Organic small molecule (OSM)/single-walled carbon nanotube (SWCNT) composites are promising thermoelectric (TE) materials, however the low Seebeck coefficient (S) limits their application. Here, a eutectic nematic mixture E7 was chosen to improve the S and power factor (PF) of SWCNTs by energy filtering process. As a result, the introduction of E7 can significantly decrease the carrier concentration of the composite with the mobility greatly enhanced, leading to an improved S (2.23 times of that of pristine SWCNTs). At the mass ratio of 1:0.25, the p-type SWCNT/E7 composites displayed a maximum PF of 428.59 ± 58.15 μW m⁻¹ K⁻², which was one of the highest values among OSM-based TE composites reported so far. In addition, after doped with triethylamine, SWCNT/E7 can convert from p-type to n-type. This study demonstrated that SWCNT/E7 composites showed great promise in TE materials and opened up a new avenue for the development of TE materials.

有机小分子（ OSM ）/单壁碳纳米管（SWCNT）复合材料是很有前途的热电（TE）材料，但其较低的塞贝克系数（S）限制了其应用。在这里，选择共晶向列混合物 E7 以通过能量过滤过程提高 SWCNT的S和功率因数 (PF)。因此，E7 的引入可以显着降低复合材料的载流子浓度，并且迁移率大大提高，从而提高了S（原始 SWCNT 的 2.23 倍）。在质量比为 1:0.25 时，p 型 SWCNT/E7 复合材料的最大 PF 为 428.59 ± 58.15 μW m ^-1  K ^-2，这是迄今为止报道的基于 OSM 的 TE 复合材料中的最高值之​​一。此外，SWCNT/E7掺杂三乙胺后，可以从p型转变为n型。该研究表明 SWCNT/E7 复合材料在 TE 材料中显示出巨大的前景，并为 TE 材料的开发开辟了一条新途径。