CAREER: Disorder Induced Optical Heterogeneity in Solution-based Straight/Branched Nanowires

在这个由实验物理化学（CHE）和电子材料（DMR）项目共同资助的CAREER奖中，圣母大学的Masaru K. Kuno教授和他的研究生和本科生将使用单粒子光谱研究线性和分支半导体纳米线（CdSe， CdTe和PbTe）的光学和电子特性。实验将集中于扫描隧道显微镜（STM）光谱、光致发光激发和单纳米线的荧光间歇性。这项工作的目的是探讨无序（包括相缺陷）、非均质性和周围介质对溶液基纳米线行为的影响。了解线内缺陷与纳米线的光学和电子特性之间的联系将影响半导体纳米线作为光学传感器和光伏电池的进一步发展。拟议的工作与圣母大学本科生和研究生的教育活动相结合。这些活动将导致一系列学生测试的本科生实验的发展，包括构建一个廉价的单分子显微镜。Kuno教授还计划出版一本纳米科学入门教科书。

In this CAREER award, co-funded by the Experimental Physical Chemistry (CHE) and Electronic Materials (DMR) programs, Prof. Masaru K. Kuno of the University of Notre Dame and his graduate and undergraduate students will use single particle spectroscopy to study the optical and electronic properties of linear and branched semiconductor nanowires (CdSe, CdTe, and PbTe). Experiments will focus on scanning tunneling microscopy (STM) spectroscopy, photoluminescence excitation, and the fluorescence intermittency of single nanowires. The aim of this work is to explore the effects of disorder (including phase defects), heterogeneity, and the surrounding medium on the behavior of solution-based nanowires.Understanding the links between intrawire defects and the optical and electronic properties of nanowires will impact the further development of semiconductor nanowires as optical sensors and as photovoltaics. The proposed work is integrated with educational activities involving undergraduate and graduate students at the University of Notre Dame. These activities will lead to the development of a series of student-tested, undergraduate experiments and include the construction of an inexpensive, single-molecule microscope. Prof. Kuno also plans to publish an introductory textbook on nanoscience.