R. Dietrich et al., TOF-SIMS AND FT-IR INVESTIGATIONS OF SURFACE-MODIFIED SILICON-WAFERS - POROUS SILICON, Fresenius' journal of analytical chemistry, 349(1-3), 1994, pp. 221-222
Surface modification of silicon wafers by anodic etching in hydrofluor
ic acid results in the formation of porous silicon layers consisting o
f nanocrystallites covered with SiH bonds. A combination of high resol
ution time-of-flight Secondary lon Mass Spectrometry (TOF-SIMS) and Fo
urier Transform Infrared Spectroscopy (FT-IR) was used to study the su
rface chemistry of this new material.