TY - EJOU AU - Mustafa, A. AU - Al-Rashid, S. Turki TI - Cohesive energy model for the optical properties in nanostructured materials of zinc sulfide and cadmium selenide T2 - Chalcogenide Letters PY - 2024 VL - 21 IS - 5 SN - 1584-8663 AB - Applying the cohesive energy model, this research theoretically studies how the size of nanoparticles affects their optical characteristics. The findings demonstrate that optical characteristics are size-dependent for nanoparticles, with an exponentially growing energy gap for nanoparticles on a scale of less than 4 nm. As the size of nanoparticles is reduced, the absorption wavelength also decreases. Compounds undergo a transition to a higher energy spectral area (blue shift) when their wavelength decreases; this change can make these compounds effective in certain optical nanodevices. KW - Energy band gap KW - quantum dot (QD) KW - Model of cohesive energy and optical characteristics DO - 10.15251/CL.2024.215.407