Photoemission yield spectrometer for surfaces and semiconductors

用于表面和半导体的光电发射产率光谱仪

• 批准号: RTI-2018-00559
• 负责人: Perepichka, Dmitrii
• 金额: $ 10.93万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=642228
• 关键词: Photoemission; yield; spectrometer; surfaces; semiconductors

We seek funding to acquire an atmospheric pressure photoelectron yield spectrometer (PEYS) to characterize surfaces, semiconducting films and other advanced materials. PEYS allows “soft” non-destructive measurements of workfunction of metals, conductance band of semiconductors and HOMO of molecular/polymer films and powders. This is becoming a “must have” technology in organic electronics, and would likewise have a transformational effect in many related fields (quantum dots, self-assembled monolayers, etc). However, no such instruments are available in Canada. The current alternative is a combination of electrochemical and ultra-violet photoelectron spectroscopy (UPS) measurements which are significantly more complicated. Furthermore, there is a significant ambiguity in the energy levels they provide, and these are strongly affected by the environment (electrolyte or ultra-high vacuum). The instrument will become a central departmental materials characterization facility, which is used extensively by several dozens research groups at McGill and other Quebec universities (via Quebec Center for Advanced Materials -CQMF). We estimate that at least 10-20 students will receive hands-on training in the use of PEYS each year, and the CQMF research associate (P. Fiurasek) will perform sample measurements for many other academic groups throughout Canada.

我们寻求资金来获得一个大气压光电子产额光谱仪（PEYS）来表征表面，半导体薄膜和其他先进材料。PEYS允许对金属的功函数、半导体的电导带和分子/聚合物薄膜和粉末的HOMO进行“软”无损测量。这正在成为有机电子领域的“必备”技术，同样也会在许多相关领域（量子点、自组装单层膜等）产生变革性影响。然而，在加拿大没有这样的仪器。目前的替代方案是电化学和紫外光电子能谱（UPS）测量的结合，这要复杂得多。此外，它们提供的能级存在明显的模糊性，并且这些能级受到环境（电解质或超高真空）的强烈影响。该仪器将成为一个中心部门材料表征设施，被麦吉尔大学和其他魁北克大学的几十个研究小组广泛使用（通过魁北克先进材料中心-CQMF）。我们估计每年至少有10-20名学生将接受使用PEYS的实践培训，CQMF研究助理（P. Fiurasek）将为加拿大各地的许多其他学术团体进行样本测量。