CAREER: Origins and Applications of Optical Anisotropies in Organic Photonics

职业：有机光子学中光学各向异性的起源和应用

• 批准号: 1454260
• 负责人: Jon Schuller
• 金额: $ 50.02万
• 依托单位: University of California-Santa Barbara
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-05-01 至 2020-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1454260&HistoricalAwards=false
• 关键词: CAREER; Origins; Applications; Optical; Anisotropies

Non-technical Description: Semiconductor materials are the foundation of modern photonics, or light-manipulating technologies (e.g. lasers, solar cells). Conventional semiconductors such as silicon form crystals, often with isotropic optical properties. Organic materials, such as plastics, provide an alternative low-cost, light-weight, and flexible semiconductor system. These materials comprise highly asymmetric molecules that assemble into complex structures. As a result, they often exhibit highly anisotropic optical properties. The research component of this CAREER award is to study the origins and applications of these optical anisotropies. Novel measurement methods of optical anisotropies help to provide fundamental insight into the complex optical properties of organic materials. In turn, this project exploits optical anisotropies to enhance the performance of organic photonic devices. These scientific investigations are complemented by a variety of integrated education and outreach objectives. A new outreach initiative, The Art of Science, explores intersections between art and science. Students turn the products of their research into works of art for exhibition in public venues, including the Santa Barbara Museum of Art. This initiative encourages science literacy and appreciation through aesthetics, and promotes science as a creative endeavor.Technical Description: Organic materials used in photonic devices often self-assemble into highly oriented morphologies, leading to huge optical anisotropies. The objective of this CAREER project is to elucidate the origins and applications of these anisotropies. The approach is to (1) develop new optical methods for characterizing anisotropies based on resolving the photon momentum vector; (2) identify distinct temporal and spectral signatures of intra- and inter-molecular luminescence; (3) quantify absorption anisotropies that challenge currently prevailing models of organic optical constants; and (4) integrate oriented organics with photovoltaic light-trapping architectures that exploit anisotropies to enhance thin-film absorption. Fundamental materials studies provide new understanding of inter-molecular excitations - critical, but poorly understood intermediaries in organic light emitting diodes and photovoltaics. Investigations of photonic architectures delineate new approaches for enhancing oriented light-matter interactions through electromagnetics coupling.

非技术描述：半导体材料是现代光子学或光操纵技术（例如激光器，太阳能电池）的基础。传统的半导体如硅形成晶体，通常具有各向同性的光学性质。有机材料，例如塑料，提供了一种替代的低成本、重量轻且柔性的半导体系统。这些材料包括组装成复杂结构的高度不对称分子。因此，它们通常表现出高度各向异性的光学特性。这个CAREER奖的研究部分是研究这些光学各向异性的起源和应用。光学各向异性的新的测量方法有助于提供基本的洞察有机材料的复杂光学性质。反过来，该项目利用光学各向异性来提高有机光子器件的性能。这些科学调查得到了各种综合教育和外联目标的补充。 一个新的外展计划，科学的艺术，探索艺术和科学之间的交叉点。学生将研究成果转化为艺术品，在圣巴巴拉艺术博物馆等公共场所展出。通过美学来鼓励科学素养和欣赏，并促进科学作为一种创造性的奋进。技术描述：用于光子器件的有机材料通常会自组装成高度定向的形态，导致巨大的光学各向异性。这个项目的目标是阐明这些各向异性的起源和应用。该方法是：（1）发展新的光学方法来表征各向异性的基础上解决光子动量矢量;（2）确定不同的时间和光谱特征的分子内和分子间发光;（3）量化吸收各向异性，挑战目前流行的模型的有机光学常数;以及（4）将取向有机物与利用各向异性以增强薄膜吸收的光伏光捕获结构集成。基础材料的研究提供了新的理解分子间的激发-关键的，但了解不多的有机发光二极管和photopolics中介。光子结构的研究描绘了通过电磁耦合增强定向光-物质相互作用的新方法。