Development of a Spatially Resolved Photoionization Microscope for Chemically Selective Mesoscale Spectroscopy in Organic Photovoltaic Cells

开发用于有机光伏电池化学选择性介观光谱的空间分辨光电离显微镜

• 批准号: 0618477
• 负责人: Oliver Monti
• 金额: $ 47.5万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-08-15 至 2010-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0618477&HistoricalAwards=false
• 关键词: Development; Spatially; Resolved; Photoionization; Microscope

With a Chemistry Research Instrumentation and Facilities :Instrument Development (CRIF:ID) award, Professor Oliver Monti in the Department of Chemistry at the University of Arizona will develop a sensitive scanning photoionization microscope to investigate the electronic structure of heterogeneous interfaces in organic photovoltaic cells. The instrument consists of a Ti:Sapphire laser, microscope, and a new photoelectron detector, in which ultraviolet radiation (266 nm) from a frequency tripled Ti:Sapphire laser (800 nm) is used for multiphoton photoionization in 6-10 eV range. Spatially resolved fluorescence and photoelectron imaging would result from scanning the sample over the stationary focused uv beam.The proposed scanning photoionization microscope is suitable for valence band and photoemission spectroscopy enabling the collection of spatially resolved chemical and electronic information on a submicron length-scale. Important applications include the examination of the valence band structure of organophotovoltaic (OPV) systems, organic/semiconductor interfaces, and potentially single nanoparticles. This should contribute to the basic understanding of molecular processes in organic materials, ultimately improving the engineering of more efficient solar cells.

借助化学研究仪器和设施：仪器开发（CRIF：ID）奖，亚利桑那大学化学系的Oliver Monti教授将开发一种敏感的扫描光电离显微镜，以研究有机光伏细胞中异质界面的电子结构。该仪器由Ti：蓝宝石激光器，显微镜和新的光电子检测器组成，其中使用三倍的Ti：Sapphire Laser（800 nm）的紫外线辐射（266 nm）用于6-10 ev范围内的多光子照相。空间分辨的荧光和光电子成像将是由于在固定的聚焦梁上扫描样品而产生的。拟议的扫描光电离显微镜适用于价带和光发射光谱，从而可以收集在s子上尺寸上的空间分辨化学和电子信息。重要的应用包括检查有机伏洛耐（OPV）系统的价带结构，有机/半导体界面以及潜在的单纳米颗粒。这应该有助于对有机材料中分子过程的基本理解，最终改善更有效的太阳能电池的工程。