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Proceedings Paper

Three dimensional Dirac semimetal thin film heterojunction photodetector: organics on Cd3As2
Author(s): Ming Yang; Jun Wang; Weizhi Li; Yadong Jiang
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Paper Abstract

Photodetector that use three dimensional (3D) Dirac Semimetal have received considerable attention because Dirac Semimetal is regarded as an ideal candidate electrode material. In this work, organics is steamed by heat on Cd3As2 thin film is used in the field of photoelectric detection. Surprisingly, the photodetector shows excellent photo response properties from 405 nm to 1550 nm. The device exhibiting high photocurrent responsivity (407 mA/W) and external quantum efficiency (58.7 %) at the wavelength of 808 nm, which Ri is more than six times than pure Cd3As2 thin film devices. Most interestingly, the NIR photocurrent responsivity of this device can reach 53.1 mA/W. Overall, the broadband photodetector based on using organics and 3D Cd3As2 Dirac semimetal thin film heterojunction is proved to better performance for photoelectric application. Moreover, organics/Cd3As2 thin film heterojunction also has advantage in low cost array devices. The use of Cd3As2 thin film and organics opens up a new path for the practical application of Dirac Semimetal materials.

Paper Details

Date Published: 18 December 2019
PDF: 6 pages
Proc. SPIE 11334, AOPC 2019: Optoelectronic Devices and Integration; and Terahertz Technology and Applications, 113340C (18 December 2019); doi: 10.1117/12.2542104
Show Author Affiliations
Ming Yang, Univ. of Electronic Science and Technology of China (China)
Jun Wang, Univ. of Electronic Science and Technology of China (China)
Weizhi Li, Univ. of Electronic Science and Technology of China (China)
Yadong Jiang, Univ. of Electronic Science and Technology of China (China)


Published in SPIE Proceedings Vol. 11334:
AOPC 2019: Optoelectronic Devices and Integration; and Terahertz Technology and Applications
Zhiping Zhou; Xiao-Cong Yuan; Daoxin Dai, Editor(s)

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