Coexistence of Negative and Positive Photoconductivity in Few‐Layer PtSe2 Field‐Effect Transistors

• Published in: Advanced functional materials Vol. 31; no. 43
• Main Authors: Grillo, Alessandro, Faella, Enver, Pelella, Aniello, Giubileo, Filippo, Ansari, Lida, Gity, Farzan, Hurley, Paul K., McEvoy, Niall, Di Bartolomeo, Antonio
• Format: Journal Article
• Language: English
• Published: Hoboken Wiley Subscription Services, Inc 01.10.2021
• Subjects: Carrier density; Charge transfer; Density functional theory; Electrical resistivity; field‐effect transistors; High vacuum; Light irradiation; Light sources; Materials science; negative photoconductivity; Optical properties; Oxygen; oxygen adsorption; Photoconductivity; pressure; PtSe 2; Semiconductor devices; Transistors; White light

Platinum diselenide (PtSe2) field‐effect transistors with ultrathin channel regions exhibit p‐type electrical conductivity that is sensitive to temperature and environmental pressure. Exposure to a supercontinuum white light source reveals that positive and negative photoconductivity coexists in the...