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dark current

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dark current

[′därk ‚kər·ənt]
(electronics)
electrode dark current
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

dark current

The current that flows in a photodetector when it is not receiving any light. It may increase as the temperature rises.
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References in periodicals archive
I only needed to look at the first raw images as they downloaded from the Parsec to realize that this camera delivers on its promise of high resolution, low dark current, and high sensitivity.
Orion Parsec 8300M: does Orion's newest CCD camera live up to claims that it's the company's best model yet for deep-sky photographers?
It is noted that the pure TNT-arrays photoelectrode produces the highest dark current, while the double-layered and P25 photoanode produces the lowest dark current at the same potential of about 0.55 V.
Ti[O.sub.2] nanotube arrays composite film as photoanode for high-efficiency dye-sensitized solar cell
Applications for PocketPico Picoammeter include: photodiode current and dark current measurement, ion beam monitoring and measurement, SEM and TEM beam current measurement, optical fiber alignment, component, sensor, and device I-V characterization, materials resistance testing, leakage current testing, analog and mixed-signal circuit testing & analysis, teaching labs, product demonstrations, etc.
Saelig's New Tiny Picoammeter Eliminates Voltage Transients
This may be an acceptable approach for short exposures, which don't require deep cooling since there is little time for dark current to accumulate in the pixels.
Residual bulk image: cause and cure: understanding the subtleties of your CCD camera will help you create better images and scientific data
Cells parameters like the short-circuit current density ([J.sub.SC]), opencircuit voltage ([V.sub.OC]), and maximum dark current ([J.sub.SC.sup.max]) are shown in Table 2.
Development of dye-sensitized solar cells with sputtered N-Doped Ti[O.sub.2] thin films: from modeling the growth mechanism of the films to fabrication of the solar cells
Failure to subtract the dark current from a flat-field frame will make the denominator incorrectly large, resulting in an improper correction to the raw image.
Demystifying flat fields: understanding the workings of flat-field calibration will greatly improve your CCD images
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