Engineering light emission of two-dimensional materials in both the weak and strong coupling regimes
Engineering light emission of two-dimensional materials in both the weak and strong coupling regimes
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DOI：
10.1515/nanoph-2017-0041
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发表时间：
2017
期刊：
影响因子：
7.5
通讯作者：
M. Brotons-Gisbert;J. Martínez‐Pastor;G. Ballesteros;B. Gerardot;J. Sánchez-Royo
中科院分区：
文献类型：
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作者：
M. Brotons-Gisbert;J. Martínez‐Pastor;G. Ballesteros;B. Gerardot;J. Sánchez-Royo
摘要二维(2D)材料在光电子学、光子学和量子技术中有着广阔的应用前景。然而，它们固有的低吸光率限制了它们的性能，潜在的设备必须经过精确的设计才能实现最佳操作。在这里，我们应用基于传输矩阵的源项方法来优化二维材料和相关器件在弱耦合和强耦合区域的光吸收和发射。所实现的分析模型准确地解释了石墨烯和MoS2等典型2D材料的实验结果。该模型已经扩展到提出了通过MoS2单层中的激子复合、任意取向的偶极单层的光提取以及2D材料中的单光子发射来优化光发射的结构。此外，它还成功地应用于从MoS_2微腔实验中提取激子-腔相互作用参数。本模型为设计基于二维半导体的新型光电子器件提供了一个强大而通用的工具，例如量子光源和偏振子激光器。
Abstract Two-dimensional (2D) materials have promising applications in optoelectronics, photonics, and quantum technologies. However, their intrinsically low light absorption limits their performance, and potential devices must be accurately engineered for optimal operation. Here, we apply a transfer matrix-based source-term method to optimize light absorption and emission in 2D materials and related devices in weak and strong coupling regimes. The implemented analytical model accurately accounts for experimental results reported for representative 2D materials such as graphene and MoS2. The model has been extended to propose structures to optimize light emission by exciton recombination in MoS2 single layers, light extraction from arbitrarily oriented dipole monolayers, and single-photon emission in 2D materials. Also, it has been successfully applied to retrieve exciton-cavity interaction parameters from MoS2 microcavity experiments. The present model appears as a powerful and versatile tool for the design of new optoelectronic devices based on 2D semiconductors such as quantum light sources and polariton lasers.