The development of high efficiency solar cells relies on the management of electronic and
optical properties that need to be accurately measured. As the conversion efficiencies …

In this article, we introduce time-resolved fluorescence imaging as an optical
characterization method for optoelectronic devices. Under wide-field illumination, it allows …

We imaged the transport of current-induced spin coherence in a two-dimensional electron
gas confined in a triple quantum well. Nonlocal Kerr rotation measurements, based on the …

Since a decade, spintronics and related physics have attracted considerable attention due to
the massive research conducted in these areas. The main reason for growing interest in …

The traditional measurement of the thermoelectric Seebeck coefficient gives a global value
for a given material. This method requires heating and electrical contacts. Here, we report a …

Carrier and spin recombination are investigated in p-type GaAs of acceptor concentration
NA= 1.5× 10 17 cm− 3 using time-resolved photoluminescence spectroscopy at 15 K. At low …

A spin-spin coupling mechanism that occurs during the transport of spin-polarized minority
electrons in semiconductors is described. Unlike the Coulomb spin drag, this coupling arises …

We have investigated charge and spin transport in n-type metallic GaAs nanowires (≈ 10 17
cm− 3 do** level) grown by hydride vapor phase epitaxy (HVPE) on Si substrates. For this …

We investigate the diffusion of charge and spin at 15 K in p-type GaAs, combining transient-
grating and energy-resolved microluminescence measurements to cover a broad range of …

We report on a quasi-nondegenerate pump–probe technique that is based on spectral-
filtration of femtosecond laser pulses by a pair of mutually-spectrally-disjunctive …