naa a22 4500 510802680 CHVBK 20180411083402.0 cr unu---uuuuu 180411e20130701xx s 000 0 eng 10.1007/s11664-012-2297-x doi (NATIONALLICENCE)springer-10.1007/s11664-012-2297-x Measurement of Thermoelectric Properties of Phenylacetylene-Capped Silicon Nanoparticles and Their Potential in Fabrication of Thermoelectric Materials [Elektronische Daten] [Shane Ashby, Jorge García-Cañadas, Gao Min, Yimin Chao] Silicon is a highly attractive material for the fabrication of thermoelectric materials. Nanostructured silicon materials, such as silicon nanowires (SiNWs), show great potential as they show low thermal conductivities due to efficient phonon scattering but similar electrical conductivities to bulk silicon. Silicon nanoparticles (SiNPs) are easier to synthesize and show a greater number of surface defects, which suggests that more efficient phonon scattering can be achieved, but these materials also show low electrical conductivity due to defects within the materials unless pressed at high temperatures (1100°C). Conjugated capping layers show the potential to bridge these defects, giving higher conductivity without the need for this process. Phenylacetylene-capped SiNPs are synthesized via the micelle reduction method and pressed into a pellet. Measurements of the electrical conductivity, Seebeck coefficient, and thermal conductivity were taken. The results show that the material produced from these particles shows a relatively high Seebeck coefficient (3228.84μVK−1) which would have a positive effect on the figure of merit (ZT). A respectable electrical conductivity (18.1Sm−1) and a low thermal conductivity (0.1Wm−1K−1) confirm the potential of using conjugated molecules as a way of cross-linking between nanoparticles in a bulk material fabricated from SiNPs. These results give a figure of merit of 0.57, which is comparable to better established thermoelectric materials. TMS, 2012 Thermoelectric nationallicence silicon nationallicence phenylacetylene nationallicence nanoparticles nationallicence Seebeck coefficient nationallicence Ashby Shane Energy Materials Laboratory, School of Chemistry, University of East Anglia, NR4 7TJ, Norwich, UK aut García-Cañadas Jorge Cardiff School of Engineering, Cardiff University, CF24 3AA, Cardiff, UK aut Min Gao Cardiff School of Engineering, Cardiff University, CF24 3AA, Cardiff, UK aut Chao Yimin Energy Materials Laboratory, School of Chemistry, University of East Anglia, NR4 7TJ, Norwich, UK aut Journal of Electronic Materials Springer US; http://www.springer-ny.com 42/7(2013-07-01), 1495-1498 0361-5235 42:7<1495 2013 42 11664 https://doi.org/10.1007/s11664-012-2297-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11664-012-2297-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ashby Shane Energy Materials Laboratory, School of Chemistry, University of East Anglia, NR4 7TJ, Norwich, UK aut NATIONALLICENCE 700 1- García-Cañadas Jorge Cardiff School of Engineering, Cardiff University, CF24 3AA, Cardiff, UK aut NATIONALLICENCE 700 1- Min Gao Cardiff School of Engineering, Cardiff University, CF24 3AA, Cardiff, UK aut NATIONALLICENCE 700 1- Chao Yimin Energy Materials Laboratory, School of Chemistry, University of East Anglia, NR4 7TJ, Norwich, UK aut NATIONALLICENCE 773 0- Journal of Electronic Materials Springer US; http://www.springer-ny.com 42/7(2013-07-01), 1495-1498 0361-5235 42:7<1495 2013 42 11664 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer