electron-hole

But their exit is uncontrolled and leads to serious efficiency losses due to electron-hole recombination.

Analog Science Fiction and Fact 2005

If the electron-hole pair is formed in the space charge region, though, charge separation takes place.

Analog Science Fiction and Fact 2005

Conducts basic theoretical and experimental studies on the properties and behavior of inhomogeneous plasmas, such as the excitation of plasma oscillations by means of electron beams, measurement of plasma oscillation damping caused by various mechanisms, diffusion of both gaseous and electron-hole plasmas across magnetic fields, and diagnostic research on radio propagation in plasmas.

Discover What You’re Best At Linda Gale 1998

It is here that the electron-hole pairs are generated, thus facilitating their movement, as electrons and holes are far less mobile in amorphous silicon than crystalline silicon, and doping worsens this situation (U.S. DOE 1991).

4 Photovoltaics 1994

This is where the quantum confinement effects become very useful, as the effects couple photogenerated electrons and holes into bound electron-hole pairs called excitons, and encourage the efficient formation of more than one exciton from a single absorbed photon.

PhysOrg.com - latest science and technology news stories 2010

However, Nozik notes that, despite some controversy, recent studies have shown that the rate of MEG can be much faster than the hot exciton cooling rate, resulting in an overall higher efficiency of electron-hole pair multiplication.

PhysOrg.com - latest science and technology news stories 2010

In their study, Seidel and his collaborators found that these domain walls can serve the same electron-hole separation purpose as depletion zones only with distinct advantages.

EurekAlert! - Breaking News 2010

This is where the quantum confinement effects become very useful, as the effects couple photogenerated electrons and holes into bound electron-hole pairs called excitons, and encourage the efficient formation of more than one exciton from a single absorbed photon.

PhysOrg.com - latest science and technology news stories 2010

When photons from the sun are absorbed, their energy is used to create electron-hole pairs, which are then separated at the interface between the two layers and collected as electricity.

D Mag - News 2010

However, Nozik notes that, despite some controversy, recent studies have shown that the rate of MEG can be much faster than the hot exciton cooling rate, resulting in an overall higher efficiency of electron-hole pair multiplication.

PhysOrg.com - latest science and technology news stories 2010