Abstract: We have systematically studied the evolution of the optical absorption of free-standing PS films during thermal oxidation at 200°C in air. Our experiment results show the evolution of transmission curve is quite complicated, which red-shifts first and then blue-shifts during thermal oxidation. At the same time, the transmission at the low energy decreases first and then increases. We propose an explanation as follows: (1) the energy gap associated with each crystallite should increase during thermal oxidation process, due to the quantum confinement effect; (2) the energy gap should decrease with an increase in oxygen termination atoms. Both the increasing of the gap due to the quantum confinement effect and the decreasing of the g...
Abstract While numerous publications deal with the properties and applications of porous silicon (PS...
Three amorphous silicon oxycarbonitrides are prepared by thermal decomposition of a polymeric precur...
Various explanations have been proposed for the strong visible luminescence from porous silicon (PS...
We have systematically studied the evolution of the optical absorption of freestanding PS films duri...
We have systematically studied the evolution of the optical properties of free-standing porous silic...
We have prepared noncollapsed free-standing porous silicon (PS) films with various porosities even h...
The observed blue shift of both the PL and the absorption edge in porous silicon is generally unders...
International audienceIn order to understand the optical loss mechanisms in porous silicon based wav...
The changes in photoluminescence and FTIR spectra of porous silicon subjected to oxidation were exam...
The morphological properties of the freshly and oxidized porous silicon at oxidation time (60, 90) s...
A systematic study of the dependence of photoluminescence from porous silicon (PS) on oxidation exte...
The optical absorption of an UHV cleaved (111) surface of Si has been investigated as a function of ...
The origin of the photoluminescence (PL) shifts in Porous Silicon (PS) is discussed according to a q...
The evolution of photoluminescence (PL) from a series of as-anodized porous silicon (PS) samples wit...
The diffusion of defects during the thermal growth of SiO2 film on Si(100) in dry O-2 was investigat...
Abstract While numerous publications deal with the properties and applications of porous silicon (PS...
Three amorphous silicon oxycarbonitrides are prepared by thermal decomposition of a polymeric precur...
Various explanations have been proposed for the strong visible luminescence from porous silicon (PS...
We have systematically studied the evolution of the optical absorption of freestanding PS films duri...
We have systematically studied the evolution of the optical properties of free-standing porous silic...
We have prepared noncollapsed free-standing porous silicon (PS) films with various porosities even h...
The observed blue shift of both the PL and the absorption edge in porous silicon is generally unders...
International audienceIn order to understand the optical loss mechanisms in porous silicon based wav...
The changes in photoluminescence and FTIR spectra of porous silicon subjected to oxidation were exam...
The morphological properties of the freshly and oxidized porous silicon at oxidation time (60, 90) s...
A systematic study of the dependence of photoluminescence from porous silicon (PS) on oxidation exte...
The optical absorption of an UHV cleaved (111) surface of Si has been investigated as a function of ...
The origin of the photoluminescence (PL) shifts in Porous Silicon (PS) is discussed according to a q...
The evolution of photoluminescence (PL) from a series of as-anodized porous silicon (PS) samples wit...
The diffusion of defects during the thermal growth of SiO2 film on Si(100) in dry O-2 was investigat...
Abstract While numerous publications deal with the properties and applications of porous silicon (PS...
Three amorphous silicon oxycarbonitrides are prepared by thermal decomposition of a polymeric precur...
Various explanations have been proposed for the strong visible luminescence from porous silicon (PS...