Multi-Exciton Dissociation in Quantum Dots by Ultrafast Charge Transfer to Adsorbates

通过超快电荷转移至吸附物实现量子点中的多激子解离

• 批准号: 0848556
• 负责人: Tianquan Lian
• 金额: $ 40.81万
• 依托单位: Emory University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-01 至 2012-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0848556&HistoricalAwards=false
• 关键词: Multi; Exciton; Dissociation; Quantum; Dots

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).In this award, funded by the Experimental Physical Chemistry Program of the Chemistry Division, Prof. Tianquan Lian of Emory University and research group will employ transient absorption and photoluminescence spectroscopies to explore ultrafast electron transfer from quantum dots. The goal of these experiments is to develop a better understanding of the multiple exciton (electron-hole pair) dissociation as well as the multiple exciton generation processes that are proposed to occur in certain nanoscale semiconductor structures.This research is relevant to many potential applications for nanoparticles, including solar energy conversion, photocatalysis, nanoscale sensors, and molecular electronics. In addition to the broader scientific impact of the proposed research, Prof. Lian will work with undergraduates from the southeast region to become involved in science. His efforts will include providing summer research positions, seminar visits, collaborative research projects, and regional conferences.

该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。在这个由化学学部实验物理化学项目资助的奖项中，埃默里大学的连天全教授和他的研究小组将利用瞬态吸收和光致发光光谱来探索量子点的超快电子转移。这些实验的目的是为了更好地理解多激子（电子-空穴对）解离以及在某些纳米级半导体结构中提出的多激子产生过程。这项研究与纳米颗粒的许多潜在应用有关，包括太阳能转换、光催化、纳米传感器和分子电子学。除了拟议的研究具有更广泛的科学影响外，廉教授还将与东南地区的本科生一起参与科学研究。他的努力将包括提供夏季研究职位、研讨会访问、合作研究项目和区域会议。