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About: Brus equation     Goto   Sponge   NotDistinct   Permalink

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The Brus equation can be used to describe the emission energy of quantum dot semiconductor nanocrystals (such as CdSe nanocrystals) in terms of the band gap energy Egap, Planck's constant h, the radius of the quantum dot r, as well as the effective mass of the excited electron me* and of the mh*. The overall equation is Egap, me*, and mh* are unique for each nanocrystal composition.For example, with CdSe nanocrystals: Egap (CdSe) = 1.74 eV = 2.8·10−19 Joules,me* (CdSe) = 0.13 me = 1.18·10−31 kg,mh* (CdSe) = 0.45 me = 4.09·10−31 kg.