Dynamique des réactions de transfert d'électrons induites par la lumière à la surface de semi-conducteurs colloïdaux
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Contactless dye-sensitised nano-photoelectrodes assembled at polarisable liquid|liquid interfaces exhibit photocurrent responses originating from the heterogeneous photooxidation of ferrocene by the colloids. The photocurrent spectra of the nanoparticle as ...
We have directly measured the carrier temperature in semiconductor optical amplifiers (SOAs) via spontaneous emission and we demonstrate an unexpectedly high carrier temperature. The direct correlation of the temperature increase with the carrier density s ...
The laser-induced luminescence of direct gap semiconductors can be measured with high spatial (1 μm) and temporal (<1 ns) resolution. A profiling technique is described for in-situ measurements during laser processing. It allows the evaluation of tem ...
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 ...
Motivated by recent developments concerning coloration and energy storage in lithium intercalated nanostructural TiO2, quantum chem. Hartree-Fock calcns. have been carried out to study lithium atom intercalation in rutile and anatase. Equil. geometries and ...
We report on carrier-induced effects on emission and absorption in forward biased GaAs/AlGaAs V-groove quantum wire (QWR) diodes observed using low-temperature (10 K) photoluminescence (PL), electroluminescence (EL) and PL excitation (PLE) spectroscopy. In ...
An optoelectric radiation detector detecting short wave electromagnetic radiation, characterized by a charge transfer layer containing a hole conduction material. ...