Carbon Nanotube Based Schottky Diodes as Uncooled Terahertz Radiation Detectors

被引：12

作者：

Fedorov, Georgy ^{[1
]}

Gayduchenko, Igor ^{[2
]}

Titova, Nadezhda ^{[2
]}

Gazaliev, Arsen ^{[2
]}

Moskotin, Maxim ^{[2
]}

Kaurova, Natalia ^{[2
]}

Voronov, Boris ^{[2
]}

Goltsman, Gregory ^{[2
,3
]}

机构：

[1] State Univ, Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Russia

[2] Moscow State Pedag Univ, Dept Phys, Moscow 119991, Russia

[3] Natl Res Univ Higher Sch Econ, Moscow Inst Elect & Math, Moscow 109028, Russia

来源：

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2018年 / 255卷 / 01期

基金：

俄罗斯科学基金会; 俄罗斯基础研究基金会;

关键词：

carbon nanotubes; Schottky diodes; terahertz radiation detectors;

D O I：

10.1002/pssb.201700227

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Despite the intensive development of the terahertz technologies in the last decade, there is still a shortage of efficient room-temperature radiation detectors. Carbon nanotubes (CNTs) are considered as a very promising material possessing many of the features peculiar for graphene (suppression of backscattering, high mobility, etc.) combined with a bandgap in the carrier spectrum. In this paper, we investigate the possibility to incorporate individual CNTs into devices that are similar to Schottky diodes. The latter is currently used to detect radiation with a frequency up to 50 GHz. We report results obtained with semiconducting (bandgap of about 0.5 eV) and quasi-metallic (bandgap of few meV) single-walled carbon nanotubes (SWNTs). Semiconducting CNTs show better performance up to 300 GHz with responsivity up to 100 VW-1, while quasi-metallic CNTs are shown to operate up to 2.5 THz.

引用

页数：6

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