Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance work on Tuesday 6th February 2018 from 11.00am to 11.15am (GMT).

During this time our website performance may be temporarily affected. If you have any questions please use the feedback button available under our menu button. We apologise for any inconvenience this might cause and thank you for your patience.


Issue 10, 2017
Previous Article Next Article

Optimization of thermoelectric properties of n-type Ti, Pb co-doped SnSe

Author affiliations

Abstract

n-Type polycrystalline SnSe with Ti, Pb co-doping was synthesized by combining mechanical alloying (MA) with spark plasma sintering (SPS). It is revealed that Ti is an effective cationic dopant to convert SnSe from a p-type to an n-type semiconductor, and the thermoelectric performance of the Ti-doped SnSe is also improved in comparison with the pristine sample due to an enhanced power factor. Furthermore, after further Pb doping, an obviously improved electrical conductivity together with a moderate Seebeck coefficient can be achieved, which results in an improvement of the power factor with a maximum value of 300 μW m−1 K−2 at 773 K. Meanwhile, the lattice thermal conductivity is significantly reduced because of the enhanced phonon scattering owing to the mass and strain fluctuations. Therefore, a final ZT value of 0.4 was obtained for composition of Sn0.74Pb0.20Ti0.06Se at 773 K, which is a conservative value for n-type SnSe with cationic dopant prepared by the simple preparation process of MA and SPS.

Graphical abstract: Optimization of thermoelectric properties of n-type Ti, Pb co-doped SnSe

Back to tab navigation

Publication details

The article was received on 26 Jul 2017, accepted on 22 Aug 2017 and first published on 23 Aug 2017


Article type: Research Article
DOI: 10.1039/C7QI00436B
Citation: Inorg. Chem. Front., 2017,4, 1721-1729
  •   Request permissions

    Optimization of thermoelectric properties of n-type Ti, Pb co-doped SnSe

    F. Li, W. Wang, X. Qiu, Z. Zheng, P. Fan, J. Luo and B. Li, Inorg. Chem. Front., 2017, 4, 1721
    DOI: 10.1039/C7QI00436B

Search articles by author

Spotlight

Advertisements