English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Thermal Stability and Tuning of Thermoelectric Properties of Ag1-xSb1+xTe2+x (0 <= x <= 0.4) Alloys

Wyzga, P., Veremchuk, I., Burkhardt, U., Simon, P., Grin, Y., & Wojciechowski, K. T. (2018). Thermal Stability and Tuning of Thermoelectric Properties of Ag1-xSb1+xTe2+x (0 <= x <= 0.4) Alloys. Applied Sciences, 8(1): 52, pp. 1-18. doi:10.3390/app8010052.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/21.11116/0000-0000-B7DC-A Version Permalink: http://hdl.handle.net/21.11116/0000-0001-2621-F
Genre: Journal Article

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Wyzga, Pawel1, Author              
Veremchuk, Igor2, Author              
Burkhardt, Ulrich3, Author              
Simon, Paul4, Author              
Grin, Yuri5, Author              
Wojciechowski, Krzysztof T.6, Author
Affiliations:
1Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863405              
2Igor Veremchuk, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863411              
3Ulrich Burkhardt, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863422              
4Paul Simon, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863418              
5Juri Grin, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863413              
6External Organizations, ou_persistent22              

Content

show
hide
Free keywords: -
 Abstract: Introduction of nonstoichiometry to AgSbTe2-based materials is considered to be an effective way to tune thermoelectric properties similarly to extrinsic doping. To prove this postulate, a systematic physicochemical study of the Ag1-xSb1+xTe2+x alloys (0 <= x <= 0.4) was performed. In order to investigate the influence of the cooling rate after synthesis on phase composition and thermoelectric performance, slowly cooled and quenched Ag1-xSb1+xTe2+x alloys (x = 0; 0.1; 0.17; 0.19; 0.3; 0.4) were prepared. Single-phase material composed of the beta phase (NaCl structure type) was obtained for the quenched x = 0.19 sample only. The other alloys must be regarded as multi-phase materials. The cooling rate affects the formation of the phases in the Ag-Sb-Te system and influences mainly electronic properties, carrier mobility and carrier concentration. The extremely low lattice thermal conductivity is an effect of the mosaic nanostructure. The maximal value of the figure of merit ZT(max) = 1.2 is observed at 610 K for the slowly cooled multi-phase sample Ag0.9Sb1.1Te2.1. Thermoelectric properties are repeatedly reproducible up to 490 K.

Details

show
hide
Language(s): eng - English
 Dates: 2018-01-042018-01-04
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.3390/app8010052
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Applied Sciences
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Basel, Schweiz : MDPI
Pages: - Volume / Issue: 8 (1) Sequence Number: 52 Start / End Page: 1 - 18 Identifier: Other: 2076-3417
CoNE: /journals/resource/2076-3417