Electrons and Holes in a SemiconductorThe chapter reviews recent developments in nanostructured semiconductor composites for solar cells. It begins by describing the operating principle of the photovoltaic cell and the strategic potential of nanostructured semiconductors in photovoltaics. The chapter then ...
All the macroscopic properties of crystals (semiconductors, for one) can be divided into two classes. To one class belong all properties that are determined by the periodicity of the crystal, and for which the defects present in any real lattice play the
In this study, we present the constant light-induced magneto transport (CLIMAT) method, which combines light, electrical current, and a magnetic field (as depicted in Fig.1c) to assess the transport properties of holes and electrons separately. CLIMAT relies on two key elements: (a) determinin...
The negative, or crossed-gap configuration of these quantum wells leads to a charge transfer between the semiconductors InAs and GaSb, generating intrinsic carriers (both electrons and holes) on either side of the interface. This type of quantum well behaves like that of a semimetallic material ...
(2)to provide two types of charge carriers(electrons and holes)to carry the electrical current or to provide two conductivity types,the n-type(conduction by electrons)and p-type(conduction by holes). The wide range of electrical conductivity makes it possible to control and modulate the magnit...
Andreev bound states are a superposition of electrons and holes, and can also develop a non-trivial spin structure if the system exhibits spin–orbit coupling and low densities, as is the case in proximitized semiconducting nanowires. Precise experimental characterization of ABSs in proximitized nano...
We study the transport of the photoexcited quasi-2D electron-hole (e-h) plasma in a p-doped semiconductor quantum well, where electrons are a minority. Using the drifted temperature model for both electrons and holes and introducing a coordinate transformation to the center-of-mass system, separ...
A variational theory is presented for the binding energy and optical strength of the quasi-two-dimensional excitons created optically at low temperature in a quantum well containing degenerate carriers of one type (electrons or holes). Both screening and the exclusion principle are taken into account...
The mechanism of rapid cooling is not precisely known, but thought to involve coupling to vibrations as well as Auger-coupling between electrons and holes [51, 162–165]. Fig. 4 Schematic representation of possible relaxation pathways for hot-carrier states. a Thermalization by means of electron...
In this model, a small fraction of the electrons are assumed to tunnel from the valence band to the conduction band near the direct gap at the peak of the pump field. The electrons and holes are subsequently accelerated in their respective bands by the driving pulse. In this limit, we ...