Color-Tunable Lead Halide Perovskite Single-Mode Chiral Microlasers with Exceptionally High glum

IF 9.6 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2024-10-03 DOI:10.1021/acs.nanolett.4c03838

Haotian Gu, Haoyuan Xu, Chao Yang, Yifan Feng, Guanfeng Gao, Robert L. Z. Hoye, Xiaowen Hu, Lakshminarayana Polavarapu, Guofu Zhou, Xiao-Fang Jiang

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Abstract

Chiral microlasers hold great promise for optoelectronics from integrated photonic devices to high-density quantum information processing. Despite significant progress in lead-halide perovskite emitters, chiral lasing with high dissymmetry factors (g_lum) has not yet been realized. Here, we demonstrate chiral single-mode microlasers with exceptional stability and tunable emission across the visible range by combining CsPbCl_xBr_3-x perovskite microrods (MRs) with a cholesteric liquid crystal (CLC) layer. The MRs lase via a whispering gallery mode (WGM) microcavity and confer chirality through the encapsulated CLC layer, thus exhibiting circularly polarized lasing with dissymmetry factors reaching 1.62. Importantly, we demonstrate wavelength-tunable high dissymmetry chiral lasers in a broad spectral range by tuning the halide composition and using CLC layers with the desired photonic bandgap (PBG). This facile approach to generate chiral lasing not only is applicable to semiconductor nano- and microcrystals but also paves the way for potential integration into nanoscale photonic devices.

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颜色可调的卤化铅包光体单模手性微激光器具有超高光晕

手性微激光器为光电子学（从集成光子器件到高密度量子信息处理）带来了巨大的发展前景。尽管在铅卤化物包晶发光体方面取得了重大进展，但具有高不对称系数（glum）的手性激光尚未实现。在这里，我们通过将 CsPbClxBr3-x 包晶微晶（MRs）与胆甾液晶（CLC）层相结合，展示了在可见光范围内具有优异稳定性和可调发射的手性单模微激光器。MRs 通过whispering gallery mode (WGM) 微腔进行激光，并通过封装的 CLC 层赋予手性，从而表现出圆极化激光，其不对称系数达到 1.62。重要的是，我们通过调整卤化物成分和使用具有所需光子带隙 (PBG) 的 CLC 层，在宽光谱范围内展示了波长可调的高不对称手性激光器。这种产生手性激光的简便方法不仅适用于半导体纳米和微晶，还为可能集成到纳米级光子器件中铺平了道路。

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.