Timeline for Why doesn't diamond conduct electricity but silicon does?
Current License: CC BY-SA 4.0
6 events
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Mar 23, 2020 at 19:10 | comment | added | Mathew Mahindaratne | @Ed V: Great comment to answer OP's question. I appreciate it. :-) | |
Mar 23, 2020 at 19:07 | comment | added | Ed V | Below germanium, you have tin and lead. Lead is a metal (no band gap), but tin has two allotropes: white tin is ordinary metallic tin, but gray tin has the diamond, Si, and Ge crystal structure and is not a metal. See the wiki article on ‘tin’. Metals have no band gap, but gray tin does. | |
Mar 23, 2020 at 18:00 | comment | added | timeinbaku | Thanks for the great answer, but I am curious as to why the band gap decreases going down a group? | |
Mar 23, 2020 at 17:59 | vote | accept | timeinbaku | ||
Mar 23, 2020 at 13:30 | comment | added | Ed V | +1 Excellent answer: at the right level of detail, without getting bogged down in the little band diagrams, Fermi levels, and on and on. | |
Mar 23, 2020 at 10:42 | history | answered | Mathew Mahindaratne | CC BY-SA 4.0 |