研究目的
Investigating the interband optical absorption between the electron and hole in a wurtzite GaN/InxGa1?xN/GaN spherical core–shell quantum dot (CSQD) including a strong built-in electric field (BEF), and studying the effects of the size and the ternary mixed crystal on the optical absorption coefficients (ACs) and refraction index changes (RICs).
研究成果
The study concludes that the interband optical absorption in wurtzite GaN/InxGa1?xN/GaN spherical CSQDs is significantly influenced by the component x, core radius, and well width, with the well width having a stronger effect than the core radius. These findings can guide the fabrication of optical devices and further theoretical and experimental studies on the optical properties of spherical CSQDs.
研究不足
The study is theoretical and does not involve experimental validation. The effects of barrier thickness on the ACs and RICs are not discussed due to their relatively small impact.
1：Experimental Design and Method Selection:
The study is based on the principle of density matrix and the finite element method to investigate the interband optical absorption in a wurtzite GaN/InxGa1?xN/GaN spherical CSQD with BEF.
2：Sample Selection and Data Sources:
The samples are theoretical models of wurtzite GaN/InxGa1?xN/GaN spherical CSQDs with varying component x, core radius, and well width.
3：List of Experimental Equipment and Materials:
The study uses theoretical models and computational methods, with no physical equipment listed.
4：Experimental Procedures and Operational Workflow:
The eigenstates of the electron and hole are solved by the FEM, and the TMC and size effects on optical ACs and RICs are discussed using the density matrix theory.
5：Data Analysis Methods:
The results are analyzed to observe the effects of component x, core radius, and well width on the optical properties of the CSQDs.
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