Ti_(3)C_(2)T_(x) MXene for organic/perovskite optoelectronic devices

Ti_(3)C_(2)T_(x) MXene在有机/钙钛矿光电器件中的应用进展

MXenes are emerging two-dimensional(2D)nanomaterials composed of transition metal carbides and/or nitrides and possess unique layered structures with abundant surface functional groups,which enable them with excellent and tunable properties.MXenes films can be solution-processed in polar solvents and are very suitable for optoelectronic device applications.Especially,Ti_(3)C_(2)T_(x) MXene with the clear advantages of facile synthesis,flexible surface controlling,easily tunable work function,high optical transmittance and excellent conductivity shows great potential for applications in organic/perovskite optoelectronic devices.Therefore,this review briefly introduces the mainstream synthesis methods,optical and electrical properties of MXenes,and comprehensively summarizes the versatile applications of Ti_(3)C_(2)T_(x) MXene in different functional layers(electrode,interface layer and active layer)of organic/perovskite optoelectronic devices including solar cells and light-emitting diodes.Finally,the current application characteristics and the future possibilities of MXenes in organic/perovskite optoelectronic devices are concluded and discussed.

MXenes是一种新兴的二维纳米材料,由过渡金属碳化物和/或氮化物组成,具有独特的层状结构和丰富的表面官能团,并表现出优异且可调的物理和化学性质。MXenes可以分散在极性溶剂中并通过溶液加工(如旋涂、喷涂、刮涂、印刷等)形成MXenes薄膜,非常适合在光电器件应用。尤其是Ti_(3)C_(2)T_(x) MXene具有合成简单、表面化学组分调控灵活、功函数可调、高的光学透过率和优异的导电性等明显优势,在有机/钙钛矿光电器件中显示出巨大的应用潜力。因此,本综述简要介绍了MXenes的主流合成方法、光学和电学性质,并全面总结了Ti_(3)C_(2)T_(x) MXene在有机/钙钛矿光电器件(包括太阳电池和发光二极管)的不同功能层(包括电极、界面层和活性层)中的应用。最后,讨论和展望了MXenes在有机/钙钛矿光电器件中的应用特点和未来研究方向。