当前位置: X-MOL 学术Nat. Commun. › 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.)
Scalable photonic sources using two-dimensional lead halide perovskite superlattices.
Nature Communications ( IF 14.7 ) Pub Date : 2020-01-20 , DOI: 10.1038/s41467-019-14084-3
Jakub Jagielski , Simon F. Solari , Lucie Jordan , Declan Scullion , Balthasar Blülle , Yen-Ting Li , Frank Krumeich , Yu-Cheng Chiu , Beat Ruhstaller , Elton J. G. Santos , Chih-Jen Shih

Miniaturized photonic sources based on semiconducting two-dimensional (2D) materials offer new technological opportunities beyond the modern III-V platforms. For example, the quantum-confined 2D electronic structure aligns the exciton transition dipole moment parallel to the surface plane, thereby outcoupling more light to air which gives rise to high-efficiency quantum optics and electroluminescent devices. It requires scalable materials and processes to create the decoupled multi-quantum-well superlattices, in which individual 2D material layers are isolated by atomically thin quantum barriers. Here, we report decoupled multi-quantum-well superlattices comprised of the colloidal quantum wells of lead halide perovskites, with unprecedentedly ultrathin quantum barriers that screen interlayer interactions within the range of 6.5 Å. Crystallographic and 2D k-space spectroscopic analysis reveals that the transition dipole moment orientation of bright excitons in the superlattices is predominantly in-plane and independent of stacking layer and quantum barrier thickness, confirming interlayer decoupling.

中文翻译:

使用二维卤化钙钛矿超晶格的可扩展光子源。

基于半导体二维(2D)材料的微型光子源提供了超越现代III-V平台的新技术机遇。例如,量子受限的二维电子结构将激子跃迁偶极矩平行于表面平面对齐,从而将更多的光与空气耦合,从而产生了高效的量子光学器件和电致发光器件。它需要可伸缩的材料和工艺来创建解耦的多量子阱超晶格,其中单个2D材料层被原子薄的量子势垒隔离。在这里,我们报告解耦的多量子阱超晶格由卤化钙钛矿的胶体量子阱组成,具有前所未有的超薄量子势垒,可屏蔽6.5范围内的层间相互作用。
更新日期:2020-01-22
down
wechat
bug