Abstract

The investigation of the solvent-dependent thermoelectric properties of [6,6]-Phenyl-C71 butyric acid methyl ester, commonly known as PC₇₀BM, is reported. This work shows how using different solvents leads to obtain different values of thermoelectric power factor and figure of merit for PC₇₀BM. Samples were prepared from solutions of PC₇₀BM in five different solvents: chlorobenzene (CB), 1,2-dichlorobenzene (DCB), 1,2,4-trichlorobenzene (TCB), chloroform (CF), and toluene (TO), and their thermoelectric properties were determined by measuring electrical conductivity, Seebeck coefficient, and mobility. By using polar solvents with high boiling points, such as TCB, the value of mobility increased by a factor of 23, electrical conductivity improved by a factor of 13, and enhancement in the negative Seebeck coefficient value from ‒405 to –460 μV/K was observed.

中文翻译：

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PC70BM 的溶剂相关热电性能

摘要

报道了[6,6]-苯基-C71丁酸甲酯（俗称PC ₇₀ BM）的溶剂依赖性热电性质的研究。_{这项工作展示了使用不同的溶剂如何导致 PC 70} BM获得不同的热电功率因数和品质因数值。样品由 PC _{70溶液制备}BM 在五种不同溶剂中：氯苯 (CB)、1,2-二氯苯 (DCB)、1,2,4-三氯苯 (TCB)、氯仿 (CF) 和甲苯 (TO)，它们的热电性能通过测量来确定电导率、塞贝克系数和迁移率。通过使用 TCB 等高沸点极性溶剂，迁移率值提高了 23 倍，电导率提高了 13 倍，并且负塞贝克系数值从 -405 提高到 -460 μV/K被观测到。