Thermoelectric transport properties of n-type tin sulfide. (September 2019)

• Record Type: Journal Article
• Authors: Hu, Xuegao; He, Wenke; Wang, Dongyang; Yuan, Bifei; Huang, Zhiwei; Zhao, Li-Dong
• Is Part Of: Scripta materialia. Number 170(2019)
• Page Start: 99
• Page End: 105
• Publication Date: 2019-09
• Subjects: Thermoelectric -- n-Type SnS -- Layered structures -- Electrical transport properties -- Thermal conductivity; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2019.05.043
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: In this paper, n -type polycrystalline tin sulfide (SnS) was firstly synthesized through optimizing Br doping. Comparably, n -type crystalline SnS with optimized Br doping was prepared, which exhibits better thermoelectric performance than that in polycrystalline SnS over a wide temperature range due to higher carrier mobility. A maximum average dimensionless figure of merit ( ZT ) ~0.08 at 300–823 K was achieved in n -type SnS crystals, which is 2 times higher than that in polycrystalline SnS. This work provides an effective strategy to enhance performance of earth-abundant and low-cost n -type SnS through electron-doping, higher performance can be expected in crystalline form. Graphical abstract: N -type SnS crystals with layered structure exhibits higher thermoelectric performance than that in SnS polycrystals due to higher carrier mobility. A maximum ZT ~0.12 at 823 K and an average ZT ave ~0.08 at 300–823 K were achieved in n -type SnS crystals.Unlabelled Image