This detailed electron microscope study of porous silicon compares the different structures of
macro-, meso-and microporous material. Mesoporous silicon of high porosity (∼-80%) …

We have used electron microscopy to examine the microstructure of porous silicon films over
a wide range of doping levels, and photoluminescence spectroscopy to study their optical …

Atomic force microscope and scanning tunneling microscope images of photoluminescent
anodically etched porous silicon are presented and the development of the porous structure …

Recent studies have shown that an electrochemical etch of silicon produces a microporous
material that photoluminesces.'-3 This visible photoluminescence (PL) has been assigned to …

The observation of red‐, near‐infrared, and nonphotoluminescent porous silicon structures
both by transmission electron microscopy as well as by atomic force microscopy provides a …

We report on micro-Raman spectroscopy studies of porous silicon which show an
'amorphous silicon Raman line at 480 R cm-'from regions that emit visible …

Porous silicon that strongly emits in the visible was analyzed using Raman scattering. The
spectrum peaks near 508 cm~', has a width of-40 cm I~', and is very asymmetric. Using a …

We report resonantly excited photoluminescence (PL) spectroscopy of highly porous silicon.
In the PL spectra we observe satellite structure due to the participation of momentum …

We report photoluminescence emission and photoluminescence excitation studies of porous
silicon obtained from p-type Si (111) wafers over the range of 0.9–13.0 eV (∼ 400–1400 …

Although porous silicon has been known for more than 35 years, only in 1990 was it
recognized that porous silicon shows an increased bandgap and efficient room-temperature …