Aluminum-doped zinc oxide prepared by selective laser sintering of nanoparticles for thermoelectric application
Journal
Ceramics International
ISSN
0272-8842
Date Issued
2025
Author(s)
Abstract
Aluminum-doped zinc oxide (AZO) is a promising material for thermoelectric applications because - it has high electrical conductivity and low thermal conductivity. In this study, AZO films are prepared with selective laser sintering (SLS) of AZO nanoparticles. A nanosecond pulsed laser was utilized to selectively sinter AZO nanoparticles with Al doping concentrations of 0.5 wt%, 1.0 wt%, and 2 wt% on quartz substrates. The laser process facilitated the melting and interconnection of the AZO nanoparticles, resulting in the formation of continuous thin films. Experimental results revealed that the carrier concentration in AZO films increased with higher laser intensity and greater pulse overlap ratios. The optimal thermoelectric performance was observed at a doping concentration of 0.5 wt%, achieving a power factor of 11.05 μW/mK2. This highlights the potential of AZO films for thermoelectric energy harvesting applications when processed via SLS.
Subjects
Aluminum-doped zinc oxide nanoparticles
Power factor
Seebeck coefficient
Selective laser sintering
Thermoelectric films
Publisher
Elsevier BV
Type
journal article