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. 2015 Jun 1;5:10699. doi: 10.1038/srep10699

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(a) Raman spectra for SL-WS₂ on SiO₂ and h-BN/SL-WS₂/h-BN. (b) Lorentzian fitting for E_2g and 2LA(M) peaks. Red circles represent experimental data, while blue, black, and green lines represent E_2g, 2LA(M), and combined peak fitting, respectively. (c) Statistical distribution of the Raman intensity ratio (I_2LA(M)/I_A1g) for SL-WS₂ on SiO₂ substrate, h-BN/SL-WS₂/h-BN. The mean value of I_2LA(M)/I_A1g was 2.0 for SL-WS₂ on SiO₂ and 3.1 for h-BN/SL-WS₂/h-BN.