机电工程技术2025，Vol.54Issue(12)：88-91,101,5.DOI:10.3969/j.issn.1009-9492.2025.00030
基于α粒子的氮化镓探测器电离能测量
Measurement of the Ionization Energy of Gallium Nitride Detectors Based on α Particles
摘要
Abstract
Gallium nitride(GaN),as the third generation semiconductor material,has attracted much attention in the field of power devices because of its high thermal conductivity,high temperature resistance and strong radiation resistance.Ionization energy is a key indicator of detector performance.An experimental scheme is designed to measure the ionization energy of GaN,which mainly uses nuclear radiation detection device and 5.48 MeV α particle to measure the energy spectrum peak of GaN detector and Si detector.According to the voltage corresponding to the measured energy spectrum peak,the measured data of Si detector is used as a reference value to calculate the amount of charge generated by GaN and Si detector.The ionization energy of GaN is obtained by combining theoretical method and calculating formula.According to the measured data,the gain of Si ionization energy detected in the experiment is about 45 mV/MeV,the output signal amplitude of Si detector is about 240 mV,and the output signal amplitude of GaN detector is about 100 mV under the same conditions.The measured spectral peaks of Si detector and GaN are 2 158 KeV and 620 KeV respectively.According to the above test results,the ionization energy of GaN is calculated to be 9.14 eV.关键词
GaN/电离能/探测器Key words
GaN/ionization energy/detector分类
信息技术与安全科学引用本文复制引用
邢宗强,邹继军,朱志甫,黄河,焦伟勇,李冠宇,蔡勋勇,方波..基于α粒子的氮化镓探测器电离能测量[J].机电工程技术,2025,54(12):88-91,101,5.基金项目
国家自然科学基金面上基金资助项目(61964001,12275049,62211530107) （61964001,12275049,62211530107）
河南省科技攻关项目(242102520013) （242102520013）
广东省自然科学基金(2025A1515012835) （2025A1515012835）
河南省重点研发项目(231111210400) （231111210400）
