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Bi2S3 is a promising thermoelectric material due to its low thermal conductivity. However, the low electrical conductivity has become an obstacle for its higher thermoelectric properties. To overcome this, on the basis of 1 mol.% BiI3 doping, Bi2S3 polycrystalline samples doped with various silver (Ag) concentrations were successfully prepared by melting combined with spark plasma sintering (SPS)...
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