Nonlinear photoluminescence in atomically thin layered WSe2 arising from diffusion-assisted exciton-exciton annihilation

• Main Authors: Mouri, Shinichiro, Miyauchi, Yuhei, Toh, Minglin, Zhao, Weijie, Eda, Goki, Matsuda, Kazunari
• 其他作者: School of Materials Science & Engineering
• 格式: Article
• 語言: English
• 出版: 2014
• 主題: DRNTU::Engineering::Materials
• 在線閱讀: https://hdl.handle.net/10356/102413; http://hdl.handle.net/10220/24269

We studied multiexciton dynamics in monolayer WSe2 using nonlinear photoluminescence (PL) spectroscopy and Monte Carlo simulations. We observed strong nonlinear saturation behavior of exciton PL with increasing excitation power density and long-distance exciton diffusion, reaching several micrometer...