DOI: 10.1002/adma.202301850
“Optically active MXenes in van der Waals heterostructures”,
M. A. K. Purbayanto, M. Chandel, M. Birowska, A. Rosenkranz, A. M. Jastrzębska.
Abstract:
The vertical integration of the 2D distinct materials in van der Waals (vdW) heterostructures provides opportunity for an interface engineering and modulation of electronic and optical properties. However, scarce experimental studies revealed many challenges for vdW heterostructures, hampering the fine-tuning of their electronic and optical functionalities. Optically active MXenes, the most recent member in the 2D family, with an excellent hydrophilicity, rich surface chemistry, and intriguing optical properties, are novel 2D platform for optoelectronics applications. Coupling MXenes with various 2D materials into vdW heterostructures can open new avenues for the exploration of physical phenomena of novel quantum-confined nanostructures and devices. Therefore, we examine the fundamental basis and recent findings in vertical vdW heterostructures composed of MXenes as a primary component, and other 2D materials as secondary components. We discuss their robust designs and synthesis approaches that could push the boundaries of light-harvesting, transition, and utilization. MXenes provide a unique playground pursuing an extraordinary optical response or unusual light conversion features/functionalities. We finally summarize the recent findings and provide a perspective for the future development of next generation vdW multi-functional materials enriched by MXenes.