The dielectric composite nanostructures (DCN) composed of non-closely hexagonal packed SiNx nanodomes and their underlying SiNx single film were demonstrated, which aims for decorating single-junction GaAs solar cells to reduce their surface reflection. The broadband antireflection performance for this DCN was experimentally measured, with the average reflectivity of 3.11% in the spectrum range from 300 nm to 920 nm, which is attributed to the combination of multiple modes including Mie resonance scattering, guided-mode resonance, etc., and that was verified by the theoretically modelling using finite difference time domain (FDTD) method. The simulation results indicate that this DCN is capable of improving the performance of the GaAs solar cells in terms of broadband antireflection and highly efficient light trapping properties.
KEYWORDS: Optoelectronics, Light emitting diodes, LED displays, Sensors, Automatic tracking, Infrared radiation, Lamps, Infrared detectors, Signal processing, Control systems
Driven by the idea of students-centered, aptitude-oriented cultivation, that is to educate each student according to his natural ability, the course content of the optoelectronic technology is optimized and integrated, and the extension project is added according to the ability of different students, which involves the scientific frontier and the practical training. To ensure the final implementation of the course reform, the assessment modes are designed and students are allowed to select their assessment test according to their interest and ability, just like a set menu. No matter what kind of assessment modes the students choose, all classmates are required to give an oral presentation about their extension project. The realization of multifaceted assessment enhances students’ participation and devotion to the course.
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