We use angle-resolved reflection measurements to characterize polariton dispersion, and use ultrafast transient absorption (TA) spectroscopy to study the influence of the “open cavity” on the charge generation dynamics of the donor-acceptor bilayer and blend systems.
Citation to related publication:
Yogita Silori, Bin Liu, Yongxi Li, Stephen R. Forrest, and Jennifer P. Ogilvie, "Impact of Cavity Strong Coupling on the Charge Transfer Dynamics in Organic Donor-Acceptor Heterojunctions", Phys. Rev. B. Accepted April 2025, https://doi.org/10.1103/859s-sc6n
Mathematica Diffusion Simulation: Programmed by Coburn, Caleb. Simulation of diffusion in organic heterostructures, including least square fits and statistical goodness of fit analysis. Used to calculate fits to transient data in Fig 1, 3 and Extended Data Fig.2. Example data file included for download
Matlab Montecarlo simulation: Programmed by Coburn, Caleb. Montecarlo simulation of charge diffusion on a cubic lattice to determine lateral diffusion length as a function of barrier height, assuming thermionic emission over the barrier.
Matlab 2D Diffusion Simulation:Programmed by Coburn, Caleb. Modified from BYU Physics 430 Course Manual. Simulates diffusion around a film discontinuity, such a cut. Used to generate fits to Extended Data Fig. 1
Burlingame, Q., Coburn, C., Che, X., Panda, A., Qu, Y., & Forrest, S. R. (2018). Centimetre-scale electron diffusion in photoactive organic heterostructures. Nature, 554(7690), 77-80. https://doi.org/10.1038/nature25148