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Absorption coefficient (α) as a function of photon energy (hν) of glass/Sb2Se3 films prepared during the same synthesis process as the SLG/Mo/Sb2Se3 corresponding samples with 2[Se]/(2[Se] + 3[Sb]): 0.54, 0.53, 0.50, 0.48, and 0.36. The absorption coefficient obtained from the PDS spectra.
