Influence of the Size and Dielectric Environments on the Optical Properties in CdS/ZnS Core-Shell Quantum Dot
Özet
In this work, the electronic and optical properties of CdS/ZnS core–shell quantum dots (CSQDs) capped in diferent matrices
were investigated theoretically. Through the efective mass approximation (EMA) and the density matrix approach (DMA),
the quantized energy levels and their corresponding wave functions of the system were obtained by solving the Schrödinger
equation in a spherical coordinates system. In addition, the efects of the incident optical intensity, the number of dots per
unit volume, dielectric mismatch of the organic and inorganic matrix, and geometric parameters of the structure, such as the
core/shell radius ratio for CdS/ZnS CSQDs on the optical properties, were evaluated and discussed. The results revealed that
both the size and dielectric environments had a substantial efect on the optical features of these nanostructures.