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

• المؤلفون الرئيسيون: Mouri, Shinichiro, Miyauchi, Yuhei, Toh, Minglin, Zhao, Weijie, Eda, Goki, Matsuda, Kazunari
• مؤلفون آخرون: School of Materials Science & Engineering
• التنسيق: مقال
• اللغة: English
• منشور في: 2014
• الموضوعات: DRNTU::Engineering::Materials
• الوصول للمادة أونلاين: https://hdl.handle.net/10356/102413; http://hdl.handle.net/10220/24269
• المؤسسة: Nanyang Technological University

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...