基于表面光电压谱的量子化能级测量  

Measuring quantized energy levels based on surface photovoltage spectra

作　　者：吴雅苹 张纯淼[1,2,3,4] 赵子锐 孟恺[1,2] 衣行健 王一帆 王新然 WU Yaping;ZHANG Chunmiao;ZHAO Zirui;MENG Kai;YI Xingjian;WANG Yifan;WANG Xinran(College of Physical Science and Technology,Xiamen University,Xiamen 361005,China;Engineering Research Center for Micro-Nano Optoelectronic Materials and Devices at Education Ministry,Xiamen University,Xiamen 361005,China;National Integrated Circuit Production and Teaching Integration Innovation Platform of Xiamen University,Xiamen University,Xiamen 361005,China;Key Laboratory of Semiconductors and Applications of Fujian Province,Xiamen University,Xiamen 361005,China)

机构地区：[1]厦门大学物理科学与技术学院,福建厦门361005 [2]厦门大学微纳光电子材料与器件教育部工程研究中心,福建厦门361005 [3]厦门大学国家集成电路产教融合创新平台,福建厦门361005 [4]厦门大学福建省半导体材料及应用重点实验室,福建厦门361005

出　　处：《物理实验》2023年第10期27-34,共8页Physics Experimentation

基　　金：国家自然科学基金面上项目(No.62274139);厦门大学2021年“课程思政”示范课程建设项目。

摘　　要：量子结构材料与技术在前沿科学领域的应用日益广泛,量子化能级的探测与调控具有重要的教学与科研意义.本文设计搭建基于表面光电压效应的量子化能级测量装置,控制步进电机带动闪耀光栅旋转,将氙灯的复色光分解为单色光,并照射到InGaN/GaN量子阱上,采集光电压信号得到其表面光电压扫描谱线,并结合光学偏振片、磁铁与控温装置等实现量子能级、自旋能级的探测以及能级的温度调控.The application of quantum structural materials and technology in frontier science is increasingly extensive.The detection and control of quantized energy levels is of great significance in teaching and scientific research.Here,a quantized energy level measuring device based on surface photovoltage spectrum scanning was designed and built.A stepping motor was programmed to drive the blazed grating to rotate and decompose the xenon lamp from polychromatic into monochromatic light.The monochromatic light irradiated onto InGaN/GaN quantum well to generate the surface photovoltage signal which was collected by scanning the wavelength of the incident light.Further combining with optical polarizers,magnet and temperature controller,the quantum energy level and spin energy level were both detected,and the thermal regulation was also realized.

关 键 词：表面光电压效应 量子化能级 InGaN/GaN量子阱 能级调控 

分 类 号：O431.2[机械工程—光学工程]