Electrical nature of randomly oriented low-dimensional structural hybrids of carbon,Physical Chemistry Chemical Physics

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Electrical nature of randomly oriented low-dimensional structural hybrids of carbon
Physical Chemistry Chemical Physics ( IF 2.9 ) Pub Date : 2024-09-03 , DOI: 10.1039/d4cp00702f
Sonia Saini _{1,

2} , Kuntala Bhattacharjee ₁ , Girish M Gouda ₂

Affiliation

Low-dimensional carbon materials are of great interest and have tremendous potential for application in flexible plastic electronics. However, the development of devices based on carbon structural hybrids is often hindered due to the high recombination rate of photoexcited charges, low absorbance, and other factors. This work discusses the emergence of multi-component structural forms of carbon from single-wall carbon nanotubes (SWCNTs) and demonstrates the electrical nature of the film containing these heterogeneous low-dimensional structural derivatives that are amalgamated in a polyurethane matrix. SWCNTs serve as a building block to give rise to multi-structural compounds, including multi-wall carbon nanotubes (MWCNTs), graphene sheets (GSs), carbon nanoscrolls (CNS), ‘Y’ and ‘T’ junctions, twisted CNTs and carbon nano-onion (CNO)-like structures, after performing oxidative purification and covalent functionalization processes. These one- and two-dimensional (1D and 2D) components with different individual electrical characteristics when integrated in a polyurethane binder and spin-coated on a SiO₂/Si substrate exhibit an overall semiconducting behaviour. Current (I)–voltage (V) characteristics reveal thermally driven photo-excited charges that are mainly responsible for the observed current trend of the film. Herein, we explore a facile cost-effective strategy to fabricate stable thin film coatings comprising a random network of functionalized structural derivatives of carbon and polymer conjugates and investigate the overall electrical nature to envisage incorporating these nanomaterials in future plastic electronics.

中文翻译：

随机取向的碳低维结构杂化物的电学性质

低维碳材料引起了人们的极大兴趣，并且在柔性塑料电子产品中具有巨大的应用潜力。然而，由于光生电荷复合率高、吸光度低等因素，基于碳结构杂化材料的器件的发展往往受到阻碍。这项工作讨论了单壁碳纳米管 (SWCNT) 中碳的多组分结构形式的出现，并展示了包含这些异质低维结构衍生物的薄膜的电性质，这些衍生物合并在聚氨酯基质中。 SWCNT 作为构建块来产生多结构化合物，包括多壁碳纳米管 (MWCNT)、石墨烯片 (GS)、碳纳米卷 (CNS)、“Y”和“T”结、扭曲 CNT 和碳在进行氧化纯化和共价功能化过程后，形成类似纳米洋葱（CNO）的结构。这些具有不同电气特性的一维和二维（1D 和 2D）组件在集成到聚氨酯粘合剂中并旋涂在 SiO ₂ /Si 基板上时表现出整体半导体行为。电流 ( I )-电压 ( V ) 特性揭示了热驱动的光激发电荷，这主要是观察到的薄膜电流趋势的原因。在此，我们探索了一种简便且经济有效的策略来制造稳定的薄膜涂层，该涂层包含碳和聚合物共轭物的功能化结构衍生物的随机网络，并研究了整体电学性质，以设想将这些纳米材料纳入未来的塑料电子产品中。

更新日期：2024-09-04

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