Photoluminescence

 

Photoluminescence (abbreviated as PL) is a process in which a substance absorbs photons (electromagnetic radiation) and then re-radiates photons. Quantum mechanically, this can be described as an excitation to a higher energy state and then a return to a lower energy state accompanied by the emission of a photon. This is one of many forms of luminescence (light emission) and is distinguished by photoexcitation (excitation by photons), hence the prefix photo-.[1] The period between absorption and emission is typically extremely short, in the order of 10 nanoseconds. Under special circumstances, however, this period can be extended into minutes or hours.

Source

Emission of light from a material under optical excitation

Source

Emission of light from a material under optical excitation

Source

Light excited in a body by some form of electromagnetic radiation in the ultraviolet, visible, or infrared regions of the electromagnetic spectrum. See electroluminescence, LED, and luminescence.

Source

 

 

 

 

 

 


___________________

Refer to this page:

___________________

Related Terms:

 

Note: If a company/institute/site doesn't want to present its own information in nanodic.com, it can sent one e-mail to info@nanodic.com.