Title :
Ultrafast carrier dynamics in GaN bandtail states
Author :
Liang, Jian-Chin ; Sun, Chi-Kuang ; Huang, Yong-Liang ; Yu, Xiang-Yang ; Keller, Stacia ; Mishra, Umesh K. ; DenBaars, Steven P.
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
We report our studies of the carrier dynamics of bandtail localized states in an unintentionally doped GaN thin film. While the deep localized states show isolated behaviors, the carriers in shallow bandtail states thermalize within 100 fs, indicating strong coupling with the above bandgap states
Keywords :
III-V semiconductors; carrier mobility; gallium compounds; high-speed optical techniques; localised states; 100 fs; GaN; GaN bandtail states; bandgap states; bandtail localized states; carrier dynamics; deep localized states; isolated behavior; shallow bandtail states; ultrafast carrier dynamics; unintentionally doped GaN thin film; Apertures; Electromagnetic wave absorption; Gallium nitride; Optical materials; Optical pulses; Photonic band gap; Pulse measurements; Stimulated emission; Substrates; Wavelength measurement;
Conference_Titel :
LEOS '99. IEEE Lasers and Electro-Optics Society 1999 12th Annual Meeting
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-5634-9
DOI :
10.1109/LEOS.1999.813464
