TY - JOUR
T1 - Importance of the electrolyte in obtaining porous silicon and how it modifies the optical and structural proprieties
T2 - Optical and microstructural investigation
AU - Severiano, F.
AU - García, G.
AU - Castañeda, L.
AU - Salazar Villanueva, M.
AU - Méndez, J. Flores
N1 - Publisher Copyright:
© 2015 F. Severiano et al.
PY - 2015
Y1 - 2015
N2 - The effect of using different electrolytes in the physical and optical properties of porous silicon was studied. To do this porous silicon (PS) samples photoluminescent in the visible range from (100) oriented n-type crystalline silicon prepared by anodic etching were obtained. The first electrolyte was composed of a mixture of hydrofluoric acid (HF) and ethanol (CHCHOH) in a ratio of 1: 2, respectively. The second was composed of hydrofluoric acid (HF), ethanol (CHCHOH), and hydrogen peroxide (H in a ratio of 1: 1: 2, respectively. Raman scattering, photoluminescence (PL), gravimetry, scanning electron microscopy (SEM), and energy dispersive spectrometer (EDS) measurements on the PSL were carried out. Raman scattering showed that the disorder in the samples obtained with His greater than in the samples obtained without this. The PL from PS increased in intensity with the incremental change in the anodization time and showed a blueshift. The blueshift of PL is consistent with the reduction in size of the silicon nanocrystallites. The sizes of nanocrystals were estimated to be 3.08, 2.6, and 2.28 nm. The gravimetric analysis showed that the porosity increased with the incorporation of H SEM images (morphological analysis) showed an incremental change in the quantity and in the porous size.
AB - The effect of using different electrolytes in the physical and optical properties of porous silicon was studied. To do this porous silicon (PS) samples photoluminescent in the visible range from (100) oriented n-type crystalline silicon prepared by anodic etching were obtained. The first electrolyte was composed of a mixture of hydrofluoric acid (HF) and ethanol (CHCHOH) in a ratio of 1: 2, respectively. The second was composed of hydrofluoric acid (HF), ethanol (CHCHOH), and hydrogen peroxide (H in a ratio of 1: 1: 2, respectively. Raman scattering, photoluminescence (PL), gravimetry, scanning electron microscopy (SEM), and energy dispersive spectrometer (EDS) measurements on the PSL were carried out. Raman scattering showed that the disorder in the samples obtained with His greater than in the samples obtained without this. The PL from PS increased in intensity with the incremental change in the anodization time and showed a blueshift. The blueshift of PL is consistent with the reduction in size of the silicon nanocrystallites. The sizes of nanocrystals were estimated to be 3.08, 2.6, and 2.28 nm. The gravimetric analysis showed that the porosity increased with the incorporation of H SEM images (morphological analysis) showed an incremental change in the quantity and in the porous size.
UR - http://www.scopus.com/inward/record.url?scp=84938117631&partnerID=8YFLogxK
U2 - 10.1155/2015/942786
DO - 10.1155/2015/942786
M3 - Artículo
AN - SCOPUS:84938117631
SN - 1687-4110
VL - 2015
JO - Journal of Nanomaterials
JF - Journal of Nanomaterials
M1 - 942786
ER -