JO - ECS Journal of Solid State Science and Technology
JF - ECS Journal of Solid State Science and Technology
IS - 2
ER -