Multifunctional Molecular Interfaces to Metal Oxide Surfaces

金属氧化物表面的多功能分子界面

• 批准号: 0911543
• 负责人: Robert Hamers
• 金额: $ 60.36万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-01 至 2013-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0911543&HistoricalAwards=false
• 关键词: Multifunctional; Molecular; Interfaces; Metal; Oxide

Professor Robert Hamers of the University of Wisconsin-Madison is supported by the Analytical and Surface Chemistry Program in the Division of Chemistry to investigate the use of molecular layers as electronic interfaces to oriented single crystals of TiO2 in the anatase and rutile forms, and extending to other oxides including SrTiO3. Studies will focus primarily on single crystals but will also use nanocrystalline materials as appropriate. The studies are aimed at achieving a fundamental understanding of how differences in surface structure impact the resulting molecular layers and the electronic properties of the interfaces. The structural and electronic properties of these grafted layers on well-defined single crystals of oxide semiconductors will be evaluated using a variety of chemical, structural, electronic, and spectroelectrochemical probes. Oxide semiconductors are the basis for several new and emerging types of dye-sensitized solar cells, quantum dot solar cells, and photocatalysis devices. The ability to integrate these materials with molecular and nanostructured sensitizers could lead to the development of inexpensive solar cells made by simple wet-chemical methods. The educational activities include mentoring of 8th grade students on science projects in renewable energy, summer internships for high school students, and year-round research opportunities for undergraduates and graduate students.

威斯康星大学麦迪逊分校的罗伯特·哈默斯教授得到化学系分析和表面化学计划的支持，研究利用分子层作为电子界面来定向形成锐钛矿型和金红石型的二氧化钛单晶，并延伸到包括钛酸锶在内的其他氧化物。研究将主要集中在单晶上，但也将酌情使用纳米晶材料。这些研究的目的是从根本上了解表面结构的差异如何影响所产生的分子层和界面的电子性质。将使用各种化学、结构、电子和光谱电化学探针来评估这些在定义明确的氧化物半导体单晶上的接枝层的结构和电子性质。氧化物半导体是几种新型和新兴类型的染料敏化太阳能电池、量子点太阳能电池和光催化器件的基础。将这些材料与分子和纳米结构敏化剂相结合的能力可能会导致通过简单的湿化学方法制造廉价太阳能电池的发展。教育活动包括辅导8年级学生的可再生能源科学项目，为高中生提供暑期实习，以及为本科生和研究生提供全年研究机会。