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The informaiton for gallium is wrong. It should be 28.9 not 42.5
The information for Silicon doesn't look right. Several sources online say the electron affinity should be 4.05 eV for Silicon. See, for instance, this document published by the silicon wafer manufacturer Virginia Semiconductor: http://www.virginiasemi.com/pdf/generalpropertiessi62002.pdf. The textbook "Semiconductor Device Fundamentals" by Robert F. Pierret lists the electron affinity of Silicon at 4.03 eV on page 478.
I totally agree with Si electron affinity. Should be 4.05 eV. Balinga's book has this value, Sze's book has this value also. Soathana (talk) 09:18, 17 March 2014 (UTC)