当前位置:
X-MOL 学术
›
Mater. Today Chem.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
金属卤化物钙钛矿核@壳纳米晶体和纳米复合材料的研究现状与前景
Materials Today Chemistry
(
IF
6.7
)
Pub Date : 2021-03-11
, DOI:
10.1016/j.mtchem.2021.100424
Manav R. Kar
,
Smaranika Ray
,
Biplab K. Patra
,
Saikat Bhaumik
金属卤化物钙钛矿纳米晶体(NCs)由于其独特的固有光物理性质而显示出巨大的进步,这驱使它们在发光二极管,太阳能电池,光电探测器,激光,生物成像等领域中得到潜在的应用。但是,钙钛矿型NC在环境大气中的不稳定性,特别是在存在湿气的情况下,是商业应用之前需要克服的主要挑战之一。钙钛矿的稳定性可以通过形成保护壳材料来改善,该壳材料不仅可以防止钙钛矿进一步降解,而且还可以产生新的材料性能。核@壳半导体纳米结构由于能够通过改变其尺寸和组成来调节光学性能而在全世界引起了极大的关注。众所周知,这种核壳NC合成是一种独特的技术,可以进一步改善晶体结构和光稳定性。已经预料到,这些NC的优势最终可以在各种光电和生物成像应用中实现。这篇综述文章简要介绍了具有不同类型脱壳材料的金属卤化物钙钛矿核@壳型NC的最新进展报告,例如金属氧化物,高带隙金属卤化物钙钛矿,金属硫属化物,金属有机骨架和聚合物。此外,我们还讨论了一种新型的具有金属硫属化物核和金属卤化物钙钛矿壳的核@壳纳米材料。这篇评论主要关注各种类型的核@壳NCs生长过程及其相关的光物理性质的最新分析,特别是它们的发射特性和相应的稳定性。最后,我们强调了在核心@壳NC的合成过程中面临的一些主要挑战,以及在不同的光电和生物成像应用中进一步发展的未来方面。
"点击查看英文标题和摘要"
State of the art and prospects of metal halide perovskite core@shell nanocrystals and nanocomposites
Metal halide perovskite nanocrystals (NCs) have shown tremendous progress because of their unique inherent photophysical properties, which driven them for potential application in the fields of light-emitting diodes, solar cells, photodetectors, lasing, bioimaging, and so on. However, the instability of perovskite NCs in ambient atmosphere, especially in presence of moisture, is one of the major challenges that need to overcome before their commercial applications. The stability of perovskites can be improved by forming a protective shell material that not only prevents them from further degradation but also generates new materials properties. Core@shell semiconducting nanostructures have attracted immense attention worldwide because of their ability to tune optical properties by varying their size and composition. This core@shell NCs synthesis is known to be a unique technique that further improves the crystal structure and photostability. It has been anticipated that the advantages of these NCs can be eventually realized in various optoelectronic and bioimaging applications. This review article provides a brief description of a recent progress report on metal halide perovskite core@shell NCs with different types of shelling materials, such as metal oxides, high bandgap metal halide perovskites, metal-chalcogenides, metal-organic frameworks, and polymers. In addition, we have also discussed a new type of core@shell nanomaterials with metal chalcogenides core and metal halide perovskite shell. This review mainly focuses on the up-to-date analysis of various types of core@shell NCs growth processes, and their associated photophysical properties, especially their emission properties, and corresponding stability. Finally, we emphasize some of the major challenges facing during the synthesis of core@shell NCs, and future aspects for further development in different optoelectronic and bioimaging applications.
更新日期:2021-03-11