Ricciardulli Antonio Gaetano, Yang Sheng, Smet Jurgen H, Saliba Michael
Technical University of Darmstadt, Darmstadt, Germany.
Université de Strasbourg, CNRS, ISIS UMR 7006, Strasbourg, France.
Nat Mater. 2021 Oct;20(10):1325-1336. doi: 10.1038/s41563-021-01029-9. Epub 2021 Jun 10.
The library of two-dimensional (2D) materials has been enriched over recent years with novel crystal architectures endowed with diverse exciting functionalities. Bulk perovskites, including metal-halide and oxide systems, provide access to a myriad of properties through molecular engineering. Their tunable electronic structure offers remarkable features from long carrier-diffusion lengths and high absorption coefficients in metal-halide perovskites to high-temperature superconductivity, magnetoresistance and ferroelectricity in oxide perovskites. Emboldened by the 2D materials research, perovskites down to the monolayer limit have recently emerged. Like other 2D species, perovskites with reduced dimensionality are expected to exhibit new physics and to herald next-generation multifunctional devices. In this Review, we critically assess the preliminary studies on the synthetic routes and inherent properties of monolayer perovskite materials. We also discuss how to exploit them for widespread applications and provide an outlook on the challenges and opportunities that lie ahead for this enticing class of 2D materials.
近年来，二维（2D）材料库因具有各种令人兴奋的功能的新型晶体结构而得到丰富。包括金属卤化物和氧化物体系在内的体相钙钛矿，通过分子工程可实现多种性质。它们可调谐的电子结构提供了显著的特性，从金属卤化物钙钛矿中的长载流子扩散长度和高吸收系数到氧化物钙钛矿中的高温超导性、磁阻和铁电性。受二维材料研究的鼓舞，降至单层极限的钙钛矿最近出现了。与其他二维材料一样，维度降低的钙钛矿有望展现新的物理特性，并引领下一代多功能器件的发展。在本综述中，我们批判性地评估了关于单层钙钛矿材料合成路线和固有性质的初步研究。我们还讨论了如何将它们用于广泛的应用，并对这类诱人的二维材料未来面临的挑战和机遇进行了展望。
