报告人： Peter Yu 教授（ 美国加利福尼亚大学伯克利分校）
时 间：10月25日14：00
地 点：发光室学术报告厅
Peter Yu ，美国加利福尼亚大学伯克利分校（University of California, Berkeley）物理系教授，国际著名半导体物理学家，著有享誉世界的物理学经典教材《半导体材料物理基础》，即《Fundamentals of Semiconductors: Physics and Materials Properties》。
Abstract
Several devices including solar cells and light emitting diodes require a transparent electrode. Although metals are good conductors they are not transparent unless their thickness is extremely small (~ nm) or they are porous. Even when they are transparent their absorption can still be significant so they are not ideal candidates. Doped semiconductors (such as oxides of Sn and In) have been commonly used as the transparent conductor (TC) since they can be quite transparent in the visible. By controlling their dopant concentration it is possible to give them fairly high conductivity. However, it has been difficult to obtain high quality films with high carrier mobility. In this talk I will discuss the reasons why obtaining a transparent film with good carrier mobility is like “eating the cake and keep it”. Given the constraints of Mother Nature I will discuss what strategies are available to optimize the performance of transparent conducting films.
Several devices including solar cells and light emitting diodes require a transparent electrode. Although metals are good conductors they are not transparent unless their thickness is extremely small (~ nm) or they are porous. Even when they are transparent their absorption can still be significant so they are not ideal candidates. Doped semiconductors (such as oxides of Sn and In) have been commonly used as the transparent conductor (TC) since they can be quite transparent in the visible. By controlling their dopant concentration it is possible to give them fairly high conductivity. However, it has been difficult to obtain high quality films with high carrier mobility. In this talk I will discuss the reasons why obtaining a transparent film with good carrier mobility is like “eating the cake and keep it”. Given the constraints of Mother Nature I will discuss what strategies are available to optimize the performance of transparent conducting films.
发光学及应用国家重点实验室
附件：
