论文标题
CMOS基于钙钛矿杂种集成兼容的高性能纳米质
CMOS compatible high-performance nanolasing based on perovskite-SiN hybrid integration
论文作者
论文摘要
硅光子学中的连贯的光源是长期以来的圣杯，因为基于硅的材料具有间接的带隙。实现此类来源的传统策略，例如异质光子整合，应变工程和非线性过程在技术上要求。在这里，我们演示了钙钛矿纳米晶体和硝酸硅纳米束腔的混合激光装置。与常规悬浮液相比，我们在固体底物上构造了Sin Photonic Crystal Naonobeam腔，具有显着改善的热和机械稳定性。此外，在罪恶之上添加一个PMMA包容层可以显着增强腔模式的Q因子。通过将钙钛矿纳米晶体分散为PMMA层中的发射器，我们在激光阈值，线宽和模式体积方面获得了高性能相干排放。我们的工作提供了一种令人信服的方法，可以根据硅光子学的成熟平台创建解决方案处理的主动集成光子设备，用于光学信息科学和光子量子技术中的应用。
Coherent light sources in silicon photonics are the long-sought holy grail because silicon-based materials have indirect bandgap. Traditional strategies for realizing such sources, e.g., heterogeneous photonic integration, strain engineering and nonlinear process, are technologically demanding. Here, we demonstrate a hybrid lasing device composing of perovskite nanocrystals and silicon nitride nanobeam cavity. We fabricate SiN photonic crystal naonobeam cavities on a solid substrate with significantly improved thermal and mechanical stabilities compared to conventional suspended ones. In addition, adding a PMMA-encapsulation layer on top of the SiN can significantly boost the Q-factor of the cavity mode. By dispersing perovskite nanocrystals as emitters in the PMMA layer, we obtained high-performance coherent emissions in terms of lasing threshold, linewidth and mode volumes. Our work offers a compelling way of creating solution-processed active integrated photonic devices based on the mature platform of silicon photonics for applications in optical information science and photonic quantum technology.
