Chinese Physics B, Volume. 29, Issue 10, (2020)
Exciton dynamics in different aromatic hydrocarbon systems
The exciton dispersion is examined in the case of four selected prototypical molecular solids: pentacene, tetracene, picene, and chrysene. The model parameters are determined by fitting to experimental data obtained by inelastic electron scattering. Within the picture that relies on Frenkel-type excitons we obtain that theoretical dispersion curves along different directions in the Brillouin zone are in good agreement with the experimental data, suggesting that the influence of charge-transfer excitons on exciton dispersion of the analyzed organic solids is not as large as proposed. In reciprocal space directions where Davydov splitting is observed we employ the upgraded version of Hamiltonian used in Materials11, 2219 (2018).
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Milica Rutonjski, Petar Mali, Slobodan Radošević, Sonja Gombar, Milan Pantić, Milica Pavkov-Hrvojević. Exciton dynamics in different aromatic hydrocarbon systems[J]. Chinese Physics B, 2020, 29(10):
Received: Apr. 14, 2020
Accepted: --
Published Online: Apr. 21, 2021
The Author Email: Rutonjski Milica (milica.rutonjski@df.uns.ac.rs)