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B51-14 (R2019) – Boiler, pressure vessel, and pressure piping code

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ISO 23946:2020

ISO 23946:2020 Fine ceramics (advanced ceramics, advanced technical ceramics) – Test methods for optical properties of ceramic phosphors for white light-emitting diodes using a gonio-spectrofluorometer

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Description

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.

Edition

1

Published Date

2020-11-30

Status

PUBLISHED

Pages

20

Language Detail Icon

English

Format Secure Icon

Secure PDF

Abstract

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.

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