naa a22 4500 510803539 CHVBK 20180411083406.0 cr unu---uuuuu 180411e20130301xx s 000 0 eng 10.1007/s11664-012-2374-1 doi (NATIONALLICENCE)springer-10.1007/s11664-012-2374-1 Kwok H. Department of Electrical and Computer Engineering, University of Victoria, P.O. Box 3055, Victoria, BC, Canada aut Thermal Conductivity and ZT in Disordered Organic Thermoelectrics [Elektronische Daten] [H. Kwok] For decades, continuous attempts have been made to improve the figure of merit (ZT) of thermoelectrics. The theory behind the Seebeck effect itself is well researched, but the problem with ZT is related to materials properties that offset one another. This work analyzed the link between the site energy distributions and thermal conductivity of oxidized poly(3,4-ethylenedioxythiophene-tosylate) (PEDOT:Tos), which was reported to be a good organic thermoelectric. To understand how heat flow was affected by "disorder” in PEDOT:Tos and the associated electron-phonon interactions, we computed the values of the thermal conductivity κ and ZT using materials parameters extracted from the open literature. By varying the values of the parameters separately, we were able to identify their individual influence on κ and ZT. Our results suggest that ZT is most sensitive to changes in σ, the bandwidth of the density of states (DOS) of the transport sites, and less so to changes in n eff, the effective carrier density. Our simulations also suggested that ZT could become exceptionally large (approaching a value of ~20) if σ were lowered to 1meV to 2meV. This would be a tremendous approach to increase ZT in oxidized PEDOT:Tos. TMS, 2012 Disordered organic semiconductors nationallicence thermal conductivity nationallicence ZT nationallicence bandwidth of the DOS of the transport sites nationallicence electron-phonon interactions nationallicence Journal of Electronic Materials Springer US; http://www.springer-ny.com 42/3(2013-03-01), 355-358 0361-5235 42:3<355 2013 42 11664 https://doi.org/10.1007/s11664-012-2374-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11664-012-2374-1 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Kwok H. Department of Electrical and Computer Engineering, University of Victoria, P.O. Box 3055, Victoria, BC, Canada aut NATIONALLICENCE 773 0- Journal of Electronic Materials Springer US; http://www.springer-ny.com 42/3(2013-03-01), 355-358 0361-5235 42:3<355 2013 42 11664 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer