Deterministic Placement of Achiral Emitters in Superchiral Fields for Superior Chiral Photoluminescence

IF 9.6 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2025-04-17 DOI:10.1021/acs.nanolett.5c01417

Xiaolin Lu, Yong Tan, Zhiyuan Gao, Tao Ding

引用次数: 0

Abstract

Chiral luminescence holds promise for various applications, but achieving strong, pixelated emission with a large dissymmetry factor (g_lum) for on-chip integration remains challenging. Here we address this challenge by optically growing CdS emitters within the superchiral fields of Au spiral metasurfaces. This precise placement enhances emitter–field interaction, yielding chiral photoluminescence with a g_lum of up to ∼0.5 and an ∼30-fold intensity enhancement. We demonstrate that both the excitation wavelength and emitter location significantly impact chiral luminescence quality, highlighting the critical role of resonant excitation and spatial alignment with superchiral fields. These findings provide crucial guidelines for designing high-performance chiral luminescence devices suitable for on-chip photonic integration.

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超手性光致发光中非手性发光体的确定性放置

手性发光具有多种应用前景，但在片上集成中实现具有大不对称因子（glum）的强像素化发光仍然具有挑战性。在这里，我们通过在金螺旋超表面的超手性场中光学生长CdS发射体来解决这一挑战。这种精确的放置增强了发射器与场的相互作用，产生的手性光致发光的胶密度高达~ 0.5，强度增强~ 30倍。我们证明了激发波长和发射器位置对手性发光质量都有显著影响，突出了共振激发和超手性场空间对准的关键作用。这些发现为设计适用于片上光子集成的高性能手性发光器件提供了重要的指导。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.