RUI: Acquisition of an X-ray Photoelectron Spectroscopy System for Materials Science Research and Undergraduate Education

该奖项由主要研究仪器项目和材料研究仪器项目授予威斯康星大学Eau Claire分校，为购买用于研究和本科教育和培训的x射线光电子能谱系统提供部分支持。该仪器将用于研究半导体、薄膜和金属合金的物理和化学。将研究几种不同的系统。这些包括：1)化合物IV-IV半导体的电子、化学和结构特性，包括钝化、氧化、氧氮化和金属化；2)通常用于氮化镓和氮化铟薄膜生长的分子前体的化学，以及由这些前体产生的分子碎片的化学；3)半导体上金属薄膜的生长机制和结构；以及4)金属合金和薄膜的腐蚀过程。由于本科生研究是威斯康星大学Eau Claire分校教育体系的重要组成部分，学生们将使用这种新工具进行研究。它将用于课程作业，并将用于材料研究方面的教育和培训学生。该奖项由主要研究仪器计划和材料研究仪器计划授予威斯康星大学，为购买用于研究和本科教育和培训的x射线光电子能谱(XPS)系统提供部分支持。半导体、金属和绝缘体是使微电子芯片成为可能的材料。例如，几乎所有的计算机芯片都是由硅制成的。例如，发光二极管用于许多消费电子产品，并越来越多地用于汽车工业和道路标牌，以及构成激光打印机和光盘播放机核心的二极管激光器。计算机芯片和电光器件的成功制造需要对两种材料之间界面的物理和化学以及这些材料表面发生的基本过程有详细的了解。因此，表面性质和组成对制造有用的器件很重要。X射线光电子能谱(XPS)是一种提供表面组成信息的技术，能够提供有关表面原子存在的“化学状态”的信息。该仪器将用于：1)研究半导体和金属表面，以及这两种材料的不同表面成分如何影响两种不同材料之间形成的界面；2)跟踪与材料生长薄膜相关的表面化学反应，以及如何在半导体和金属表面进行蚀刻反应；以及3)研究表面成分在薄膜生长和蚀刻过程中如何影响表面结构和形貌。本科生，包括来自物理科学和生命科学的学生，将参与所有研究项目，并将操作和帮助维护新仪器，作为他们与教师研究导师合作研究项目的一部分。

This award from the Major Research Instrumentation program and the Instrumentation for Materials Research Program to the University of Wisconsin-Eau Claire provides partial support for the acquisition of a x-ray photoelectron spectroscopy system for research and undergraduate education and training. The instrument will be used to investigate the physics and chemistry of semiconductors, thin films, and metallic alloys. Several different systems will be studied. These include: 1) the electronic, chemical, and structural properties of compound IV-IV semiconductors, including the passivation, oxidation, oxynitridation and metallization; 2) the chemistry of the molecular precursors typically used in gallium-nitride and indium-gallium-nitride film growth, as well as the chemistry of the molecular fragments from such precursors; 3) the growth mechanisms and structures of thin metal films on semiconductors; and 4) corrosion processes of metal alloys and thin films. Since undergraduate research is a critical component of the educational system at the University of Wisconsin-Eau Claire, students will perform research with the new instrument. It will be used in course work and will be used to educate and train students in materials research.This award from the Major Research Instrumentation program and the Instrumentation for Materials Research Program to the University of Wisconsin-Eau Claire provides partial support for the acquisition of an x-ray photoelectron spectroscopy (XPS) system for research and undergraduate education and training. Semiconductors, metals, and insulators are the materials that make microelectronic chips possible. Nearly all computer chips, for example, are fabricated from silicon. Similar materials and used in electro-optic devices, such as light-emitting diodes used in many consumer electronics and increasingly in the automotive industry and roadway signing, and diode lasers, which form the heart of laser printers and compact disc players. The successful fabrication of computer chip and electro-optic devices requires a detailed understanding of the physics and chemistry of the interface between two materials, as well as fundamental processes occurring on the surface of these materials. Surface properties and composition are therefore important to the fabrication of useful devices. X-ray photoelectron spectroscopy (XPS) is a technique that provides information about surface composition and is capable of providing information about the "chemical state" in which surface atoms exist. The instrument will be used to: 1) investigate semiconductor and metal surfaces, and how varying surface composition of either material influences the interface that forms between two dissimilar materials; 2) follow surface chemical reactions relevant to growing thin films of materials and how etching reactions proceed at semiconductor and metal surfaces; and 3) study how surface composition influences surface structure and morphology during film growth and etching. Undergraduate students, including students from physical sciences as well as life sciences, will be involved in all research projects and will operate and help to maintain the new instrument as part of their collaborative research projects with faculty research mentors.