A possibility to realize a high thermoelectric figure of merit in quasi-one-dimensional organic crystals

Abstract

The thermoelectric opportunities of some highly conducting quasi-one dimensional (QID) organic crystals are studied theoretically. The electrical conductivity, Seebeck coefficient and electronic thermal conductivity are investigated as functions of crystal parameters. Obtained dependences are used to determine the optimal expected values of ZT at room temperature. The mechanism for ZT enhancement and the needed tuning of crystal parameters in order to maximize the enhancement are analyzed in detail. It is shown that due to the interference of two main electron-phonon interaction mechanisms, values as high as ZT -20 are possible both in nand p-type QID materials. Recommendations are elaborated for the realization of such materials. IntroductionThe search of materials with a higher thermoelectric figure of merit was and remains to be an important and urgent problem of solid state physics. In the last years, the increased demand for solid state microcoolers for microelectronic

Multidimensional Nanoscopic Approaches to New Thermoelectric Materials (Postprint)

“…Casian [10][11][12][13][14] et al published a series of pap molecular nanowires but have also been k transfer salts, organic metals or organic se composed of 1-D stacks of planar buildin Electrical conductivity is typically introdu (chemical oxidation, or p-doping) electron reasonable values for transport properties as high as ~35 could be obtained.…”