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Status : Active
Standard Type : Main
Document No : ISO 23946:2020
Document Year : 2020
Pages : 20
Edition : 1
Section Volume : Fine ceramics (ISO/TC 206.)
This document specifies a method for use of a gonio-spectrofluorometer to measure internal quantum efficiency, external quantum efficiency, absorptance, luminescent radiance factor and relative fluorescence spectrum of ceramic phosphor powders which are used in white light-emitting diodes (LEDs) and emit visible light when excited by UV or blue light.