Abstract
The particle size dependent thermodynamic functions for the formation of electrons and holes are addressed for semiconductor CdSe nanocrystals (NCs). We recorded the temperature dependent absorbance spectra for a size series of colloidal CdSe NCs in a polymer composite material and analyzed the band-gap behavior. We report the analytical investigation of the temperature dependent band gap as a function of the particle size using two common theoretical approaches. The band gap as a function of temperature and particle size is mainly influenced by the large entropic values for the formation of electrons and holes.
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