Facile synthesis of PbTe nanoparticles and thin films in alkaline aqueous solution at room temperature |
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Authors: | Y.Y. Wang X. Yao |
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Affiliation: | Tongji University, Functional Materials Research Laboratory, 1239 Siping Road, Shanghai 200092, China |
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Abstract: | A novel, simple, and cost-effective route to PbTe nanoparticles and films is reported in this paper. The PbTe nanoparticles and films are fabricated by a chemical bath method, at room temperature and ambient pressure, using conventional chemicals as starting materials. The average grain size of the nanoparticles collected at the bottom of the bath is ∼25 nm. The film deposited on glass substrate is dense, smooth, and uniform with silver gray metallic luster. The film exhibits p-type conduction and has a moderate Seebeck coefficient value (∼147 μV K−1) and low electrical conductivity (∼0.017 S cm−1). The formation mechanism of the PbTe nanoparticles and films is proposed. |
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Keywords: | PbTe Film Nanoparticle Thermoelectric properties Chemical bath deposition |
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