Large-Area Perovskite Nanocrystal Metasurfaces for Direction-Tunable Lasing

IF 11.3 1区化学 Q1 CHEMISTRY, PHYSICAL

ACS Catalysis Pub Date : 2024-09-25 DOI:10.1021/acs.nanolett.4c03921

Nanli Mou, Bing Tang, Bowen Han, Jingyue Yu, Delin Zhang, Zichun Bai, Mou Zhong, Biye Xie, Zhaoyu Zhang, Shikai Deng, Andrey L. Rogach, Jingtian Hu, Jun Guan

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引用次数: 0

Abstract

Perovskite nanocrystals (PNCs) are attractive emissive materials for developing compact lasers. However, manipulation of PNC laser directionality has been difficult, which limits their usage in photonic devices that require on-demand tunability. Here we demonstrate PNC metasurface lasers with engineered emission angles. We fabricated millimeter-scale CsPbBr₃ PNC metasurfaces using an all-solution-processing technique based on soft nanoimprinting lithography. By designing band-edge photonic modes at the high-symmetry X point of the reciprocal lattice, we achieved four linearly polarized lasing beams along a polar angle of ∼30° under optical pumping. The device architecture further allows tuning of the lasing emission angles to 0° and ∼50°, respectively, by adjusting the PNC thickness to shift other high-symmetry points (Γ and M) to the PNC emission wavelength range. Our laser design strategies offer prospects for applications in directional optical antennas and detectors, 3D laser projection displays, and multichannel visible light communication.

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用于定向可调激光的大面积 Perovskite 纳米晶体金属表面

过氧化物纳米晶体（PNC）是一种极具吸引力的发射材料，可用于开发紧凑型激光器。然而，操纵 PNC 激光的方向性一直很困难，这限制了它们在需要按需调谐的光子设备中的应用。在这里，我们展示了具有工程发射角的 PNC 超表面激光器。我们采用基于软纳米压印光刻技术的全溶液加工技术，制造出毫米级 CsPbBr3 PNC 元表面。通过在倒易点阵的高对称 X 点设计带边光子模式，我们在光泵浦条件下实现了沿极角 ∼ 30° 的四个线性偏振激光束。通过调整 PNC 厚度，将其他高对称点（Γ 和 M）移至 PNC 发射波长范围，该器件结构还可进一步将激光发射角分别调至 0° 和 ∼ 50°。我们的激光设计策略为定向光学天线和探测器、三维激光投影显示和多通道可见光通信等领域的应用提供了前景。

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来源期刊

ACS Catalysis CHEMISTRY, PHYSICAL-

CiteScore

20.80

自引率

6.20%

发文量

1253

审稿时长

1.5 months

期刊介绍： ACS Catalysis is an esteemed journal that publishes original research in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. It offers broad coverage across diverse areas such as life sciences, organometallics and synthesis, photochemistry and electrochemistry, drug discovery and synthesis, materials science, environmental protection, polymer discovery and synthesis, and energy and fuels. The scope of the journal is to showcase innovative work in various aspects of catalysis. This includes new reactions and novel synthetic approaches utilizing known catalysts, the discovery or modification of new catalysts, elucidation of catalytic mechanisms through cutting-edge investigations, practical enhancements of existing processes, as well as conceptual advances in the field. Contributions to ACS Catalysis can encompass both experimental and theoretical research focused on catalytic molecules, macromolecules, and materials that exhibit catalytic turnover.