Experiments with semiconducting p-type misfit compound

Hanna Heinonen; Jyrki Tervo

doi:10.1063/1.4731569

Experiments with semiconducting p-type misfit compound

BA1408 Flexible sensors and devices

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

Abstract

Ca₃Co₄O₉ is a p-type semiconductor and a promising thermoelectric material with misfit layer structure. Cobalt-based layered structure materials have been studied as thermoelectric material candidates because of their nontoxicity, light weight, high thermal and chemical stability and oxidation resistance at high temperature. The operating area of Ca₃Co₄O₉ in thermoelectric applications is roughly from 800K to 1000K. Ca₃Co₄O₉ powders were synthetized by a sol-gel method which enables fabrication of high purity and homogeneous particles. Calcium and cobalt nitrate hydrates were used as feedstock and citric acid as complexing agent in the sol-gel procedure. Powders were calcinated at 1123K and further processing by ball milling. Pure Ca₃Co₄O₉ powders were sintered by SPS and conventional method.

Original language	English
Title of host publication	9th European Conference on Thermoelectrics ECT2011
Editors	K. M. Paraskevopoulos , E. Hatzikraniotis
Publisher	American Institute of Physics (AIP)
Pages	351-353
ISBN (Print)	978-0-7354-1048-0
DOIs	https://doi.org/10.1063/1.4731569
Publication status	Published - 2011
MoE publication type	A4 Article in a conference publication

Publication series

Series	AIP Conference Proceedings
Number	1
Volume	1449

Keywords

thermoelectric oxide
p-type
misfit compound

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10.1063/1.4731569

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title = "Experiments with semiconducting p-type misfit compound",

abstract = "Ca3Co4O9 is a p-type semiconductor and a promising thermoelectric material with misfit layer structure. Cobalt-based layered structure materials have been studied as thermoelectric material candidates because of their nontoxicity, light weight, high thermal and chemical stability and oxidation resistance at high temperature. The operating area of Ca3Co4O9 in thermoelectric applications is roughly from 800K to 1000K. Ca3Co4O9 powders were synthetized by a sol-gel method which enables fabrication of high purity and homogeneous particles. Calcium and cobalt nitrate hydrates were used as feedstock and citric acid as complexing agent in the sol-gel procedure. Powders were calcinated at 1123K and further processing by ball milling. Pure Ca3Co4O9 powders were sintered by SPS and conventional method.",

keywords = "thermoelectric oxide, p-type, misfit compound",

author = "Hanna Heinonen and Jyrki Tervo",

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series = "AIP Conference Proceedings",

publisher = "American Institute of Physics (AIP)",

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booktitle = "9th European Conference on Thermoelectrics ECT2011",

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}

Experiments with semiconducting p-type misfit compound. / Heinonen, Hanna; Tervo, Jyrki.

9th European Conference on Thermoelectrics ECT2011. ed. / K. M. Paraskevopoulos ; E. Hatzikraniotis. American Institute of Physics (AIP), 2011. p. 351-353 (AIP Conference Proceedings; No. 1, Vol. 1449).

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

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N2 - Ca3Co4O9 is a p-type semiconductor and a promising thermoelectric material with misfit layer structure. Cobalt-based layered structure materials have been studied as thermoelectric material candidates because of their nontoxicity, light weight, high thermal and chemical stability and oxidation resistance at high temperature. The operating area of Ca3Co4O9 in thermoelectric applications is roughly from 800K to 1000K. Ca3Co4O9 powders were synthetized by a sol-gel method which enables fabrication of high purity and homogeneous particles. Calcium and cobalt nitrate hydrates were used as feedstock and citric acid as complexing agent in the sol-gel procedure. Powders were calcinated at 1123K and further processing by ball milling. Pure Ca3Co4O9 powders were sintered by SPS and conventional method.

AB - Ca3Co4O9 is a p-type semiconductor and a promising thermoelectric material with misfit layer structure. Cobalt-based layered structure materials have been studied as thermoelectric material candidates because of their nontoxicity, light weight, high thermal and chemical stability and oxidation resistance at high temperature. The operating area of Ca3Co4O9 in thermoelectric applications is roughly from 800K to 1000K. Ca3Co4O9 powders were synthetized by a sol-gel method which enables fabrication of high purity and homogeneous particles. Calcium and cobalt nitrate hydrates were used as feedstock and citric acid as complexing agent in the sol-gel procedure. Powders were calcinated at 1123K and further processing by ball milling. Pure Ca3Co4O9 powders were sintered by SPS and conventional method.

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