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. 2020 Nov 4;10:19003. doi: 10.1038/s41598-020-76036-y

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© The Author(s) 2020

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(a) Temperature-dependent indirect band gap of (a) bilayer and (b) multilayer PtSe₂ thin films. The thin solid lines indicate the results of the fitting using (a) the Bose–Einstein model and (b) the linear fit model.