Thermoelectric characteristics of β-Ag2Se1+x prepared via a combined rapid mechano-thermal approach

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F24%3A00604024" target="_blank" >RIV/68378271:_____/24:00604024 - isvavai.cz</a>

Výsledek na webu

<a href="https://hdl.handle.net/11104/0361380" target="_blank" >https://hdl.handle.net/11104/0361380</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/inorganics12120334" target="_blank" >10.3390/inorganics12120334</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Thermoelectric characteristics of β-Ag2Se1+x prepared via a combined rapid mechano-thermal approach

Popis výsledku v původním jazyce

This study investigates the thermoelectric properties of Se-rich β-Ag2Se synthesized via a mechanochemical method followed by spark plasma sintering (SPS) in less than 30 min of the total reaction time. Importantly, only a short 10 min milling process followed by appropriate SPS was enough to produce single-phase Ag2Se1+x samples with varying selenium content (where x = 0, 0.01, 0.02, 0.04). The introduction of excess selenium significantly influenced the thermoelectric performance, optimizing the carrier concentration during synthesis and resulting in substantial thermoelectric improvements. The sample with nominal composition Ag2Se1.01 exhibited a high dimensionless figure-of-merit (ZT) >0.9 at 385 K, which is nearly six times higher than the reference sample (β-Ag2Se). Our findings bring valuable insight into the technology of optimization of thermoelectric characteristics of Se-rich β-Ag2Se, highlighting its potential for applications in thermoelectric devices.n

Název v anglickém jazyce

Thermoelectric characteristics of β-Ag2Se1+x prepared via a combined rapid mechano-thermal approach

Popis výsledku anglicky

This study investigates the thermoelectric properties of Se-rich β-Ag2Se synthesized via a mechanochemical method followed by spark plasma sintering (SPS) in less than 30 min of the total reaction time. Importantly, only a short 10 min milling process followed by appropriate SPS was enough to produce single-phase Ag2Se1+x samples with varying selenium content (where x = 0, 0.01, 0.02, 0.04). The introduction of excess selenium significantly influenced the thermoelectric performance, optimizing the carrier concentration during synthesis and resulting in substantial thermoelectric improvements. The sample with nominal composition Ag2Se1.01 exhibited a high dimensionless figure-of-merit (ZT) >0.9 at 385 K, which is nearly six times higher than the reference sample (β-Ag2Se). Our findings bring valuable insight into the technology of optimization of thermoelectric characteristics of Se-rich β-Ag2Se, highlighting its potential for applications in thermoelectric devices.n

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Inorganic

ISSN

2304-6740

e-ISSN

2304-6740

Svazek periodika

12

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

13

Strana od-do

334

Kód UT WoS článku

001385671300001

EID výsledku v databázi Scopus

2-s2.0-85213462422