Functionally Graded (PbTe)1-x(SnTe)x Thermoelectrics

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Functionally Graded (PbTe)1-x(SnTe)x Thermoelectrics. / Hedegaard, Ellen M.J.; Mamakhel, Aref A.H.; Reardon, Hazel; Iversen, B. B.

In: Chemistry of Materials, Vol. 30, No. 1, 2018, p. 280-287.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

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Hedegaard, Ellen M.J. et al. "Functionally Graded (PbTe)1-x(SnTe)x Thermoelectrics". Chemistry of Materials. 2018, 30(1). 280-287. https://doi.org/10.1021/acs.chemmater.7b04473

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Hedegaard, Ellen M.J. ; Mamakhel, Aref A.H. ; Reardon, Hazel ; Iversen, B. B. / Functionally Graded (PbTe)1-x(SnTe)x Thermoelectrics. In: Chemistry of Materials. 2018 ; Vol. 30, No. 1. pp. 280-287.

Bibtex

@article{3d0587bac61544bea9d4f718ed1b3c4e,
title = "Functionally Graded (PbTe)1-x(SnTe)x Thermoelectrics",
abstract = "Functionally graded (PbTe)1-x(SnTe)x ingots have been prepared by Bridgman crystal growth method for the first time. From SEM-EDX, the composition (x) of the ingot was found to increase smoothly from 10.6 to 25.4 along the direction of the growth. The gradual change in composition is shown to cause a decrease in band gap as crystallization proceeds, and to be accompanied by a change in carrier concentration. By a Potential Seebeck Microprobe (PSM), a smoothly varying Seebeck coefficient was measured along the growth direction of the sample at room temperature. High temperature properties relevant for thermoelectric performance were measured and used to evaluate the potential of this system as a functionally graded high temperature thermoelectric material. This study provides insight into understanding the complicated interplays of advanced crystal growth and physical properties, going beyond standard thermoelectric sample preparation approaches.",
author = "Hedegaard, {Ellen M.J.} and Mamakhel, {Aref A.H.} and Hazel Reardon and Iversen, {B. B.}",
year = "2018",
doi = "10.1021/acs.chemmater.7b04473",
language = "English",
volume = "30",
pages = "280--287",
journal = "Chemistry of Materials",
issn = "0897-4756",
publisher = "AMER CHEMICAL SOC",
number = "1",

}

RIS

TY - JOUR

T1 - Functionally Graded (PbTe)1-x(SnTe)x Thermoelectrics

AU - Hedegaard, Ellen M.J.

AU - Mamakhel, Aref A.H.

AU - Reardon, Hazel

AU - Iversen, B. B.

PY - 2018

Y1 - 2018

N2 - Functionally graded (PbTe)1-x(SnTe)x ingots have been prepared by Bridgman crystal growth method for the first time. From SEM-EDX, the composition (x) of the ingot was found to increase smoothly from 10.6 to 25.4 along the direction of the growth. The gradual change in composition is shown to cause a decrease in band gap as crystallization proceeds, and to be accompanied by a change in carrier concentration. By a Potential Seebeck Microprobe (PSM), a smoothly varying Seebeck coefficient was measured along the growth direction of the sample at room temperature. High temperature properties relevant for thermoelectric performance were measured and used to evaluate the potential of this system as a functionally graded high temperature thermoelectric material. This study provides insight into understanding the complicated interplays of advanced crystal growth and physical properties, going beyond standard thermoelectric sample preparation approaches.

AB - Functionally graded (PbTe)1-x(SnTe)x ingots have been prepared by Bridgman crystal growth method for the first time. From SEM-EDX, the composition (x) of the ingot was found to increase smoothly from 10.6 to 25.4 along the direction of the growth. The gradual change in composition is shown to cause a decrease in band gap as crystallization proceeds, and to be accompanied by a change in carrier concentration. By a Potential Seebeck Microprobe (PSM), a smoothly varying Seebeck coefficient was measured along the growth direction of the sample at room temperature. High temperature properties relevant for thermoelectric performance were measured and used to evaluate the potential of this system as a functionally graded high temperature thermoelectric material. This study provides insight into understanding the complicated interplays of advanced crystal growth and physical properties, going beyond standard thermoelectric sample preparation approaches.

UR - http://www.scopus.com/inward/record.url?scp=85038558607&partnerID=8YFLogxK

U2 - 10.1021/acs.chemmater.7b04473

DO - 10.1021/acs.chemmater.7b04473

M3 - Journal article

VL - 30

SP - 280

EP - 287

JO - Chemistry of Materials

JF - Chemistry of Materials

SN - 0897-4756

IS - 1

ER -