Semiconducting polymer-MXene blends with improved charge carrier mobilities and their application in field-effect transistors

IF 2.2 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters: X Pub Date : 2025-05-14 DOI:10.1016/j.mlblux.2025.100244

Jurij Urbančič , Huanhuan Shi , Ali Shaygan Nia , Egon Pavlica

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引用次数: 0

Abstract

Ti₃C₂T_x is the first successfully obtained member of the MXene family. Due to its many excellent properties such as high metallic conductivity, solubility and capacitance, it has attracted a wide interest in potential applications such as supercapacitors and energy storage devices. In the presented work, we have successfully produced various semiconducting thin-films consisting of Poly(3-hexylthiophene-2,5-diyl) (P3HT) organic semiconductor (OS) blended with MXene flakes with different MXenes concentrations. Time-of-flight photoconductivity (TOFP) measurements revealed a 370 % enhancement in charge carrier mobility compared to neat P3HT. Organic field-effect transistors (OFETs) were also fabricated using these blends, showing a 20 % improvement in field-effect mobility. This discrepancy arises due to contact resistance and interface effects in OFETs, which are absent in TOFP measurements. These results highlight the promise of P3HT:MXene blends for advanced electronic applications, where high mobility and straightforward processing are essential.

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提高载流子迁移率的半导体聚合物- mxene共混物及其在场效应晶体管中的应用

Ti3C2Tx是MXene家族中第一个成功获得的成员。由于其具有高金属导电性、高溶解度和高电容等优异性能，在超级电容器和储能器件等潜在应用领域引起了广泛的兴趣。在本文中，我们成功地制备了由聚（3-己基噻吩-2,5-二基）（P3HT）有机半导体（OS）与不同MXenes浓度的MXenes片混合组成的各种半导体薄膜。飞行时间光电导率（TOFP）测量显示，与纯P3HT相比，载流子迁移率提高了370%。有机场效应晶体管（ofet）也使用这些混合物制成，显示出20%的场效应迁移率提高。这种差异是由于ofet中的接触电阻和界面效应引起的，而这在TOFP测量中是不存在的。这些结果突出了P3HT:MXene共混物在先进电子应用中的前景，在这些应用中，高移动性和直接处理是必不可少的。

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