Photoelectrochemical studies of colloidal titania-films: the charge separation process studied by means of action spectra in the UV region
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The electron injection rate of bis(Bu4N) cis di(thiocyanato) bis (2,2'-bypiridine-4,4' carboxylic acid)Ruthenium (II) dye (N719) into SnO2 nanocryst. thin films was measured with 2-color femtosecond transient absorption spectroscopy. The electron injection ...
The abs. photodissocn. yield of H2O was measured in Ar matrixes at 160 nm. This energy was chosen as it corresponds to the max. of the photodissocn. yield curve. The abs. quantum efficiency is given by h = NOH/n(160 nm), where NOH is the no. of OH mols. pr ...
The photoelectrochem. properties of colloidal film electrodes are compared with solid transparent thin films of TiO2. In particular the information that can be derived from anal. of the action spectra for front and back side illumination of the films is gi ...
Dissocn. efficiencies for excitation of the repulsive A 1P state of HCl were recorded in Xe, Kr, and Ar matrixes for photon energies between 5 and 10 eV from the content of dissocn. products and quantum efficiencies were derived with the absorption spectra ...
We present recent results of the study of surface properties and quantum efficiency (QE) of CsI photocathodes prepared on various substrates. Microanalysis methods provide laterally resolved surface morphology and chemical composition of the photoemissive ...
The dynamics of electron-transfer processes between bis(tetrabutylammonium) cis-bis(thiocyanato)bis(2,2'-bipiridine-4,4'-dicarboxylato)ruthenium(II) (called N719) and nanostructured ZnO films were studied by femtosecond and nanosecond spectroscopy. The inc ...
CsI photocathodes were studied in order to evaluate their potential use as large photoconverters in RICH detectors for the PID system at ALICE (LHC in heavy ion collider mode). It has been demonstrated that a quantum efficiency comparable to the reference ...
Spatially resolved x-ray secondary electron photoemission spectra revealed lateral changes in quantum efficiency and chemical composition of polycrystalline cesium iodide photodetectors. Such changes depend on the substrate (stainless steel or aluminum). T ...
Photodissocn. of H2O (D2O) and Cl2 trapped in rare gas matrixes was studied in relation to the cage effect. Barrier energies for the exit of the fragments from the matrix cage were detd., together with the excess kinetic energy dependence of the photodisso ...
New time and energy resolved spectra of the L' 2F-X 2P(0,v") bands of NO in Ar and Kr matrixes are reported. The L'(0,v") bands are excited exclusively via the B' 2D valence state and their lifetime is 3000 +- 500 ns in both matrixes. The quantum efficie ...
