16.5
Conclusion
The most recent advances in the chemistry of porous silicon and its applications
for chemical systems show that this material is a compatible substrate for a wide
variety of analytical and physiological pursuits. The combination of luminescence,
surface area and porosity, chemical reactivity, and other novel properties designate
porous silicon as a versatile component for optoelectronics, bionics, and sensors,
among other devices. Essential to the success of these devices is precise and deliberate control over the interfacial chemistry of this material. Through selective
organic and inorganic chemistry at the surface, modulation of the nanocrystallite
properties can be achieved for the design and implementation of chemically durable and intelligent substrates.
Fig. 16.22. DIOS-MS spectra of diethylamine measured from
porous silicon (top), F
À -etched roughened silicon (bottom),
and O
À -etched roughened HOPG (middle).
16 Recent Developments in the Chemistry and Chemical Applications of Porous Silicon
546