精品文档---下载后可任意编辑GaAs 半导体纳米线的光导特性讨论中期报告摘要：本文介绍了针对 GaAs 半导体纳米线的光导特性讨论的中期报告。实验结果表明，GaAs 半导体纳米线具有优异的光学性质，并且在一定尺寸范围内存在光导作用。采纳原子力显微镜测量了纳米线的直径和长度，分别为 100 nm 和数微米级。通过光学显微镜观察到纳米线在各个方向上均匀发出光线。采纳光学谱仪进行光学性质测试，获得了纳米线的光致发光谱和荧光谱，说明纳米线具有良好的光学发光性能。进一步进行了激光外延及等离子体刻蚀制备纳米线阵列，制备出了具有优异光导效果的阵列样品。关键词：GaAs 半导体纳米线；光导特性；光致发光谱；荧光谱；纳米线阵列Introduction:GaAs semiconductor nanowires have attracted great attention due to their unique electrical and optical properties. In particular, their light guiding properties have potential applications in optoelectronics and photonics. In this midterm report, we present the results of our ongoing study on the light guiding properties of GaAs semiconductor nanowires.Experimental Methodology:GaAs semiconductor nanowires were synthesized using metal-organic vapor-phase epitaxy (MOVPE) on an n-type GaAs(111)B substrate. The diameter and length of the nanowires were measured using atomic force microscopy (AFM) and scanning electron microscopy (SEM). The optical properties of the nanowires were studied using a fluorescence spectrometer and an optical microscope.Results and Discussion:SEM images showed that the GaAs nanowires had a diameter of approximately 100 nm and length of a few micrometers. Optical microscopy images revealed that the nanowires emitted light in all directions. Fluorescence spectra and photoluminescence spectra of the nanowires were obtained using a fluorescence spectrometer, which indicated the excellent optical properties of the nanowires. Laser 精品文档---下载后可任意编辑epitaxial growth and plasma etching were used to produce nanowire arrays with excellent light guiding properties.Conclusion:In conclusion, GaAs semiconductor nanowires have excellent optical properties and can exhibit light guiding properties within a certain range of sizes. Through a combination of MOVPE, AFM, SEM, fluorescence spectroscopy, and plasma etching techniques, nanowire arrays with excellent light guiding properties have been produced. This research provides potential applications for GaAs semiconductor nanowires in optoelectronics and photonics.
