Acceleration of Photocarrier Relaxation in Graphene Achieved by Epitaxial Growth: Ultrafast Photoluminescence Decay of Monolayer Graphene on SiC

Hirotaka Imaeda, Takeshi Koyama, Hideo Kishida, Kenji Kawahara, Hiroki Ago, Ryotaro Sakakibara, Wataru Norimatsu, Tomo O. Terasawa, Jianfeng Bao, Michiko Kusunoki