While the band gap generally shows a decreasing trend with increased Se substitution as expected because of the larger size of the Se atom, the Cu 3 VSe 4 exhibits a higher band gap than expected [ 38 ].
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Intermediate Bandgap (IB) Cu<sub>3</sub>VS<sub>x</sub>Se<sub>4-x</sub> Nanocrystals as a New Class of Light Absorbing Semiconductors.
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