Enhanced thermoelectric properties of Pb1−xBixS prepared with hydrothermal synthesis and microwave sintering. Issue 7 (25th January 2017)

• Record Type: Journal Article
• Authors: Du, Xueli; Shi, Rongna; Guo, Ying; Wang, Yuelong; Ma, Yongchang; Yuan, Zhihao
• Is Part Of: Dalton transactions. Volume 46:Issue 7(2017)
• Page Start: 2129
• Page End: 2136
• Publication Date: 2017-01-25
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c6dt04177a
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : The thermoelectric figure of merit ZT values of microwave sintered Pb0.995 Bi0.005 S and Pb0.99 Bi0.01 S are 0.90 and 0.86 at 800 K, respectively. Abstract : As a cheap substitute for PbTe or PbSe, the thermoelectric performance of PbS still remains to be improved. In this report, we selected Bi2 S3 as a donor and employed a facile route of hydrothermal synthesis combined with microwave sintering to fabricate Bi2 S3 doped PbS. Due to the increased electrical conductivity by Bi2 S3 doping and the decreased thermal conductivity from the refined microstructure, the thermoelectric figure of merit ZT of microwave sintered Pb0.995 Bi0.005 S and Pb0.99 Bi0.01 S reached 0.90 and 0.86 at 800 K, respectively, without sign of saturation. When processed with plasma activated sintering (PAS), the highest ZT value of Pb0.99 Bi0.01 S only reached 0.3 at 800 K. The obtained results indicate that hydrothermal synthesis and microwave sintering can essentially improve the thermoelectric properties of Pb1− x Bi x S and easily realize mass production at low cost.