一种可吸收垂直入射光的管状量子阱红外探测器
投稿时间:2016-09-27  修订日期:2016-10-18  点此下载全文
引用本文:王晗,李世龙,甄红楼,李梦瑶,聂晓飞,黄高山,梅永丰,陆卫.一种可吸收垂直入射光的管状量子阱红外探测器[J].红外与毫米波学报,2017,36(2):191~195].WANG Han,LI Shi-long,ZHEN Hong-lou,LI Meng-yao,NIE Xiao-fei,HUANG Gao-shan,MEI Yong-feng,LU Wei.A tubular quantum well infrared photodetector under vertically-incident light coupling[J].J.Infrared Millim.Waves,2017,36(2):191~195.]
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作者单位E-mail
王晗 中国科学院上海技术物理研究所 红外物理国家重点实验室 hwang@mail.sitp.ac.cn 
李世龙 中国科学院上海技术物理研究所 shilong@mail.sitp.ac.cn 
甄红楼 中国科学院上海技术物理研究所 zhenhl@mail.sitp.ac.cn 
李梦瑶 中国科学院上海技术物理研究所 myli@mail.sitp.ac.cn 
聂晓飞 中国科学院上海技术物理研究所 nxfwlx@sitp.ac.cn 
黄高山 复旦大学 gshuang@fudan.edu.cn 
梅永丰 复旦大学 yfm@fudan.edu.cn 
陆卫 中国科学院上海技术物理研究所 luwei@mail.sitp.ac.cn 
基金项目:国家自然科学基金(51322201, 61575213), 上海市科学技术委员会(14JC1400200)
中文摘要:基于传统的光刻和化学湿法腐蚀工艺,通过卷曲技术,提出一种三维管状量子阱红外探测器。该管状器件相比于未卷曲的平面器件,在垂直入射光照下,展现了优良的暗电流、黑体响应和光电流响应率特性曲线。当工作温度60 K,偏置电压0.45 V时,管状器件峰值响应率为20.6 mA/W,峰值波长3.62 μm,最大量子效率2.3%。从几何光学的角度分析了管状器件的垂直光吸收原理,进而揭示了一种特殊的光耦合方式。最后,进一步测试了不同角度入射光照射下的光电流响应率谱。由于微管的近似圆形对称性,器件具有很宽的视角,有助于红外探测系统的设计。
中文关键词:卷曲微管  红外探测器  量子阱  光耦合
 
A tubular quantum well infrared photodetector under vertically-incident light coupling
Abstract:A three-dimensional tubular quantum well infrared photodetector (QWIP) was demonstrated via rolled-up technology, which was on the basis of conventional lithography and wet chemical etching. When the tubular QWIPs and the corresponding planar devices were illuminated by the vertically-incident light, their dark current, blackbody response, and photocurrent responsivity spectra were characterized. Under the operating temperature of 60 K and the bias of 0.45 V, a peak responsivity of 20.6 mA/W and a peak quantum efficiency of 2.3% at the peak response wavelength of 3.62 μm were obtained in the tubular devices. By clarifying the principle of optical absorption, the tubular QWIP presents a novel optical coupling manner. The device photocurrent responsivity spectra for the external light were further studied at different incident angles. It is shown, that as the approximate circular symmetry of the microtubes, the tubular devices have a wide perspective, which is advantageous to the design of infrared detection system.
keywords:rolled-up microtube, infrared photodetector, quantum well, optical coupling
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