The e-ILV provides free access to all the terms and definitions contained in the international standard CIE S 017:2020 ILV: International Lighting Vocabulary, 2nd edition.

To search for another term please use  "Back to the list" to return to the main page or the e-ILV.

For the complete set of terms and definitions CIE S 017:2020 can be purchased from the CIE Webshop. Members of a CIE National Committee or Associate National Committee have access to a 66,7 % discount on the purchase price of the standard.


photoluminescence quantum yield

quotient of the photon flux of the radiation emitted by a photoluminescent material and the photon flux of the exciting radiation absorbed by that material

Note 1 to entry: See also "external photoluminescence quantum yield".

Note 2 to entry: The photoluminescence quantum yield has unit one.

Note 3 to entry: This entry was numbered 845-04-32 in IEC 60050-845:1987.

Note 4 to entry: This entry was numbered 17-906 in CIE S 017:2011.

Publication date: 2020-12
Copyright © CIE 2020. All Rights Reserverd.