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- W2510192655 abstract "Tin Diselenide (SnSe 2 ) is a two-dimensional layered crystal commonly found in octahedral coordination (1T phase). It has been reported to have a high electron affinity of around 5.1 eV and a bandgap of 1 eV [1-2], which can form staggered band alignment with tungsten diselenide (WSe 2 ) in Thin-TFETs [3]. However, its lack of gate modulation remains a mystery [4]. In this work, we investigate the Fermi level tunability of SnSe 2 by counter doping using a polymer electrolyte, PEO:CsClO 4 . This counter doping technique increases the on/off ratio of SnSe 2 field effect transistor (FET) from 2 times to 50 times, a record high value. Meanwhile, a device model of SnSe 2 FET with ion doping and subgap density of states (DOS) has been proposed to fit the experimental data. The extracted effective number of acceptor-like subgap states is as high as 4.16 × 1019 cm−3 (in comparison with near 5 × 1017 cm−3 extracted for amorphous thin-film transistors [5]). This can explain the weak Fermi level tunability of SnSe 2 and direct future material development towards TFETs." @default.
- W2510192655 created "2016-09-16" @default.
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- W2510192655 date "2016-06-01" @default.
- W2510192655 modified "2023-10-06" @default.
- W2510192655 title "Fermi level tunability of a novel 2D crystal: Tin Diselenide (SnSe<inf>2</inf>)" @default.
- W2510192655 cites W2121198060 @default.
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- W2510192655 doi "https://doi.org/10.1109/drc.2016.7548473" @default.
- W2510192655 hasPublicationYear "2016" @default.
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