Controlling of optical energy gap of Co-ferrite quantum dots in poly (methyl methacrylate) matrixEl-Sayed, H.M. ; Agami, W.R.
Abstract© 2015 Elsevier Ltd. All rights reserved. Different crystallite sizes of Co-ferrite nanoparticles were prepared and dispersed in the matrix of poly (methyl methacrylate) (PMMA) polymer. The effect of crystallite size on the structure and optical energy gap of Co-nanoferrite/PMMA composite has been studied. The optical energy gap of Co-ferrite was greatly affected by the crystallite size. This result was discussed in terms of the formation of electron-hole exciton using particle in a box model. The effective mass and the Bohr radius of the formed exciton have been calculated from the spectroscopic measurements.
|Issue Date||2015||Journal||Superlattices and Microstructures||URI||http://research.asu.edu.eg/123456789/685||DOI||651
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