基于β辐射伏特效应的NPN结型换能结构研究  

The NPN Junction Energy Conversion Structure Research Based on Betavoltaic

作　　者：刘明忠[1] 熊平[1] 邓建伟 刘谋忠 徐守龙[1] 陈铀[1] 郭萍[1] 

机构地区：[1]南华大学核科学技术学院,湖南衡阳421001 [2]衡阳晶体管有限公司,湖南衡阳421000

出　　处：《南华大学学报（自然科学版）》2014年第2期79-83,共5页Journal of University of South China：Science and Technology

基　　金：湖南省自然科学省市联合基金重点项目资助课题(10JJ8005);湖南省环境保护厅科研基金资助项目(湘财建指[2010]277)

摘　　要：针对PN结型换能器件收集效率低,短路电流小等缺点,首次提出NPN结型核电池换能结构.用电子束对设计制作的NPN结型换能器件进行双面辐照实验,实验结果表明NPN结型换能结构能够通过降低P区掺杂浓度提高耗尽区宽度,减小换能器件厚度降低体电阻,增大短路电流,获得较大的能量转换效率.Because the nuclear microbattery based on silicon PN junction suffers from small short-circuit current and can not achieve high collection efficiency,this paper raises for the first time that silicon NPN junction as the energy conversion structure for nuclear battery is expected to achieve higher electrical power output. The double-sided of silicon NPN diode were irradiated by electron beam and the electrical capabilities are measured during the irradiation. The experiment results indicate that NPN junction can increase depletion region width by lightly doping of P region,and reducing the thickness of batter to achieve a small body resistance,which result in the short-circuit current and energy conversion performance improving.

关 键 词：β辐射伏特效应 换能结构 NPN结 

分 类 号：O47[理学—半导体物理]