TITLE

Large Seebeck coefficients and thermoelectric power factor of La-doped SrTiO3 thin films

AUTHOR(S)
Jalan, Bharat; Stemmer, Susanne
PUB. DATE
July 2010
SOURCE
Applied Physics Letters;7/26/2010, Vol. 97 Issue 4, p042106
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Seebeck coefficients and conductivity of La-doped SrTiO3 thin films grown by molecular beam epitaxy were measured as a function of carrier concentration. At low carrier concentrations, thin films show very high Seebeck coefficients (up to 980 μV K-1). The maximum thermoelectric power factor was 39 μWcm-1 K-2 at a carrier concentration of 7×1020 cm-3. La-delta-doped superlattices were also characterized and exhibited Seebeck coefficients of ∼500 μV K-1. The results are discussed in the context of reports of enhanced Seebeck coefficients in delta-doped SrTiO3 superlattices.
ACCESSION #
52616483

 

Related Articles

  • Cross-plane electronic and thermal transport properties of p-type La0.67Sr0.33MnO3/LaMnO3 perovskite oxide metal/semiconductor superlattices. Jha, Pankaj; Sands, Timothy D.; Cassels, Laura; Jackson, Philip; Favaloro, Tela; Kirk, Benjamin; Zide, Joshua; Xu, Xianfan; Shakouri, Ali // Journal of Applied Physics;Sep2012, Vol. 112 Issue 6, p063714 

    Lanthanum strontium manganate (La0.67Sr0.33MnO3, i.e., LSMO)/lanthanum manganate (LaMnO3, i.e., LMO) perovskite oxide metal/semiconductor superlattices were investigated as a potential p-type thermoelectric material. Growth was performed using pulsed laser deposition to achieve epitaxial LSMO...

  • Nanostructured CoSi Obtained by Spark Plasma Sintering. Longhin, Marco; Viennois, Romain; Ravot, Didier; Robin, Jean-Jacques; Villeroy, Benjamin; Vaney, Jean-Baptiste; Candolfi, Christophe; Lenoir, Bertrand; Papet, Philippe // Journal of Electronic Materials;Jun2015, Vol. 44 Issue 6, p1963 

    Cobalt monosilicide is a cheap, environmentally friendly thermoelectric material for medium temperatures (200â€'700°C). While its power factor is similar to the state-of-the-art thermoelectric materials, its thermal conductivity is too large to reach high ZT values....

  • Thin-film thermoelectric devices with high room-temperature figures of merit. Venkatasubramanian, Rama; Silvola, Edward; Colpitts, Thomas; O'Quinn, Brooks // Nature;10/11/2001, Vol. 413 Issue 6856, p597 

    Reports on thin-film thermoelectric materials that demonstrate a significant enhancement in ZT values. Potential ideality of superlattices in the Bi[sub 2]Te[sub 3] system; Variable-thickness ZT measurements; Anticipated heterostructure band diagram in short-period/shallow potential superlattices.

  • Enhanced thermoelectric performance in PbTe-based superlattice structures from reduction of lattice thermal conductivity. Caylor, J. C.; Coonley, K.; Stuart, J.; Colpitts, T.; Venkatasubramanian, R. // Applied Physics Letters;7/11/2005, Vol. 87 Issue 2, p023105 

    We have fabricated two-dimensional n-type PbTe/PbTe0.75Se0.25 structures using an evaporation process. In optimized films exhibiting a high-quality superlattice structure, a significant reduction in lattice thermal conductivity has been experimentally measured. The reduction would indicate...

  • Thermoelectric properties of Ca3Co4O9 and Ca2.8Bi0.2Co4O9 thin films in their island formation mode. Jood, Priyanka; Peleckis, Germanas; Wang, Xiaolin; Dou, Shi Xue // Journal of Materials Research;Jul2013, Vol. 28 Issue 14, p1932 

    Ca3Co4O9 and Ca2.8Bi0.2Co4O9 thin films were fabricated on LaAlO3 (LAO) substrate using pulsed laser deposition technique and were studied for their thermoelectric (TE) properties in Stranski–Krastanov mode for the first time. The thin films consisted of 3D clusters/islands on a...

  • Platform for in-plane ZT measurement and Hall coefficient determination of thin films in a temperature range from 120 K up to 450 K. Linseis, Vincent; Völklein, Friedemann; Reith, Heiko; Woias, Peter; Nielsch, Kornelius // Journal of Materials Research;Oct2016, Vol. 31 Issue 20, p3196 

    The characterization of nanostructured samples with at least one restricted dimension like thin films or nanowires is challenging but important to understand their structure and transport mechanism and to improve current industrial products and production processes. We report on the development...

  • Evaluation of the Thermoelectric Module Consisting of W-Doped Heusler FeVAl Alloy. Mikami, M.; Mizoshiri, M.; Ozaki, K.; Takazawa, H.; Yamamoto, A.; Terazawa, Y.; Takeuchi, T. // Journal of Electronic Materials;Jun2014, Vol. 43 Issue 6, p1922 

    Power generation performance of a thermoelectric module consisting of the Heusler FeVAl alloy was evaluated. For construction of the module, W-doped FeVAl alloys were prepared using powder metallurgy process. Power generation tests of the module consisting of 18 pairs of p- n junctions were...

  • Assessment of the thermoelectric performance of polycrystalline p-type SnSe. Sassi, S.; Candolfi, C.; Vaney, J. -B.; Ohorodniichuk, V.; Masschelein, P.; Dauscher, A.; Lenoir, B. // Applied Physics Letters;5/26/2014, Vol. 104 Issue 21, p1 

    We report the evaluation of the thermoelectric performance of polycrystalline p-type SnSe, a material in which unprecedented values of the thermoelectric figure of merit ZT have been recently discovered in single crystals. Besides anisotropic transport properties, our results confirm that this...

  • Reduced Grain Size and Improved Thermoelectric Properties of Melt Spun (Hf,Zr)NiSn Half-Heusler Alloys. Cui Yu; Tie-Jun Zhu; Kai Xiao; Jun-Jie Shen; Sheng-Hui Yang; Xin-Bing Zhao // Journal of Electronic Materials;Sep2010, Vol. 39 Issue 9, p2008 

    Half-Heusler thermoelectric materials Hf(/Zr)NiSn were prepared by levitation melting followed by melt-spinning to refine the boundary structures, and then they were consolidated by spark plasma sintering. X-ray diffraction analysis and scanning electron microscopy showed that single phased...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics