Thermoelectric and Transport Properties of n-type Palladium - Doped Chalcopyrite Cu1-xPdxFeS2 Compounds

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F19%3A39915185" target="_blank" >RIV/00216275:25310/19:39915185 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389013:_____/19:00502360

Výsledek na webu

<a href="https://link.springer.com/content/pdf/10.1007/s11664-018-06866-0.pdf" target="_blank" >https://link.springer.com/content/pdf/10.1007/s11664-018-06866-0.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.10007/s11664-018-06866-0" target="_blank" >10.10007/s11664-018-06866-0</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Thermoelectric and Transport Properties of n-type Palladium - Doped Chalcopyrite Cu1-xPdxFeS2 Compounds

Popis výsledku v původním jazyce

Semiconducting CuFeS2 with a diamond-like structure has been recently studied as a potential candidate for thermoelectric applications. In the present study, Pd substitution for Cu was examined in terms of thermoelectric properties. A series of Pd-doped Cu1-xPdxFeS2 (x=0-0.1) samples were synthesized. The thermoelectric and transport properties of hot-pressed sample pellets were characterized. We observed three effects: (1) Pd substituted for Cu behaves as an effective donor, increasing the free electron concentration. (2) Formation of the foreign phasePdSwas observed above the solubility limit of Pd in CuFeS2 (x 0.02). (3) Segregation of the foreign phase is accompanied by the formation of FeCu2+ antisite defects. All these effects synergically enhanced both the power factor S-2 sigma and the thermoelectric parameter ZT. The highest values of the power factor (approximate to 1mWm(-1)K(-1)) and the ZT parameter (approximate to 0.19 at 573K) were achieved in the Cu0.9Pd0.1FeS2 sample.

Název v anglickém jazyce

Thermoelectric and Transport Properties of n-type Palladium - Doped Chalcopyrite Cu1-xPdxFeS2 Compounds

Popis výsledku anglicky

Semiconducting CuFeS2 with a diamond-like structure has been recently studied as a potential candidate for thermoelectric applications. In the present study, Pd substitution for Cu was examined in terms of thermoelectric properties. A series of Pd-doped Cu1-xPdxFeS2 (x=0-0.1) samples were synthesized. The thermoelectric and transport properties of hot-pressed sample pellets were characterized. We observed three effects: (1) Pd substituted for Cu behaves as an effective donor, increasing the free electron concentration. (2) Formation of the foreign phasePdSwas observed above the solubility limit of Pd in CuFeS2 (x 0.02). (3) Segregation of the foreign phase is accompanied by the formation of FeCu2+ antisite defects. All these effects synergically enhanced both the power factor S-2 sigma and the thermoelectric parameter ZT. The highest values of the power factor (approximate to 1mWm(-1)K(-1)) and the ZT parameter (approximate to 0.19 at 573K) were achieved in the Cu0.9Pd0.1FeS2 sample.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Electronic Materials

ISSN

0361-5235

e-ISSN

—

Svazek periodika

48

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

10

Strana od-do

1795-1804

Kód UT WoS článku

000460453100002

EID výsledku v databázi Scopus

2-s2.0-85059542130