MadSci Network: Chemistry

Re: How do covalent network solids end?

Date: Fri Jan 19 20:21:17 2001
Posted By: Uncle Al Schwartz, Organic synthetic chemist
Area of science: Chemistry
ID: 979682981.Ch

According to the Stanford University thesis of Bradford Pate looking at 
diamond cleaved under ultrahigh vacuum with Low Energy Electron 
Diffraction, stable diamond surface terminates in C-H.  Silicon does the 
same thing in hydrofluoric acid bath, Si-H rather than Si-F expected on 
purely bond strength arguments. B. B. Pate, Surf. Sci. 165 83 (1986) Physica 117B & 118B 783 (1983) The Si-H surface is important to the quality of semiconductor devices. Si-D (deutrerium) gives you several tens of degrees higher maximum operating temprature. Uncle Al!

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