The flux reflected from the specimen is registered within the integrating sphere by a photoconductive detector of Ge(Au) with a germanium window 8. The signal from the detector is fed to a narrow-band amplifier 7 and then to a synchronous detector ii. Simultaneously the synchronous detector ...
Quantum efficiency of these photosensors is in the 20–30% range and the S-25 photocathode is about 10 to 15% quantum efficient. It is found that the speed of response of low light level cameras depends on photoconductive and capacitative effects at the photocathode....
The thus obtained values are in excellent agreement with the ones obtained from microwave absorption measurements of photoconductive decay as is illustrated on Czochralski substrates with different oxygen densities and pretreatments.关键词: Electron hole recombination Microwave spectroscopy Microwaves ...
Of late this material has found a variety of applications other than as an isolation region between devices, or the substrate of an active device. High resistivity SI GaAs is increasingly being used in charged particle detectors and photoconductive semiconductor switches (PCSS). PCSS made from ...
a metal layer for collecting photocarriers to the junction portion, a photoconductive layer formed on the metal layer for generating photocarriers associated with an incident light, and a transparent electrode layer formed on the photoconductive layer and including an electrically conductive substance tran...
Silicon solar cells were fabricated and studied by conventional characterization methods.Characterization of photovoltaic effect and mechanism was performed using scanning probe microscopy.Kelvin force microscopy (KFM) and photoconductive atomic force microscopy (PC-AFM) were used.Behavior of KFM result is ...
Methods for determining the carrier lifetime in a semiconductor crystal include the photoconductive decay technique, the surface photovoltage technique, and measurements which apply the spectral response of solar cells. It is shown that longitudinal as well as radial profiles of carrier lifetime in as...
II–VI compounds are widely used in solid-state devices such as photovoltaic cells, optoelectronic devices, photoconductive and photo-electric devices [1,2,3]. ZnTe has, in particular, been studied for solar cell applications because of its optimum energy gap of 2.24 eV at room temperature and...