2D Material-Enabled Nanomechanical Bolometer

被引：13

作者：

Chiang, Shu-Yuan ^{[1
]}

Li, Yueh-Yuan ^{[1
]}

Shen, Tien-Lin ^{[1
]}

Hofmann, Mario ^{[1
]}

Chen, Yang-Fang ^{[1
]}

机构：

[1] Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan

来源：

NANO LETTERS | 2020年 / 20卷 / 04期

关键词：

bolometer; graphene; MoS2; infrared detectors; thermal expansion; GRAPHENE; FILMS; MICROBOLOMETER; SENSITIVITY;

D O I：

10.1021/acs.nanolett.9b04693

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We here describe a novel type of long-wavelength radiation detector that measures illumination intensity at room temperature through mechanical transduction. Compared to semiconductor-based bolometers, our nanomechanical detector exhibits low measurement noise and is inherently transparent and flexible. The presented solid-state device is based on a 2D-material film that acts as radiation absorber and detector of mechanical strain at the substrate-absorber interface. Optimization of the 2D material properties and realization of a novel edge-on device geometry combines unprecedented detectivity of 3.34 X 10(8) cm Hz(1/)(2) W-1 with micrometer-scale spatial resolution. The observed combination of superior performance with the facile and scalable fabrication using only liquid processes shows the potential of the presented detector for future ubiquitous and wearable electronics.

引用

页码：2326 / 2331

页数：6

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