红外与毫米波学报2026，Vol.45Issue(3)：393-401,9.DOI:10.11972/j.issn.1001-9014.2026.03.006
锗基p-i-n结构阻挡杂质带红外探测器的温度影响机制
Temperature-dependent mechanism of Ge-Based p-i-n blocked im-purity band infrared detectors
摘要
Abstract
Blocked Impurity Band(BIB)detectors have significant application potential in fields such as infrared astro-nomical space observation.However,studies on their temperature-dependent mechanisms remain limited.In this work,a planar p-i-n structured BIB infrared detector based on high-purity germanium was fabricated using a near-sur-face processing technique.The device exhibited excellent electrical and photoresponse performance under cryogenic conditions.At 3.3 K,the reverse bias current was as low as 15 pA,and good response was maintained below 15 K.The blackbody detectivity reached up to 3.5×1012cm·Hz1/2·W-1,but decreased with increasing temperature.A current model incorporating photoexcitation,thermal excitation,and impact ionization processes was employed to simulate the experimental results.The analysis revealed that the primary mechanism for performance degradation at elevated temper-atures is the significant shrinkage of the depletion region,which reduces carrier collection efficiency.This study pro-vides both theoretical and experimental support for the structural design and performance optimization of BIB detectors for low-temperature infrared detection.关键词
凝聚态物理/BIB探测器/p-i-n结构/低温红外探测Key words
condensed matter physics/BIB detector/p-i-n structure/low temperature infrared detection分类
数理科学引用本文复制引用
陈天业,戴宁,刘赤县,王泽欣,胡清智,潘昌翊,凌静威,刘晓艳,朱家旗,邓惠勇..锗基p-i-n结构阻挡杂质带红外探测器的温度影响机制[J].红外与毫米波学报,2026,45(3):393-401,9.基金项目
国家重点研发计划(2023YFA1608701),国家自然科学基金(62274168,11933006和U2141240)和杭州创新团队项目(TD2020002)Supported by National Key R&D Program of China(2023YFA1608701),National Natural Science Foundation of China(62274168,11933006 and U2141240),and Hangzhou Leading Innovation and Entrepreneurship Team(TD2020002). （2023YFA1608701）
