<> "The repository administrator has not yet configured an RDF license."^^ . <> . . "Ultrafast Excited State Dynamics and Functional Interfaces Probed by Second Harmonic Generation"^^ . "Understanding the ultrafast excited state dynamics in organic semiconductors after optical\r\nexcitation is a key requisite on the road towards efficient organic solar cells. Additionally,\r\nthe creation of functional interfaces built from organic molecular switches\r\nand the read-out of the photochromic state are essential for molecular electronics. In\r\nthis thesis, static second harmonic generation (SHG) measurements were utilized to\r\ninvestigate the photochromism of different indolylfulgimide derivatives immobilized on\r\nsilicon. During this, the influence of chemical modifications on the switching efficiencies\r\n(cross-sections) and the non-linear optical contrast between the switching states\r\nwere investigated. In the second part of this thesis, femtosecond time-resolved second\r\nharmonic generation measurements were used to investigate the ultrafast decay mechanism\r\nof optically induced electronically excited states in organic semiconductors and\r\ndonor/acceptor systems. These led to observations of relaxation into dimer induced\r\nstates, charge trapping at native silicon oxide and ultrafast vibronic relaxation. For the\r\ndonor/acceptor configurations, depending on the molecular orientation at the interface\r\nand the excitation energy, the creation of charge transfer states were investigated."^^ . "2017" . . . . . . . "Marc"^^ . "Hänsel"^^ . "Marc Hänsel"^^ . . . . . . "Ultrafast Excited State Dynamics and Functional Interfaces Probed by Second Harmonic Generation (PDF)"^^ . . . "Dissertation_Haensel_2017.pdf"^^ . . . "Ultrafast Excited State Dynamics and Functional Interfaces Probed by Second Harmonic Generation (Other)"^^ . . . . . . "indexcodes.txt"^^ . . . "Ultrafast Excited State Dynamics and Functional Interfaces Probed by Second Harmonic Generation (Other)"^^ . . . . . . "lightbox.jpg"^^ . . . "Ultrafast Excited State Dynamics and Functional Interfaces Probed by Second Harmonic Generation (Other)"^^ . . . . . . "preview.jpg"^^ . . . "Ultrafast Excited State Dynamics and Functional Interfaces Probed by Second Harmonic Generation (Other)"^^ . . . . . . "medium.jpg"^^ . . . "Ultrafast Excited State Dynamics and Functional Interfaces Probed by Second Harmonic Generation (Other)"^^ . . . . . . "small.jpg"^^ . . "HTML Summary of #23703 \n\nUltrafast Excited State Dynamics and Functional Interfaces Probed by Second Harmonic Generation\n\n" . "text/html" . . . "530 Physik"@de . "530 Physics"@en . . . "540 Chemie"@de . "540 Chemistry and allied sciences"@en . .