A Comparative Study on Surface Morphology, Optical and Thermal Behaviour of Undoped and Cu Doped ZnO Nanostructures. Bangladesh Journal of Physics, [S. l.], v. 31, n. 2, p. 75–81, 2024. DOI: 10.3329/bjphy.v31i2.79521. Disponível em: https://www.banglajol.info/index.php/BJPhy/article/view/79521. Acesso em: 25 jun. 2026.