Muhammad Talha Density functional theory of lead free perovskites photovoltaics and optoelectronics : M.Phil Physics Muhammad Talha - Islamabad: AIOU, 2019. - xi, 67p. HB Eng Standard No.: https://i.ibb.co/DcNFC41/Thesis-cover.png Subjects--Topical Terms: LeadDissertations, Academic-- M.Phil Physics Dewey Class. No.: 669.4 / TAD