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Photovoltaic Measurement

Photonics Spectra
Dec 2009
Oriel InstrumentsRequest Info
 
Newport.jpgNewport Corp.’s Oriel Instruments division has announced the Oriel IQE-200, an instrument that performs simultaneous measurement of external and internal quantum efficiency of solar cells, detectors and any photon-to-charge converting device. Wavelength is from 300 to 1100 nm, working distance is 50 mm, resolution is 5 nm (adjustable), and repeatability is <±0.5. The system combines a 250-W quartz tungsten halogen light source, a monochromator, advanced sensor technology, and related electronics and software. The preconfigured and calibrated assembly with four-channel data acquisition for rapid measurement is a turnkey solution. The system measures silicon-based and thin-film cells, copper indium gallium diselenide and cadmium telluride.


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GLOSSARY
electronics
That branch of science involved in the study and utilization of the motion, emissions and behaviors of currents of electrical energy flowing through gases, vacuums, semiconductors and conductors, not to be confused with electrics, which deals primarily with the conduction of large currents of electricity through metals.
monochromator
Also known as monochromatic illuminator. An instrument for isolating narrow portions of the spectrum. The spectrum of any light source is formed by a prism or grating, and an exit slit placed in the spectrum selects a narrow band of wavelengths for emission. By moving the spectrum of a source internally past the slit, the color of the emitted light can be varied at will. As most monochromators emit several percentages of unwanted light -- either white or of the wrong wavelength -- along with...
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