00886nam a22001937a 4500 0 0 0 1 RIU RIU 2025-04-09 Riphah International University 0 530 NAJ 102825 2025-04-09 00:00:00 1 2025-04-09 TH 57134 57134 Riphah International University 530 NAJ Najma Sultan (29224) Tailoring the optoelectronic properties of S doped Cu2ZnSnSe4 a density functional theory study Islamabad (Unpublished) 2025 xiii, 47 p. : ill. ; 30 cm. +CD Submitted in partial fulfillment of the requirements for the degree of Master of Philosophy in Physics to the Department of Basic Sciences. Includes bibliographical references. Thesis supervisor: Dr. Amin ur Rahman Thesis (M.Phil.)--Riphah International University, 2025 English Physics Positron emission tomography Hydrobromide acid Refractive spectra Ultraviolet Energy DBS FEAS TH