Low-temperature properties of thermoelectric generators using molecular conductors

Thermoelectric properties of organic charge transfer salts from first-principles investigations: role of molecular packing and triiodide anions

“…For CT salts with an intrinsically large PF, the operation temperature is an important factor affecting their TE properties. 14 Hence, the intrinsic electrical conductivity, Seebeck coefficient, and power factor along with crystallographic directions of b 00and k-phase CT salts as a function of temperature are calculated to determine the optimal temperature as depicted in Fig. 5.…”

“…13 Kiyota et al also successfully built TE generators based on a series of p-type and n-type CT salts, which exhibit promising TE applications. 14 Additionally, Kiyota and Kadoya et al found excellent power factors of (BTBT) 2 XF 6 (BTBT ¼ [1]benzothieno [3,2-b][1]benzothiophene; X ¼ P, As, Sb, and Ta) and (BSBS) 2 XF 6 (BSBS ¼ [1] benzoseleno [3,2-b]benzoselenophene; X ¼ As, Sb, Ta) benetting from large electrical conductivities. 15,16 Hence, it is demonstrated that CT salts show fantastic prospects in the eld of thermoelectrics, but relevant TE study of this class of material lags behind that of polymers.…”

Advanced Thermoelectric Materials for Flexible Cooling Application

“…The optimum TE performance of organic materials usually achieves at room temperature and some of them can even be well maintained at ultra‐low temperatures through reasonable molecular design. [ 44 ]…”

A new donor for charge-transfer systems: synthesis and properties of 2,4,7,9-tetramethyl-1,6-dithiapyrene (TMDTP) and structure of (TMDTP)3(PF6)2·2THF and TMDTP–TCNQ

“…2,3 Recently, radical cation salts have also gained interest because some of them have a high thermoelectric effect making them highly interesting for small generators of electricity. 4 Having large conjugated p-systems in conducting organic materials is advantageous because the transport of charge takes place through the stacked molecules and having a large contact surface should lead to smaller on-site electron to electron repulsion and a higher transfer integral in terms of the Hubbard-model. 5 Furthermore, the hydrogen atoms on the periphery of a polycyclic aromatic compound can be substituted with groups that can be used to engineer the packing in the solid state and to inuence the redox potentials.…”

“… 2,3 Recently, radical cation salts have also gained interest because some of them have a high thermoelectric effect making them highly interesting for small generators of electricity. 4 …”