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23 April 2020 First-principles calculation of electronic structure of turbostratic graphene for high-responsivity infrared detection with enhanced photogating
Satoshi Okuda, Masaaki Shimatani, Shoichiro Fukushima, Shinpei Ogawa, Takashi Ikuta, Kenzo Maehashi
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Proceedings Volume 11407, Infrared Technology and Applications XLVI; 114071J (2020) https://doi.org/10.1117/12.2558377
Event: SPIE Defense + Commercial Sensing, 2020, Online Only
Abstract
Disorderly stacked multilayer graphene, called turbostratic graphene, is a promising candidate for highly responsive infrared detectors due to its higher carrier mobility than well-ordered multilayer graphene, and facility to suppress the Coulomb scattering from the substrate. Such properties are expected to enhance photogating for high-responsivity infrared detection. The electronic structure of turbostratic graphene was investigated using first-principles calculations. The turbostratic graphene was modeled by introducing disorder to bilayer graphene in terms of the distance and the rotation angle between the graphene layers. The calculation results show that an increase in these parameters leads to linear band dispersion and a structure similar to monolayer graphene.
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Satoshi Okuda, Masaaki Shimatani, Shoichiro Fukushima, Shinpei Ogawa, Takashi Ikuta, and Kenzo Maehashi "First-principles calculation of electronic structure of turbostratic graphene for high-responsivity infrared detection with enhanced photogating", Proc. SPIE 11407, Infrared Technology and Applications XLVI, 114071J (23 April 2020); https://doi.org/10.1117/12.2558377
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KEYWORDS
Graphene
Infrared detection
Photodetectors
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