研究目的
Investigating the enhancement of light absorption and responsivity in Schottky barrier photodetectors using gold gratings on silicon carbide substrate.
研究成果
The proposed Au grating on SiC substrate structure significantly enhances light absorption and responsivity in Schottky barrier photodetectors, with high responsivity values obtained at specific wavelengths. The study demonstrates the potential of SiC-based plasmonic photodetectors in visible and near-infrared regions.
研究不足
The study is based on simulations, and practical fabrication challenges such as precise control of grating dimensions and Ti interlayer thickness are not addressed. The potential contribution from hot holes is excluded in the calculation of photocurrent.
1：Experimental Design and Method Selection:
The study utilizes rigorous coupled wave analysis (RCWA) for simulating the absorbance and responsivity of the proposed Au grating on SiC substrate structure.
2：Sample Selection and Data Sources:
The optical constants of Au and Ti are taken from literature, and the refractive index values of 4H-SiC and 6H-SiC are calculated from dispersion relations.
3：List of Experimental Equipment and Materials:
The study involves simulations without physical experiments, focusing on Au gratings with Ti interlayer on SiC substrate.
4：Experimental Procedures and Operational Workflow:
The simulation involves varying grating parameters (width, height, periodicity) and incident angle to analyze their effects on absorbance and responsivity.
5：Data Analysis Methods:
The responsivity is calculated based on Fowler’s model, and the absorbance is derived from reflectance and transmittance analysis.
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