Insights Blog
-- Browse All Articles --
Physics Articles
Physics Tutorials
Physics Guides
Physics FAQ
Math Articles
Math Tutorials
Math Guides
Math FAQ
Education Articles
Education Guides
Bio/Chem Articles
Technology Guides
Computer Science Tutorials
Forums
Intro Physics Homework Help
Advanced Physics Homework Help
Precalculus Homework Help
Calculus Homework Help
Bio/Chem Homework Help
Engineering Homework Help
Trending
Featured Threads
Log in
Register
What's new
Search
Search
Search titles only
By:
Intro Physics Homework Help
Advanced Physics Homework Help
Precalculus Homework Help
Calculus Homework Help
Bio/Chem Homework Help
Engineering Homework Help
Menu
Log in
Register
Navigation
More options
Contact us
Close Menu
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Forums
Homework Help
Introductory Physics Homework Help
What happens when semiconductor melt?
Reply to thread
Message
[QUOTE="opuktun, post: 1605642, member: 111095"] [h2]Homework Statement [/h2] For intrinsic (undoped) silicon with a band gap of 1.1eV at 1500 K, what is the population of conduction electrons (m-3)? Comment on your result. Note that the melting point of silicon is 1687 K, and atom density of silicon is 5 x 10^28 atoms m-3. Note: My main problem is to "comment" [h2]Homework Equations[/h2] [url]http://hyperphysics.phy-astr.gsu.edu/HBASE/solids/fermi3.html#c1[/url] <-- see here for the steps taken In the end, I got 3.96x10^22 electrons/m3 which is close to the one given by the applet (maybe 'cos I used different values) [h2]The Attempt at a Solution[/h2] I was thinking of writing something like: Although this equation may imply that increase in temperature will lead to increased conductivity (because increased no. of conducting electrons), we have to consider the state of the matter in which it is in. At higher temperature such as 1700 K, melting would have occurred. [B]This may result in lower value of conductivity calculated than the actual. This is because melting would have caused the semiconductor to be in liquid state. Thus, the positive metal ions can carry charges along with the sea of electron.[/B] But I'm not too sure if the bold sentence is correct. I would really appreciate it if you guys can give me some feedback on this answer. Thanks! [/QUOTE]
Insert quotes…
Post reply
Forums
Homework Help
Introductory Physics Homework Help
What happens when semiconductor melt?
Back
Top