Correlation between optical absorption redshift and carrier density in phase change materials

• Main Authors: Ho, H. W., Song, W. D., Bai, K., Branicio, P. S., Tan, Teck L., Ji, R., Law, L. T., Ng, C. M., Lan, Wang.
• 其他作者: School of Physical and Mathematical Sciences
• 格式: Article
• 語言: English
• 出版: 2014
• 主題: DRNTU::Science::Physics::Optics and light
• 在線閱讀: https://hdl.handle.net/10356/94425; http://hdl.handle.net/10220/18376
• 機構: Nanyang Technological University

Here, we report an optical absorption redshift map for GeTe-Sb2Te3 pseudo-binary alloys. We found that, with phase change from amorphous to crystalline, the observed redshift increases with Ge concentration along pseudo-line of compositions, which directly reflects the enhanced electron delocalizati...