Tripathy, Susanta Kumar2017-11-222017-11-222014-01http://hdl.handle.net/123456789/890enHohenberg kohn (HK) theoremsBorn oppenheimer (BO) approximationBloch’s theoremStructural properties of ZnSiP2Electronic properties of ZnSiP2ECEPh.DElectronic and second order nonlinear properties of optoelectronic materialsThesis