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Metal thermopile in...
Metal thermopile infrared detector with vertical graphene
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- Li, Kai (författare)
- Beijing University of Technology
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- Sun, Jie, 1977 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology,Fuzhou University
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- Du, Zaifa (författare)
- Beijing University of Technology
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- Qian, Fengsong (författare)
- Beijing University of Technology
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- Tang, Peng Hao (författare)
- Beijing University of Technology
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- Mei, Yu (författare)
- Beijing University of Technology
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- Xu, Chen (författare)
- Beijing University of Technology
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- Yan, Qun (författare)
- Fuzhou University
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- Liu, Ming (författare)
- Beijing University of Technology
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- Li, Long Fei (författare)
- Beijing University of Technology
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- Guo, Wei Ling (författare)
- Beijing University of Technology
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(creator_code:org_t)
- Acta Physica Sinica, Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences, 2023
- 2023
- Kinesiska.
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Ingår i: Wuli Xuebao/Acta Physica Sinica. - : Acta Physica Sinica, Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences. - 1000-3290. ; 72:3
- Relaterad länk:
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https://research.cha...
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https://doi.org/10.7...
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Abstract
Ämnesord
Stäng
- Thermopile infrared detector is a kind of detector device mainly composed of thermocouple as the basic unit. Because of its simple principle, no need of cooling equipment, and other advantages, it has been widely used in various fields of production and life. However, the absorption rates of the materials in conventional thermopile devices are poor, and the majority of them are incompatible with microfabrication methods. In this work, a metal thermopile infrared detector with vertical graphene (VG) is designed and fabricated. The VG is grown via plasma enhanced chemical vapor deposition, and retained at the device’s thermal ends to provide the thermopile IR detector’s wideband and high response characteristics. The detector achieves a room temperature responsivity reaching a value as high as 1.53 V/W at 792 nm, which can increase the response results about 28 times and reduce the response time to 0.8 ms compared with the thermopile detector without VG. After systematically measuring the response results, it is finally found that there are three main mechanisms responsible for the response on the composite device. The first one is the response generated by the metal thermopile itself alone. The second one is the response increased eventually by the contribution of VG covered at the metal thermal junction that expands the temperature difference. The last one is the response generated by the temperature gradient existing inside the VG on the surface of the device after the absorption of heat. The portion of each partial response mechanism in the total response is also analyzed, providing a new reference direction for analyzing the response generation mechanism of thermopile detectors with other absorbing materials. The process is compatible with the microfabrication, while the device performance is enhanced and suitable for mass production. Furthermore, by utilizing the surface plasmon resonance to combine VG with metal nanoparticles, the material’ s light absorption is found to be enhanced significantly under the same conditions, and the resulting thermal voltage can be increased to 6 times. The results indicate that VG promises to possess practical applications, in many fields such as photoelectric sensing and power production devices. This technology provides a new method to manufacture high-performance thermopile infrared detectors and other sensor devices.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Textil-, gummi- och polymermaterial (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Textile, Rubber and Polymeric Materials (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- vertical graphene
- surface plasmon resonance
- infrared detectors
- thermopiles
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Till lärosätets databas
- Av författaren/redakt...
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Li, Kai
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Sun, Jie, 1977
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Du, Zaifa
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Qian, Fengsong
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Tang, Peng Hao
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Mei, Yu
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visa fler...
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Xu, Chen
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Yan, Qun
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Liu, Ming
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Li, Long Fei
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Guo, Wei Ling
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visa färre...
- Om ämnet
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- TEKNIK OCH TEKNOLOGIER
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TEKNIK OCH TEKNO ...
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och Materialteknik
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och Textil gummi och ...
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- TEKNIK OCH TEKNOLOGIER
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TEKNIK OCH TEKNO ...
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och Elektroteknik oc ...
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och Annan elektrotek ...
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- NATURVETENSKAP
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NATURVETENSKAP
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och Fysik
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och Den kondenserade ...
- Artiklar i publikationen
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Wuli Xuebao/Acta ...
- Av lärosätet
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Chalmers tekniska högskola