期刊
ACS NANO
卷 15, 期 5, 页码 8940-8952出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.1c01621
关键词
MXene; field-driven MXene electronics; transparent and flexible electrodes; polymer-laminated MXene; light-emitting displays; touch sensors; triboelectric nanogenerators
类别
资金
- National Research Foundation of Korea [2018M3D1A1058536, 2020R1A2B5B03002697]
- National Research Foundation of Korea under Ministry of Education
- Basic Science Research Program through the National Research Foundation of Korea [2017R1A2B3006469]
- Korea Institute of Science and Technology (KIST), Republic of Korea
- National Research Foundation of Korea [4199990514159, 2017R1A2B3006469] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Transparent and flexible MXene electronic devices have been demonstrated by laminating a thin polymer film onto a solution-processed MXene layer, providing high environmental stability even under prolonged air exposure at high temperatures and humidity levels. The resulting polymer-laminated (PL) MXene electrode enables the development of field-driven photoelectronic devices with high transparency and mechanical flexibility, showcasing applications in electroluminescent displays, pressure sensors, and nanogenerators for sensing and energy harvesting.
MXenes (Ti3C2Tx) are two-dimensional transition metal carbides and carbonitrides with high conductivity and optical transparency. However, transparent MXene electrodes with high environmental stability suitable for various flexible organic electronic devices have rarely been demonstrated. By laminating a thin polymer film onto a solution-processed MXene layer to protect the MXene film from harsh environmental conditions, we present transparent and flexible MXene electronic devices. A thin polymer layer spin-coated onto a transparent MXene electrode provides environmental stability even under air exposure longer than 7 d at high temperatures (up to 70 degrees C) and humidity levels (up to 50%) without degrading the transparency of the electrode. The resulting polymer-laminated (PL) MXene electrode facilitates the development of a variety of field-driven photoelectronic devices by exploiting the electric field exerted between the MXene layer and the counter electrode through the insulating polymer. Field-induced electroluminescent displays, based on both organic and inorganic phosphors, with PL-MXene electrodes are demonstrated with high transparency and mechanical flexibility. Furthermore, our PL-MXene electrode exhibits high versatility through successful implementation in capacitive-type pressure sensors and triboelectric nanogenerators, resulting in field-driven sensing and energy harvesting electronic devices with excellent operation reliability.
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