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cadmium sulfide (CdS)

Cadmium sulfide (CdS) is a semiconductor material used in photoresistors. This semiconductor material belongs to the II-VI compound semiconductors and has its highest sensitivity at a visible wavelength

of 520 nm.

Resistance-light characteristic of a photoresistor

Resistance-light characteristic of a photoresistor

Cadmium selenide (CdSe), another semiconductor material used in photoresistors, has its maximum sensitivity at 730 nm. The resistance value of these photoresistors decreases with increasing light intensity

. A change in luminous intensity of one power of ten is roughly countered by a change in resistance of one power of ten. The light-resistance behavior corresponds approximately to an exponential function.

In addition, the corresponding photoresistances at low luminous intensity are strongly temperature-dependent.

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Englisch: cadmium sulfide - CdS
Updated at: 12.11.2019
#Words: 104
Translations: DE