  The optical and electronic properties of crystalline Li2TeO3, which is a
tellurite glass, is studied in the framework of density functional theory (DFT)
implemented software SIESTA. The material has monoclinic symmetrized structure
and the unit or primitive cell of the material, periodic in all directions has
been taken to study the properties. The electronic structures show that it is a
wide-gap semiconductor and the property changes to metallic when subjected to
electric field. This tunable property can be used in various fields of
electronics. The optical properties studied tells that Li2TeO3 can be a
promising material to be used as a hole transport material (HTM) for developing
efficient perovskite solar cell including other applications as well.
