%0 Journal Article
%A Dreßler, Christian
%A Löhnert, Romy
%A Gonzalez, Jesus
%A Guillon, Olivier
%A Töpfer, Jörg
%A Teichert, Steffen
%T Effect of Carbon Nanotubes on Thermoelectric Properties in Zn$_{0.98}$Al$_{0.02}$O
%J Journal of electronic materials
%V 45
%N 3
%@ 1543-186X
%C Warrendale, Pa
%I TMS
%M FZJ-2016-00412
%P 1459-1463
%D 2016
%X Thermoelectric oxides can provide the advantage of high-temperature stability in oxygen-containing atmospheres. It is known that the incorporation of multiwalled carbon nanotubes (mw-CNT) can change the thermoelectric as well as the structural properties of oxides. Here, we report the influence of mw-CNT on the thermoelectric properties of Al-doped ZnO (AZO). The preparation of the mw-CNT-added AZO was done using an ultrasonic mixing of the starting materials followed by a spark plasma sintering process under vacuum. The Seebeck coefficient S, thermal conductivity λ and electrical conductivity σ were determined in the temperature range between 300 K and 900 K. It was observed that the thermal conductivity is significantly reduced by the incorporation of the mw-CNT. At the same time, the electrical conductivity is increased by a factor of 21 from 8700 S/m to 190,000 S/m. The Power factor PF=S2σ indicates that the addition of mw-CNT improves the thermoelectric properties of Al doped ZnO in comparison to the reference sample prepared with same process but without mw-CNT
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000371163400038
%R 10.1007/s11664-015-4070-4
%U https://juser.fz-juelich.de/record/280647