Photoinduced charge injection

External Factors which Affect Photoinduced Charge Injection... 

Therefore, both types of experiments indicate that the photoinduced charge injection into the semiconductor surface can be controlled through the lithium concentration. Other cations, such as calcium, barium and magnesium, show similar increases in the injection yield, while sodium and potassium are less effective. This... 

Moser J. E., Wolf M., Lenzmann F. and Gratzel M. (1999), Photoinduced charge injection from vibronically hot excited molecules of a dye sensitizer into acceptor states of wide-bandgap oxide semiconductors , Z. Phys. Chem B 212, 85-92. 

Moser J-E, Gratzel M (1998) Excitation-wavelength dependence of photoinduced charge injection at the semiconductor-dye interface evidence for electron transfer fiom vibrationally hot excited states. Chimia 52 160-162... 

Piotrowiak P, Galoppini E, Wei Q, Meyer GJ, and Wiewior R. Subpicosecond photoinduced charge injection from "Molecular tripods" into mesoporous Ti02 over the distance of 24 angstroms. J. Am. Chem. Soc. 2003 125 5278-5279. 

A reverse PET, namely photoinduced charge injection from an electronically excited chromophore to a semiconductor surface, is typically the initial step in dye-sensitized solar cells (DSSCs) of the Gratzel-type, for example, with a trinuclear ruthenium dye 51 (Figure 20.11a) [69]. Such a PET step, reminiscent of the charge separation in DSSCs or in PS II, has been visualized by Kelvin probe force microscopy on a donor-chromophore-acceptor nanocomposite poly[TPA-Ru (tpy)2] ZnO (tpy, 2,2 6, 2"-terpyridine) 52 prepared from a ZnO-immobilized [Ru (tpy)2] chromophore (Figure 20.11b, TPA, tripheny-lamine) [70]. In 52, both the electron acceptor (ZnO) and the electron donor (TPA) are assembled in a directional manner to assist the charge separation step... 

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