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Band structure and optical properties of amber studied by first principles

Author:
Rao, Zhi-Fan   Zhou, Rong-Feng  


Journal:
Physica B: Condensed Matter


Issue Date:
2013


Abstract(summary):

The band structure and density of states of amber is studied by the first principles calculation based on density of functional theory. The complex structure of amber has 214 atoms and the band gap is 5.0 eV. The covalent bond is combined C/O atoms with H atoms. The O 2p orbital is the biggest effect near the Fermi level. The optical properties' results show that the reflectivity is low, and the refractive index is 1.65 in visible light range. The highest absorption coefficient peak is at 172 nm and another higher peak is at 136 nm. These convince that the amber would have a pretty sheen and that amber is a good and suitable crystal for jewelry and ornaments. [All rights reserved Elsevier].


Page:
32-35


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