Photoluminescence refers to the emission of light from a material after it has been excited by an external (photon) source, such as a laser. This process involves the absorption of a photon by the material, followed by the emission of that photon as visible light. Photoluminescence can be used to study the optical and electronic properties of materials at the nanoscale and has important applications in areas such as bioimaging, sensing, and optoelectronics. Read more about photoluminescence in the slideshow below.
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