0381400 - ÚMCH 2013 RIV NL eng J - Journal Article
Menšík, Miroslav - Jex, M. - Pfleger, Jiří - Jung, J.
Photogeneration of free charge carriers in .pi.-conjugated polymers with bulky side groups.
Chemical Physics. Roč. 404, 24 August (2012), s. 48-55. ISSN 0301-0104. E-ISSN 1873-4421
R&D Projects: GA ČR(CZ) GAP205/10/2280; GA MŠMT(CZ) OC10007
Institutional research plan: CEZ:AV0Z40500505
Institutional support: RVO:61389013
Keywords : photogeneration of free charge carriers * charge transfer states * localized excitation
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 1.957, year: 2012 ; AIS: 0.677, rok: 2012
DOI: https://doi.org/10.1016/j.chemphys.2012.03.009

Photogeneration of free charge carriers in poly{1-[4-(trimethylsilyl)phenyl]-2-phenylacetylene} has been studied theoretically. In our work we have utilized our data obtained previously using photoinduced discharge experiment, which showed a steep slope of the dependence of the free charge carriers photogeneration yield on the applied electric field at the low electric field limit, but no saturation plateau. For the theoretical explanation we have utilized our recently developed model (Mensik et al., 2011) [20] that generalizes the model of Arkhipov et al. (2003) [19] by adding an assumption of a resonant reversible coupling of localized excitation to charge transfer states and, consequently, and dependence of internal parameters (permittivity, effective mass of the hole, rate constants) on electric field. Compared to our previous article this work provides a refined analysis of the experimental results on a large variety of intervals of the model parameters.
Permanent Link: http://hdl.handle.net/11104/0211880