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Fig. 3 Ultrafast PM spectroscopy of PEPI film excited at 3.1 eV.

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Presentation on theme: "Fig. 3 Ultrafast PM spectroscopy of PEPI film excited at 3.1 eV."— Presentation transcript:

1 Fig. 3 Ultrafast PM spectroscopy of PEPI film excited at 3.1 eV.
Ultrafast PM spectroscopy of PEPI film excited at 3.1 eV. (A) PM spectrum at t = 0 ps; PA1, PA2, and PM are assigned. The solid line through the data points of PA1 shown in the inset is a fit using a theoretical model for the exciton transition into the continuum (see main text and the Supplementary Materials). (B) Decay dynamics of the PM band at 2.4 eV and PA1 at 0.36 eV up to 500 ps. The lines through the data points are fits using double exponential decay (A1e-t/t1 + A2e−t/t2 + C), where t1 = 11.9 and 11.8 ps, t2 = 103 and 108 ps, and C = and for the PA1 and PM bands, respectively. (C) Schematic energy diagram with Rashba splitting that explains the PA1 transition. The Rashba energy (ER) may be obtained from the one-quarter of energy difference (ΔE) between PA1 transition and the 1s exciton binding energy (Eb). Yaxin Zhai et al. Sci Adv 2017;3:e Copyright © 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

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