English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Ultrafast electron injection from excited dye molecules into semiconductor electrodes

MPS-Authors
/persons/resource/persons252528

Eichberger,  Rainer
Fritz Haber Institute, Max Planck Society;

/persons/resource/persons22242

Willig,  Frank
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

External Ressource
No external resources are shared
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Eichberger, R., & Willig, F. (1990). Ultrafast electron injection from excited dye molecules into semiconductor electrodes. Chemical Physics, 141(1), 159-173. doi:10.1016/0301-0104(90)80027-U.


Cite as: http://hdl.handle.net/21.11116/0000-0007-68B3-A
Abstract
Fluorescence decay of adsorbed dye molecules is measured on semiconductor electrodes where their stationary photoelectrochemical current approaches the yield of one electron per absorbed photon, also on solids where injection cannot occur and finally on a semiconductor where the current yield is low. At very low coverages, Θ·~10−2, the fluorescence decay of an efficiently injecting ruthenium complex is faster than 10 ps on a polycrystalline TiO2 electrode and also that of the efficiently injecting cresyl violet monomer on single crystal n-SnS2. At higher coverage Θ⪰0,1, fluorescence decay is not only controlled by electron injection, exhibiting a very different dependence on dye coverage for different dye/semiconductor combinations with high injection yields at low coverages. Ultrafast and fast electron injection from vibronic excited dye monomers into the wide conduction band of semiconductors is discussed. The yield of stationary photoelectrochemical injection currents is discussed for different dye coverages taking into account the measured fluorescence decay behavior.