A new STEHM holder for optoelectronic measurements

该提案建议维多利亚大学和加拿大日立高科技公司（Hitachi high technologies, Canada Inc.）的研究人员合作开发一种新型扫描透射电子显微镜（stem）支架。这种新的支架将允许在STEM内部实现光学和电激励。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制造。该支架将首次在操作条件下测试表征纳米结构薄膜CdTe/CdS太阳能电池的结构、化学、形态、电学和光学特性。支架将使用位于维多利亚大学先进材料和相关技术中心（CAMTEC）的日立HF-3300V扫描透射电子全息显微镜（STEHM）进行开发。HF-3300V是一种定制的最先进的系统，具有超高图像分辨率，结合全息测量，高能量识别和高稳定性。为了验证该装置，支架将使用同样在维多利亚大学CAMTEC制备的薄膜太阳能电池进行测试。太阳能电池将采用纳米结构，以便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-3300V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，拟议的持有人（在制造、测试和验证之后）将是一种可商业化的技术。持有人将为日立加拿大公司的产品线增加一个独特的产品，并且可以适应在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).