Studies of carrier dynamics in unintentionally doped gallium nitride bandtail states
Resource
Applied Physics Letters 78 (18): 2724-2726
Journal
Applied Physics Letters
Journal Volume
78
Journal Issue
18
Pages
2724-2726
Date Issued
2001
Author(s)
Abstract
Ultrafast carrier dynamics of bandtail states in an unintentionally doped gallium nitride sample was investigated using femtosecond transient transmission measurements. The transient responses of shallow bandtail states resemble those of above band gap extended states. The transient responses of the deep bandtail states are, on the other hand dominated by carrier transfer into the lower energy states through phonon assisted tunneling suggesting that the deep bandtail states are localized states. © 2001 American Institute of Physics.
SDGs
Type
journal article