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A spectrally selective visible microbolometer based on planar subwavelength thin films.


ABSTRACT: In this work, we experimentally demonstrate a new type of compact, low-cost, visible microbolometer based on metal-insulator-metal (MIM) planar subwavelength thin films, which exploits resonant absorption for spectral selectivity without additional filters and has the advantages of compact design, simple structure, cost-efficiency, and large format fabrication. The experimental results show that a proof-of-principle microbolometer exhibits spectrally selective properties in the visible frequency range. At a resonant absorption wavelength of 638 nm, a responsivity of about 10 mV W-1 is achieved at room temperature at a bias current of 0.2 mA, which is about one order of magnitude higher than that of the control device (a bare Au bolometer). Our proposed approach provides a viable solution for the development of compact and inexpensive detectors.

SUBMITTER: Xu Q 

PROVIDER: S-EPMC10044596 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature

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A spectrally selective visible microbolometer based on planar subwavelength thin films.

Xu Qianqian Q   Zhou Ziji Z   Tan Chong C   Pan Xiaohang X   Wen Zhengji Z   Zhang Jinguo J   Zhou Dongjie D   Sun Yan Y   Chen Xin X   Zhou Lei L   Dai Ning N   Chu Junhao J   Hao Jiaming J  

Nanoscale advances 20230223 7


In this work, we experimentally demonstrate a new type of compact, low-cost, visible microbolometer based on metal-insulator-metal (MIM) planar subwavelength thin films, which exploits resonant absorption for spectral selectivity without additional filters and has the advantages of compact design, simple structure, cost-efficiency, and large format fabrication. The experimental results show that a proof-of-principle microbolometer exhibits spectrally selective properties in the visible frequency  ...[more]

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