Resonant enhancement of band-to-band tunneling in in-plane MoS2/WS2 heterojunctions

The band-to-band (BTB) tunneling current J through in-plane MoS2/WS2 heterojunctions is calculated by the nonequilibrium Green function method combined with tight-binding approximation. Types A and B of band configurations are considered. For type-A (type-B) heterojunctions, a potential notch exists...

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Published inJapanese Journal of Applied Physics Vol. 57; no. 4S
Main Authors Kuroda, Tatsuya, Mori, Nobuya
Format Journal Article
LanguageEnglish
Published The Japan Society of Applied Physics 01.04.2018
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Abstract The band-to-band (BTB) tunneling current J through in-plane MoS2/WS2 heterojunctions is calculated by the nonequilibrium Green function method combined with tight-binding approximation. Types A and B of band configurations are considered. For type-A (type-B) heterojunctions, a potential notch exists (or is absent) at the heterointerface. Both type-A and type-B MoS2/WS2 heterojunctions can support a higher BTB current than MoS2 and WS2 homojunctions. For type-A heterojunctions, the resonant enhancement of J occurs resulting in a significantly higher BTB tunneling current.
AbstractList The band-to-band (BTB) tunneling current J through in-plane MoS2/WS2 heterojunctions is calculated by the nonequilibrium Green function method combined with tight-binding approximation. Types A and B of band configurations are considered. For type-A (type-B) heterojunctions, a potential notch exists (or is absent) at the heterointerface. Both type-A and type-B MoS2/WS2 heterojunctions can support a higher BTB current than MoS2 and WS2 homojunctions. For type-A heterojunctions, the resonant enhancement of J occurs resulting in a significantly higher BTB tunneling current.
Author Mori, Nobuya
Kuroda, Tatsuya
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  organization: Osaka University Graduate School of Engineering, Suita, Osaka 565-0871, Japan
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  givenname: Nobuya
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  fullname: Mori, Nobuya
  organization: Osaka University Graduate School of Engineering, Suita, Osaka 565-0871, Japan
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Snippet The band-to-band (BTB) tunneling current J through in-plane MoS2/WS2 heterojunctions is calculated by the nonequilibrium Green function method combined with...
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Title Resonant enhancement of band-to-band tunneling in in-plane MoS2/WS2 heterojunctions
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