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Multilayer WS2 for low-power visible and near-infrared phototransistors.
Pelella, Aniello; Intonti, Kimberly; Durante, Ofelia; Kumar, Arun; Viscardi, Loredana; De Stefano, Sebastiano; Romano, Paola; Giubileo, Filippo; Neill, Hazel; Patil, Vilas; Ansari, Lida; Roycroft, Brendan; Hurley, Paul K; Gity, Farzan; Di Bartolomeo, Antonio.
Affiliation
  • Pelella A; Department of Science and Technology, University of Sannio, Via De Sanctis 59/A, 82100, Benevento, Italy.
  • Intonti K; Department of Physics "E. R. Caianiello", University of Salerno, Via Giovanni Paolo II, 84084, Fisciano, Salerno, Italy.
  • Durante O; CNR-SPIN Salerno, Via Giovanni Paolo II, 84084, Fisciano, Italy.
  • Kumar A; Department of Physics "E. R. Caianiello", University of Salerno, Via Giovanni Paolo II, 84084, Fisciano, Salerno, Italy.
  • Viscardi L; Department of Physics "E. R. Caianiello", University of Salerno, Via Giovanni Paolo II, 84084, Fisciano, Salerno, Italy.
  • De Stefano S; Department of Physics "E. R. Caianiello", University of Salerno, Via Giovanni Paolo II, 84084, Fisciano, Salerno, Italy.
  • Romano P; CNR-SPIN Salerno, Via Giovanni Paolo II, 84084, Fisciano, Italy.
  • Giubileo F; Department of Physics "E. R. Caianiello", University of Salerno, Via Giovanni Paolo II, 84084, Fisciano, Salerno, Italy.
  • Neill H; Department of Science and Technology, University of Sannio, Via De Sanctis 59/A, 82100, Benevento, Italy.
  • Patil V; CNR-SPIN Salerno, Via Giovanni Paolo II, 84084, Fisciano, Italy.
  • Ansari L; CNR-SPIN Salerno, Via Giovanni Paolo II, 84084, Fisciano, Italy.
  • Roycroft B; Tyndall National Institute, University College Cork, Lee Maltings, Dyke Parade, Cork, T12 R5CP, Ireland.
  • Hurley PK; Tyndall National Institute, University College Cork, Lee Maltings, Dyke Parade, Cork, T12 R5CP, Ireland.
  • Gity F; Tyndall National Institute, University College Cork, Lee Maltings, Dyke Parade, Cork, T12 R5CP, Ireland.
  • Di Bartolomeo A; Tyndall National Institute, University College Cork, Lee Maltings, Dyke Parade, Cork, T12 R5CP, Ireland.
Discov Nano ; 19(1): 57, 2024 Mar 25.
Article in En | MEDLINE | ID: mdl-38528187
ABSTRACT
Mechanically exfoliated multilayer WS2 flakes are used as the channel of field effect transistors for low-power photodetection in the visible and near-infrared (NIR) spectral range. The electrical characterization as a function of the temperature reveals devices with n-type conduction and slightly different Schottky barriers at the drain and source contacts. The WS2 phototransistors can be operated in self-powered mode, yielding both a current and a voltage when exposed to light. The spectral photoresponse in the visible and the NIR ranges shows a high responsivity (4.5 µA/W) around 1250 nm, making the devices promising for telecommunication applications.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Discov Nano Year: 2024 Document type: Article Affiliation country: Italy
Fulltext
Add to My VHL
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XML
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Discov Nano Year: 2024 Document type: Article Affiliation country: Italy