ISO 20351:2024
ISO 20351:2024 Fine ceramics (advanced ceramics, advanced technical ceramics) – Test method for optical properties of ceramic phosphors for white light-emitting diodes using an integrating sphere
CDN $195.00
Description
This document specifies test methods for the use of an integrating sphere to measure the optical properties of ceramic phosphor powders, which are used in white light-emitting diodes (LEDs) and emit visible light when excited by UV or blue light. This document specifies an absolute method to measure internal quantum efficiency and a substitution method to measure external quantum efficiency and absorptance. The substitution method uses reference materials whose external quantum efficiency and absorptance have been obtained in accordance with ISO 23946.
Edition
2
Published Date
2024-10-16
Status
PUBLISHED
Pages
14
Language
English
Format
Secure PDF
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Abstract
This document specifies test methods for the use of an integrating sphere to measure the optical properties of ceramic phosphor powders, which are used in white light-emitting diodes (LEDs) and emit visible light when excited by UV or blue light. This document specifies an absolute method to measure internal quantum efficiency and a substitution method to measure external quantum efficiency and absorptance. The substitution method uses reference materials whose external quantum efficiency and absorptance have been obtained in accordance with ISO 23946.
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