Effects of anion and cation doping on the thermoelectric properties of n-type PbS. Issue 10 (August 2018)

• Record Type: Journal Article
• Authors: Du, Xueli; Wang, Yuelong; Shi, Rongna; Mao, Zhiyong; Yuan, Zhihao
• Is Part Of: Journal of the European Ceramic Society. Volume 38:Issue 10(2018)
• Page Start: 3512
• Page End: 3517
• Publication Date: 2018-08
• Subjects: Lead sulfide -- Hydrothermal synthesis -- Microwave sintering -- Cation and anion doping -- Thermoelectric property; Ceramic materials -- Periodicals; Composite materials -- Periodicals; Matériaux céramiques -- Périodiques; Composites -- Périodiques; Ceramic materials; Composite materials; Periodicals; Electronic journals; 666.05
• DOI: 10.1016/j.jeurceramsoc.2018.03.046
• Languages: English
• ISSNs: 0955-2219

Abstract

Abstract: The PbCl x S1- x and Pb1- x Bi x S ( x = 0–0.05) bulks were fabricated with a facile method of hydrothermal synthesis and microwave sintering, and the effect of anionic and cationic donors on the thermoelectric performance of PbS was investigated. Although Cl − and Bi 3+ both effectively improved the thermoelectric properties of n-type PbS, more excellent thermoelectric performance was obtained from Cl − doped samples because of higher electrical property and lower thermal conductivity at higher temperature ( T > 600 K). The thermoelectric figure of merit ( ZT ) reaches 1.04 for PbCl0.015 S0.985 at 800 K and increases with temperature increasing without sign of saturation, which is probably the highest value ever reported for single-phase polycrystalline n-type PbS. The results also indicate that the hydrothermal synthesis and microwave sintering can realize anion doping as well as cation doping for n-type PbS at low cost, and PbS should be a robust alternative for PbTe thermoelectric materials.