N-type Bi-doped SnSe Thermoelectric Nanomaterials Synthesized by a Facile Solution Method.An n-type Bi-doped SnSe was synthesized by a facile solution method followed by spark plasma sintering.  The Seebeck coefficient changed from positive to negative and presented n-type conducting behavior in the whole measured temperature range from 300 to 773 K, reaching a maximum absolute value of ∼900 μV K-1 at room temperature and ∼300 μV K-1 at 773 K. Considering the rich variety of metal 2-ethylhexanoates, higher thermoelectric performance is expected by different cationic doping in solution-synthesized nanomaterials.
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