EAPSI: Optical Characterization of Atomically-Thin Two-Dimensional Materials as Nanoscale Light Emitters

发光元件广泛应用于计算、传感、生物医学和电信等现代技术、工艺和应用中。由于光与物质之间固有的弱相互作用，存在有源发光器件的基本限制。这自然会导致低效率和笨重的光子器件，与电子设备相比要大得多，器件速度慢，需要更高的功耗，并导致不经济的组件和系统成本。该奖项支持研究原子薄材料和等离子体金属的混合作为纳米级和快速光放大发射器的潜在候选者的研究。这项技术可以实现更快的计算，同时减少当前技术带来的电力消耗，从而为社会带来巨大好处。这项研究将与新加坡南洋理工大学(NTU)破坏性光子技术中心(CDPT)纳米技术和光学光谱领域的著名科学家Cesare Soci博士合作进行。该奖项的目的是探索过渡金属二卤化物(特别是二硫化钼)材料，并展示深亚波长级等离子体增强型发光器件。这项工作将利用乔治华盛顿大学的净室和成像中心来实现纳米级光学天线的制造。接下来，2D材料的等离子体增强发射性能将通过显微光致发光测量和CDPT的时间分辨测量来表征。此外，光谱分析仪还将被用来寻找由宽带光源激励的所制造的腔的共振。该奖项由东亚和太平洋暑期学院项目资助一名美国研究生的暑期研究，由NSF和新加坡国家研究基金会共同资助。

Light emitting components are used widely in modern technologies, processes and applications such as computing, sensing, bio-medical applications, and telecommunication. A fundamental limitation for active light emitting devices exists due to the inherently weak interaction between light with matter. This naturally leads to inefficient and bulky photonic device that are significantly larger compared to electronic counterparts, slow device speeds, require higher power consumption, and result in uneconomical component and system cost. This award supports research to study a hybrid of atomically thin materials and plasmonic metals as a potential candidate for nanoscale and fast light amplification emitter. This technology can have great benefit to society by enabling faster computing while reducing the power consumption incurred by current technologies. This research will be conducted in collaboration with Dr. Cesare Soci, an eminent scientist in the field of nanotechnology and optical spectroscopy at the Center of Disruptive Photonic Technologies (CDPT) at Nanyang Technological University (NTU) in Singapore. It is the aim of this award to explore transition metal dichalcogenides (in particular, molybdenum disulfide) materials and demonstrate deep-sub wavelength scale plasmonic enhanced light emitting devices. This work will utilize cleanroom and imaging center at George Washington University to achieve fabrication of nanoscale optical antennas. Next, the plasmonic enhanced emission performance of the 2D material will be characterized by mirco photoluminescence measurements, and time resolved measurement at CDPT. Also the optical spectrum analyzer will be used to find the resonances of fabricated cavities excited by the broadband source. This award under the East Asia and Pacific Summer Institutes program supports summer research by a U.S. graduate student and is jointly funded by NSF and the National Research Foundation of Singapore.