Concept

Intensité énergétique (physique)

Publications associées (73)

Investigation of influence of redox species on the interfacial energetics of a dye-sensitized nanoporous TiO2 solar cell

The photoelectrochem. behaviors of dye-sensitized nanoporous TiO2 solar cells are studied under influences of light intensity, redox couple concn., temp., different cations and water in the nonaq. soln. The value of the ideality factor of dyed nanoporous T ...

1998

Angle-Resolved Photoemission from an Unusual Quasi-One-Dimensional Metallic System - a Single-Domain Au-Induced 5x2 Reconstruction of Si(111)

Giorgio Margaritondo

Angle-resolved photoemission spectroscopy (ARPES), using HeI radiation, has been used to probe the occupied electronic states from a single domain of the Au-induced 5 x 2 reconstruction of Si(lll), a quasi-one-dimensional (quasi-1D) metallic system. The AR ...

1995

Femtosecond dynamics of I2(B 3Π0u+) in liquids from resonance Raman spectra

Majed Chergui

The intensity distributions in the overtones of resonance Raman spectra for I2 in liq. CCl4 and Xe are presented for several excitation energies in the bound part of the B 3P0u+ state. In liq. CCl4, the decrease in intensity with v" is monotonous and for ...

1994

Photoemission near the Fermi Energy in One Dimension

Giorgio Margaritondo, Marco Grioni, Helmuth Berger

Angle-resolved photoemission spectra taken with high energy resolution on the one-dimensional compound (TaSe4)2I confirm the suppression of the spectral intensity at the Fermi edge for one-dimensional systems and lend support to correlation effects as its ...

1992

A correlation between surface morphology and RHEED intensity variation for growth of GaAs by molecular beam epitaxy

Marcel Py

We present a correlation between the behaviour of the RHEED specular reflected beam intensity during the initial phases of growth, the MBE growth conditions (T(s), P(As4), V(GaAs)), and the surface morphology examined by Nomarski contrast microscopy after ...

Elsevier1991

Biogeochemistry of iron in an acidic lake - Dedicated to Werner Stumm for his 65th birthday

Janet Gordon Hering

In this paper, the fate of iron in Lake Cristallina, an acidic lake in the Alps of Switzerland, is discussed. A simple conceptual model is developed in order to explain the observed diel variation in dissolved iron(II) concentration. Biotite weathering pro ...

1990

High-speed laser chemical vapor deposition of copper: a search for optimum conditions

Hubert van den Bergh

The photothermal laser-induced chem. vapor deposition of Cu was studied as a function of the writing speed, the light intensity, and the diam. of the focal spot on the substrate, at three different pressures of the Cu bishexafluoroacetylacetonate precursor ...

1989

Intensity enhancement of the nitric oxide C2P(v = 0) fluorescence in the presence of rare gases

Majed Chergui

Fluorescence of the predissocd. C2P(v = 0) state of NO in the presence of rare gases was investigated by using selective excitation with synchrotron radiation. In the presence of Ar an anomalous pressure behavior was obsd.: at low pressures (0-30 torr), th ...

1986

Structure and formation of metal film deposited by laser-induced dissociation

Hubert van den Bergh, René Monot

Sn and Pt films were laser deposited on a quartz plate or C membrane supports by using light-induced thermal dissocn. and photodissocn. of SnMe4 and bis(hexafluoroacetylacetonato)platinum, resp. An Ar laser (l = 514.5, 455.5, 257.3 nm) and a Hg lamp (l = 2 ...

1984

BACKSCATTERED ELECTRON IMAGES OF POLISHED CEMENT SECTIONS IN THE SCANNING ELECTRON MICROSCOPE

Karen Scrivener

Using a pair of backscattered electron detectors in the scanning electron microscope, images can be produced in which the intensity is dependent solely on the molecular weight of the imaged area, and independent of small fluctuations in topography. The use ...

1984

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