通过电子断层扫描术对 TiO2 纳米结构进行三维观察。

Three-dimensional observation of TiO2 nanostructures by electron tomography.

机构信息

The University of Texas at Dallas, Richardson, TX 75080, USA.

出版信息

Micron. 2013 Mar;46:35-42. doi: 10.1016/j.micron.2012.12.002. Epub 2012 Dec 16.

DOI:10.1016/j.micron.2012.12.002

Abstract

Three-dimensional nanostructures of TiO2 related materials including nanotubes, electron acceptor materials in hybrid polymer solar cells, and working electrodes of dye sensitized solar cells (DSSCs) were visualized by electron tomography as well as TEM micrographs. The regions on the wall of TiO2 nanotubes where the streptavidins were attached were elucidated by electron tomogram analysis. The coverage of TiO2 nanotubes by streptavidin was also investigated. The TiO2 nanostructures in hybrid polymer solar cells made by sol-gel and atomic layer deposition (ALD) methods and the morphologies of pores between TiO2 particles in DSSCs were also observed by reconstructed three-dimensional images made by electron tomography.

摘要

通过电子断层扫描和透射电子显微镜照片，对包括纳米管在内的 TiO2 相关材料的三维纳米结构、混合聚合物太阳能电池中的电子受体材料以及染料敏化太阳能电池（DSSC）的工作电极进行了可视化观察。通过电子断层扫描分析，阐明了壁上附着链霉亲和素的 TiO2 纳米管区域。还研究了链霉亲和素对 TiO2 纳米管的覆盖程度。通过电子断层扫描重建的三维图像，还观察了溶胶-凝胶和原子层沉积（ALD）方法制备的混合聚合物太阳能电池中的 TiO2 纳米结构以及 DSSC 中 TiO2 颗粒之间的孔形态。