Intrinsic photo-generation

The probability of this dissociation can be described in a modified Onsager model [29], [26-28]. Here, the activation energy for the intrinsic photo-generation of the free charge carriers is determined only by the Coulomb binding energy Ucp of the CP state ... [Pg.242]

The photo-generation of soliton-antisoliton pairs implies formation of states at mid-gap. Time resolved spectroscopy (2) has been used to observe the predicted absorption due to photogenerated intrinsic gap states in li aii -(CH)x. Moreover, the time scale for photo-generation of these gap states has been... [Pg.372]

In this Section, we introduce the charge transfer process from photosensitive polymer to SWNTs in the following specific aspects (1) intrinsic charge transport in polymer-coated SWNTs (2) extrinsic effects such as electrostatic gating from photo-generated charges, and photo-gating effect from substrates and (3) device fabrication method and its influence on the optoelectronic properties. [Pg.59]

While third-harmonic generation probes the intrinsic ultra-fast electronic response of the system, degenerate four-wave mixing, by measuring the nonlinear diffraction efficiency of the medium, is monitoring not only the instantaneous electronic response but also the nonlinear response of the photo-induced excitations (intra and intermolecular vibrations, acoustic phonons etc.) in which the system (decays in time once the excited states have been prepared (i.e. in resonance). The... [Pg.397]

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