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Probably the most important source of efficiency in production is
Phosphorescence
A type of photoluminescence related to fluorescence, but in which a material emits light for a longer period after the initial excitation energy is supplied.
Chemiluminescence
The emission of light (luminescence) as a result of a chemical reaction without the need for external light sources.
Mineral Sample
A physical piece of a naturally occurring solid substance with a defined chemical composition and crystalline structure.
Phosphorescence
A type of photoluminescence where a substance absorbs photons and re-emits them, resulting in a glow after the excitation source is removed.
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