A new STEHM holder for optoelectronic measurements

该提案建议维多利亚大学和日立高科技加拿大公司的研究人员建立伙伴关系。（日立加拿大）开发一种用于扫描透射电子显微镜（STEM）的新型保持器。这种新的保持器将允许在STEM内实施光学和电激发。该系统将由维多利亚大学的研究人员与日立加拿大公司的工程师密切合作设计和建造。该保持器将被测试以表征纳米结构薄膜CdTe/CdS太阳能电池在操作条件下的结构、化学、形态、电学和光学特性。该保持器将使用日立HF-3300 V扫描透射电子全息显微镜（STEHM）开发，该显微镜位于UVic的先进材料和相关技术中心（CAMTEC）。HF-3300 V是一种定制的最先进的系统，能够结合全息测量，高能量鉴别和高稳定性的超高图像分辨率。为了验证该装置，将使用同样在UVic的CAMTEC制备的薄膜太阳能电池对保持器进行测试。太阳能电池将被纳米结构化，以允许通过基于电子的全息方法研究不同的界面，并提供散射中心，以改变电池的光收集能力。拟议的项目将展示HF-3300 V用于太阳能电池表征的全部能力，该技术将转移到其他TEM显微镜的应用中。从这个意义上说，拟议的保持器（在制造、测试和确认之后）将是一项可商业化的技术。该保持器将为日立加拿大公司的产品线增加一个独特的产品，并可适用于TEM表征期间需要光学和/或电子集成的其他类型的应用（例如，发光器件、电子元件、燃料电池和电池的表征）。

This proposal suggest a partnership between researchers from the University of Victoria and Hitachi High-Technologies, Canada Inc. (Hitachi Canada) for the development of a new type of holder for scanning transmission electron microscopes (STEMs). This new holder will allow the implementation of optical and electric excitation inside a STEM. The system will be designed and built by researchers from the University of Victoria under close collaboration with Hitachi Canada's engineers. This holder will be tested to characterize structural, chemical, morphological, electrical and optical properties of nanostructured thin film CdTe/CdS solar cells in operational conditions for the first time. The holder will be developed using a Hitachi HF-3300V scanning transmission electron holography microscope (STEHM) housed at UVic's Center for Advanced Materials and Related Technologies (CAMTEC). The HF-3300V is a customized state-of-the-art system capable of ultra-high image resolution combined with holographic measurements, high energy discrimination and high stability. In order to validate the device, the holder will be tested using thin film solar cells also prepared at UVic's CAMTEC. The solar cells will be nanostructured to allow the investigation of different interfaces by electron-based holographic methods and to provide scattering centers that should alter the light gathering capabilities of the cell. The proposed project will showcase the full capability of the HF-3300V for solar cell characterization and the technology will be transferable to applications in other TEM microscopes. In that sense, the proposed holder (after being fabricated, tested and validated) will be a commercializable technology. The holder will add an unique offering to Hitachi Canada's product line and could be adapted to other types of applications that require optical and/or electronic integration during TEM characterization (for instance, characterization of light emitting devices, electronic components, fuel cells and batteries).