Xu Xiangming, Wu Hao, He Xin, Hota Mrinal K, Liu Zhixiong, Zhuo Sifei, Kim Hyunho, Zhang Xixiang, Alshareef Husam N
Materials Science and Engineering, Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia.
ACS Nano. 2020 Aug 25;14(8):9840-9847. doi: 10.1021/acsnano.0c02497. Epub 2020 Aug 4.
Electronic applications of porous metal-organic frameworks (MOFs) have recently emerged as an important research area. However, there is still no report on using MOF solid electrolytes in iontronics, which could take advantage of the porous feature of MOFs in the ionic transport. In this article, MXene-derived two-dimensional porphyrinic MOF (MX-MOF) films are demonstrated as an electronic-grade proton-conducting electrolyte. Meanwhile, the MX-MOF film shows high quality, chemical stability, and capability of standard device patterning processes (.., dry etching and optical and electron beam lithography). Using the commercialized nanofabrication processes, an electric double-layer (EDL) transistor is demonstrated using the MX-MOF film (derived from VCT MXene) as an ionic gate and MoS film as a semiconducting channel layer. The EDL transistor, operated by applying an electric field to control the interaction between ions and electrons, is the core device platform in the emerging iontronics field. Therefore, The MX-MOF, confirmed as a solid electrolyte for EDL transistor devices, could have a significant impact on iontronics research and development.
多孔金属有机框架（MOFs）的电子应用最近已成为一个重要的研究领域。然而，关于在离子电子学中使用MOF固体电解质的报道仍然没有，而离子电子学可以利用MOFs在离子传输方面的多孔特性。在本文中，二维卟啉MOF（MX-MOF）薄膜由MXene衍生而来，被证明是一种电子级质子传导电解质。同时，MX-MOF薄膜具有高质量、化学稳定性以及适用于标准器件图案化工艺（如干法蚀刻、光学和电子束光刻）的能力。利用商业化的纳米制造工艺，展示了一种以MX-MOF薄膜（源自VCT MXene）作为离子栅极、MoS薄膜作为半导体沟道层的双电层（EDL）晶体管。通过施加电场来控制离子与电子之间相互作用而工作的EDL晶体管，是新兴离子电子学领域的核心器件平台。因此，被确认为EDL晶体管器件固体电解质的MX-MOF，可能会对离子电子学的研发产生重大影响。
