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How does phosphorescence work?

Updated: 8/11/2023
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12y ago

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a type of light emission that is the same as fluorescence except for a delay between excitation and de-excitation, which provides an afterglow. The delay is caused by atoms being excited to energy levels that do not decay rapidly. The afterglow may last from fractions of a second to hours, or even days, depending on the type of material, temperature, and other factors.

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12y ago
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12y ago

Phospheresnce is closely related to flouroescence. Like fluorescent materials, phosphorsecant materials give off visible light when excited by energy like UV light. However, while flouroesce material quits emitting light when UV light is turned off, phosophorescant material continues to give off light. The extra duration varies from phosphorescent material to phospheresant material. Sometimes phosopherescant material gives off light for a fraction of a second longer, other material for hours or even days. The phosophorescance can be caused by UV light, but also visible light, X-rays, infrared and other light. As with fluorescence, the color, brightness and duration of the phosphorescence is caused by the atomic make up of the material.

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12y ago

basic concept of phosphorescence

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Q: How does phosphorescence work?
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