Ultrastable and Low-Threshold Two-Photon-Pumped Amplified Spontaneous Emission from CsPbBr₃/Ag Hybrid Microcavity.

IF 4.4 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY Nanomaterials Pub Date : 2024-10-10 DOI:10.3390/nano14201622

Shulei Li, Yatao Zhang, Zhiran Zhao, Shiyi Cheng, Zixin Li, Yuanyuan Liu, Quantong Deng, Jun Dai, Yunbao Zheng, Zhenxu Lin

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Abstract

Halide perovskite materials have garnered significant research attention due to their remarkable performance in both photoharvesting photovoltaics and photoemission applications. Recently, self-assembled CsPbBr₃ superstructures (SSs) have been demonstrated to be promising lasing materials. In this study, we report the ultrastable two-photon-pumped amplified stimulated emission from a CsPbBr₃ SS/Ag hybrid microcavity with a low threshold of 0.8 mJ/cm² at room temperature. The experimental results combined with numerical simulations show that the CsPbBr₃ SS exhibits a significant enhancement in the electromagnetic properties in the hybrid microcavity on Ag film, leading to the uniform spatial temperature distribution under the irradiation of a pulsed laser, which is conducive to facilitate the recrystallization process of the QDs and improve their structural integrity and optical properties. This study provides a new idea for the application of CsPbBr₃/Ag hybrid microcavity in photonic devices, demonstrating its potential in efficient optical amplification and upconversion lasers.

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铯硼汞/银混合微腔的超稳定和低阈值双光子泵浦自发放大发射。

卤化物包光体材料在光收集光伏和光发射应用方面都具有卓越的性能，因此备受研究关注。最近，自组装 CsPbBr3 超结构（SSs）被证明是一种很有前途的激光材料。在本研究中，我们报告了 CsPbBr3 SS/Ag 混合微腔在室温下的超稳定双光子泵浦放大受激发射，阈值低至 0.8 mJ/cm2。实验结果与数值模拟相结合表明，CsPbBr3 SS 在银膜混合微腔中的电磁特性显著增强，导致脉冲激光照射下的空间温度分布均匀，有利于促进 QDs 的再结晶过程，改善其结构完整性和光学特性。这项研究为 CsPbBr3/Ag 混合微腔在光子器件中的应用提供了新思路，展示了其在高效光放大和上转换激光器中的潜力。

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

Nanomaterials NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

8.50

自引率

9.40%

发文量

3841

审稿时长

14.22 days

期刊介绍： Nanomaterials (ISSN 2076-4991) is an international and interdisciplinary scholarly open access journal. It publishes reviews, regular research papers, communications, and short notes that are relevant to any field of study that involves nanomaterials, with respect to their science and application. Thus, theoretical and experimental articles will be accepted, along with articles that deal with the synthesis and use of nanomaterials. Articles that synthesize information from multiple fields, and which place discoveries within a broader context, will be preferred. There is no restriction on the length of the papers. Our aim is to encourage scientists to publish their experimental and theoretical research in as much detail as possible. Full experimental or methodical details, or both, must be provided for research articles. Computed data or files regarding the full details of the experimental procedure, if unable to be published in a normal way, can be deposited as supplementary material. Nanomaterials is dedicated to a high scientific standard. All manuscripts undergo a rigorous reviewing process and decisions are based on the recommendations of independent reviewers.