Femtosecond Electron Delocalization in Polymer:Fullerene Blend Films

29th International Conference on Photonic, Electronic, and Atomic Collisions

Garcia-Basabe, Yunier^1 ; Marchiori, Cleber F.N.^2 ; Roman, Lucimara S.^2 ; Rocco, Maria Luiza^1

Institute of Chemistry, Federal University of Rio de Janeiro, Rio de Janeiro

21941-909, Brazil^1

Departament of Physics, Federal University of Paraná, Curitiba

81531-990, Brazil^2

关键词: Absorption edges;    Delocalizations;    Femtosecond electron;    Femtosecond regimes;    Low bandgap polymers;    Resonant Auger spectroscopy;    Thermal-annealing;    Ultrafast electron dynamics;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/12/122003/pdf
DOI  :  10.1088/1742-6596/635/12/122003

来源: IOP

【 摘 要 】

Ultrafast electron dynamics in the low-femtosecond regime was evaluated for a low band-gap polymer and its blend with fullerene by resonant Auger spectroscopy. Remarkable changes developed by tuning the photon energy along the sulfur and silicon 1s absorption edges. The effect of thermal annealing and molecular orientation on the charge transfer delocalization times were probed and correlated with solar cells performance.