The 6th Global Conference on Materials Science and Engineering
October 24th - 27th, 2017, Beijing, China
Invited Speaker-----Dr. Tetsuya Yamamoto

Professor and Head, Materials Design Center, Research Institute, Kochi University of Technology, Japan.

Speech Title: Correlation between carrier transport and orientation evolution of polycrystalline highly transparent conductive oxide films
Abstract: We demonstrate a nanoscale materials design to achieve high-Hall-mobility oxide polycrystalline films such as ZnO and In2O3 films deposited on amorphous glass substrates at a low temperature for use as the transparent electrodes of flat panel displays and in the window layers of solar cells, as chemical sensors and so on. Very recently, for Al-doped ZnO textured polycrystalline films deposited by direct-current magnetron sputtering on 10-nm-thick Ga-doped ZnO films with a well-defined (0001) orientation, with no intentional post-heat annealing, we reported a high Hall mobility of 50.1 cm2 /Vs with a carrier concentration of 2.55 × 1020cm−3 . The key factor is to enhance intragrain carrier mobility together with a substantial reduction of the contribution of grain boundary scattering to carrier transport due to a high degree of c-axis alignment between columnar grains. The development of the technique with a nanoscale materials design of very thin films is expected to help us understand the mechanisms of carrier transport of highly doped ZnO polycrystalline films.
The 6th Global Conference on Materials Science and Engineering
CMSE Conference Secretary: Ms. Li Ling     Email:
Copyright © CMSE 2017! All rights reserved.