Photonically Strongly Coupled Organic/Inorganic Nanocomposites for Light Emitter and Photovoltaic Applications

“Photonically Strongly Coupled Organic/Inorganic Nanocomposites for LightEmittance and Photovoltaic Applications”（ECCS-0725740）在这项研究中，基本的光子现象与纳米尺度上的新型有机/无机插层介质相结合，目的是为从紧凑型发光体到新型光致发光材料的应用获得异常强烈的光-物质相互作用。这项工作的智力价值在于创造有机-无机混合光子材料，其电子激发耦合超出微扰机制，以增强光-物质相互作用，这超过了目前的光学器件。这是通过共振相互作用材料的特殊组合来实现的，利用两类材料，每一类材料都具有显着的光学振荡器强度，但在高度对比的电子环境中。混合纳米级介质的有机子组分由J-聚集体聚合物形成，所述聚合物表现出集中在可见光和近红外的窄光谱范围内的异常吸收和发射。与有机组分光谱匹配的是无机胶体II-VI族半导体量子点，其分别通过激发和电荷转移提供到有机和外部电界面的路径。这种插层混合介质的关键物理特性是共振电磁激发转移，在室温下，作为两个子系统内的电子能量转移通道，其效率可接近100%。这项工作的更广泛影响是有可能将异常高性能的全新有源光子材料插入到功能性光电器件中，如光发射器和光电子器件，在光谱的可见光到近红外部分中进行高光谱扩展。该设备的目标是寻找新的应用空间，目前无法访问或启用这些技术的无机和有机半导体，分别通过传统的方法，包括视觉艺术。基于无机和有机材料/器件的科学家，桥接了有源光学技术的两个相当独立的分支，提供了一个新的棱镜，以查看新兴光子技术的协同作用和愿景的机会，以及跨学科新一代技术人员的培训。创新，结构灵活和空间可扩展的光子材料的主题也提供了一个很好的工具，用于外展和连接到科学，包括本科生的实验室经验和GK-12的教学辅助工具，后者利用布朗大学优秀的外展基础设施。

"Photonically Strongly Coupled Organic/Inorganic Nanocomposites for LightEmitter and Photovoltaic Applications" (ECCS-0725740)In this research, fundamental photonic phenomena are combined with new types of organic/inorganic intercalated media on the nanoscale, with the aim to derive exceptionally strong light-matter interaction for applications ranging from compact light emitters to novel photovoltaics. The intellectual merit of the work lies in creating organic-inorganic hybrid photonic materials whose electronic excitations couple beyond the perturbative regime for enhanced light- matter interaction, which exceeds that in present optical devices. This is accomplished by special combination of resonantly interacting materials, exploiting two classes of material which each possess significant optical oscillator strengths, but in a highly contrasting electronic environment. The organic subcomponent of the hybrid nanoscale media is formed from J-aggregate polymers which exhibit exceptional absorption and emission concentrated in narrow spectral ranges across the visible and near infrared. Spectrally matching the organic components are inorganic colloidal II-VI semiconductor quantum dots, which provide pathways via excitation and charge transfer to the organic and external electrical interfaces, respectively. The key physical feature of the intercalated hybrid medium is resonant electromagnetic excitation transfer, which can have near 100% efficiency as an electronic energy transfer channel within the two subsystems, at room temperature.The broader impact of the proposed work is the potential to insert exceptionally high performance entirely new active photonic material into functional optoelectronic devices, such as light emitters and photovoltaics, spread hyperspectrally across the visible into the near IR portions of the spectrum. The device goals aim to search for novel application spaces presently not accessible or enabled by conventional approaches to these technologies by inorganic and organic semiconductors, respectively, including visual arts. Scientifically, bridging the two rather separate branches of active optical technologies, based on inorganic and organic materials/devices, offers a new prism to view opportunities for synergy and vision to emerging photonics technologies, as well as training of interdisciplinary new generation of technologists. The subject matter of innovative, and structurally flexible and spatially extendable photonic materials offers also an excellent vehicle for outreach and connection to science, including lab experience for undergraduates and teaching aids for GK-12, the latter exploiting Brown University's excellent outreach infrastructure.