基于碲纳米线光热电效应的室温高灵敏太赫兹探测器OA
Room-temperature highly sensitive terahertz detector based on the photothermoelectric effect of Te nanowires
高灵敏度的室温探测器,是推动太赫兹技术广泛应用的核心器件.本文研制了一种基于光热电效应的室温太赫兹探测器,采用碲(Te)纳米线作为沟道材料,通过倾角蒸镀技术,制备出长度为百纳米以下的探测沟道,并利用非对称金属掺杂,使Te纳米线两端具有非对称热电特性.实验结果表明,该型器件在0.288 THz光照下,平均响应度达54.63 V/W,噪声等效功率为33.5 pW/Hz1/2,响应时间为71.1 μs,实现了室温下的高灵敏、快速太赫兹探测.
Highly sensitive detectors operating at room temperature are the core devices urgently needed to realize the wide application of terahertz technology.In this paper,a room-temperature terahertz detector based on the photothermoelectric effect is developed.Using tellurium(Te)nanowires as the channel material,and tilted-angle evaporation method is employed to fabricate the channel with a length of less than one hundred nanometers,and the Te nanowires are doped by asymmetric metal to give asymmetric thermoelectric properties at both ends.Experimental results demonstrate that the device can achieve a responsivity of 54.63 V/W under 0.288 THz illumination,with a Noise Equivalent Power(NEP)of 33.5 pW/Hz1/2,and a response time of 71.1 μs,which realizes a highly sensitive and rapid terahertz detection under room temperature conditions.
白净;李思佳;陈猛;郑照强;曹阳;王迎新
北京信息科技大学 仪器科学与光电工程学院,北京 100192清华大学 工程物理系,北京 100084危爆物品探测技术国家工程研究中心,北京 100084广东工业大学 材料与能源学院,广东 广州 510006北京信息科技大学 仪器科学与光电工程学院,北京 100192清华大学 工程物理系,北京 100084
信息技术与安全科学
倾角蒸镀碲纳米线太赫兹探测器光热电效应
tilted-angle evaporationtellurium nanowireterahertz detectorsphotothermoelectric effect
《太赫兹科学与电子信息学报》 2026 (5)
587-594,8
国家自然科学基金青年项目资助(62105178)国家自然科学基金面上项目资助(62375149)
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