Theoretical and Computational Analysis of Confinement Regimes in Spherical ZnO, CdS
0Theoretical and Computational Analysis of Confinement Regimes in Spherical ZnO, CdS, and CdSe Colloidal Quantum Dots
Layman Abstract : Quantum dots are tiny particles with special light and electronic properties, useful for electronics and photonic devices. This study used computer simulations to study how the size of ZnO, CdS, and CdSe quantum dots affects their behavior. The researchers identified size ranges where the quantum dots show strong, medium, or weak quantum effects, which change how they absorb and emit light. These findings help improve the design of quantum dots for high-tech applications like sensors, transistors, and optical devices.
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Original Abstract : Quantum dots (QDs) exhibit unique optical and electronic properties due to quantum confinement effects, making them promising candidates for various applications. This study investigates the confinement regimes of colloidal spherical ZnO, CdS, and CdSe quantum dots through computational simulations and theoretical analysis. Confinement regimes were delimited for each of the quantum dots based on the exciton Bohr radius of carriers of the respective semiconductor. The results delineate size-dependent confinement effects, revealing critical size ranges for strong, intermediate, and weak confinement regimes and their associated energy levels. These findings provide valuable insights into optimising quantum dot performance for applications in optoelectronics, field-effect transistors, and photonic technologies, advancing the understanding of these semiconductor nanostructures.
View Book: https://doi.org/10.9734/bpi/crpps/v7/4090
#Quantum_dots #stemming #quantum_confinement_effects #zinc_oxide #cadmium_sulphide #optical #electronic_behaviors #semiconductor_nanocrystals