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does anyone know where one can find a list, database, book of experimental bandgap values of semiconductors? Is there such a collection? Or do I need to scour papers one at a time to get the values?

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NIST has one from 1973 (second bullet on the right side of the page) –  Kyle Kanos Mar 20 at 20:25
    
There's also Landolt-Boernstein and the somewhat briefer website of the Ioffe Institute. –  The Photon Mar 21 at 5:02
    
Thanks guys! I think those are the best sources available! Cheers! =) –  Yoon Ji Wei Mar 21 at 13:06
    
Have you Googled it? –  Sachin Shekhar Jun 30 at 6:05

2 Answers 2

I actually wanted to post this as a comment but due to a lack of points I cannot do so.

http://en.wikipedia.org/wiki/List_of_semiconductor_materials

This is a pretty big list of semiconductors including their bandgaps and whether they are direct or not.

I hope this is what you are looking for.

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I don't think this should be a comment. It answers the question, so it should be an answer. –  David Z May 27 at 20:59

Converting a comment into an answer so the question will hopefully quit popping to the front page.

Three useful sources are

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