US-Sri Lanka Cooperative Research: Study of Dye-Sensitized Semiconductor Nanostructures

项目描述：该奖项支持乔治亚州亚特兰大佐治亚州立大学（GSU）物理与天文系Unil Perera博士与斯里兰卡康提基础科学研究所（IFS）物理系Keerthi Tennakone博士的联合研究项目。pi将研究复合纳米晶体材料，重点研究基于染料敏化（DS）半导体纳米结构的器件。Tennakone博士在IFS的团队正在对这些DS半导体纳米结构进行研究，重点是可见光应用（太阳能电池），而红外应用尚未研究。GSU小组一直在研究红外（IR）探测器，开发了新的红外探测机制，并致力于开发各种波长的红外探测器。佩雷拉博士获得了美国国家科学基金会（NSF）的资助，用于开发异质结界面工作函数内部光电发射（HEIWIP）探测器。红外探测器的研究与太阳能电池的研究有着密切的联系。结合双方的专业知识，期望通过增强这些DS半导体纳米结构中的红外吸收和转换，可以提高太阳能电池的性能。我们将研究不同类型的染料的红外吸收行为，以获得这些低成本器件的最佳性能。不同染料的红外吸收研究将允许GSU小组开发另一种类型的红外探测器，特别是低成本应用。范围：该项目的目标是推进太阳能电池的研究，并提供在室温或接近室温下工作的新型低成本红外探测器。提出的研究结果将提高对探测器的理解，并形成下一代探测器的基础。它将使GSU在从事半导体器件领域前沿研究的同时，让斯里兰卡的年轻科学家参与到宝贵的研究经验中来。这将对知识、物理和工程教育的发展产生重大影响，并将对两国的科学技术作出重大贡献。这些合作还将确保在商业和政府实验室，特别是在斯里兰卡方面，有效地向新兴的高科技应用转移。

0322355PereraDescription: This award supports a joint research project between Dr. Unil Perera, Department of Physics and Astronomy, Georgia State University (GSU), Atlanta, Georgia and Dr. Keerthi Tennakone, Department of Physics, Institute of Fundamental Sciences (IFS), Kandy, Sri Lanka. The PIs will investigate composite nanocrystalline material, focusing on devices based on dye-sensitized (DS) semiconductor nanostructures. Dr. Tennakone's team at IFS is conducting research on these DS semiconductor nanostructures, with a focus on the visible light applications (solar cells) while IR applications have not been studied. The GSU group has been studying infrared (IR) detectors, has developed novel IR detection mechanisms and is working on developing IR detectors for various wavelengths. Dr. Perera has an NSF grant for the development of heterojunction interfacial workfunction internal photoemission (HEIWIP) detectors. This work on IR detectors has a very close connection to the solar cell research. By combining the expertise on both sides, it is expected that the solar cell performance could be improved by enhancing the IR absorption and conversion in these DS semiconductor nanostructures. Different types of dyes will be studied to explore the IR absorption behavior and to obtain the optimum performance of these low cost devices. The IR absorption studies of different dyes will allow the GSU group to develop another type of an IR detector especially for low cost applications. Scope: The project's goal is to advance solar cell research and to provide novel low cost infrared detectors operating at or near room temperature. The results of the proposed research will improve the understanding of detectors and form the basis for the next generation of detectors. It will enable GSU to involve Sri Lankan junior scientists in a valuable research experience while working in cutting edge research in the semiconductor device areas. This will impact significantly the advancement of knowledge, physics and engineering education, and will make a significant contribution to both nations' science and technology. The collaborations will also ensure effective transfer to emerging high-tech applications both in commercial and government laboratories and especially on the Sri Lankan side.