ISO 20351:2017 PDF
Fine ceramics (advanced ceramics, advanced technical ceramics) — Absolute measurement of internal quantum efficiency of phosphors for white light emitting diodes using an integrating sphere
Fine ceramics (advanced ceramics, advanced technical ceramics) — Absolute measurement of internal quantum efficiency of phosphors for white light emitting diodes using an integrating sphere
- Статус документа:
- Отменён
- Формат:
- Электронный (PDF)
- Количество страниц:
- 10
- Дата публикации:
- 8 сентября 2017 г.
- Издание:
- ISO IS 20351 edition 1 version 1
- ICS:
- 81.060.30
ISO 20351:2017 specifies a method of absolute measurement (using an integrating sphere) of internal quantum efficiency of phosphor powders which are excited by UV or blue light and emit visible light, and which are used for white light-emitting diodes (LEDs). ISO 20351:2017 can be adopted for the measurement of phosphors used in non-white LEDs, for example, green, orange, pink or purple LEDs.
Abstract
Overview - ISO 20351:2017 (Integrating sphere method for phosphor IQE)
ISO 20351:2017 specifies an absolute measurement method for the internal quantum efficiency (IQE) of phosphor powders used in white light-emitting diodes (LEDs), using an integrating sphere. The procedure targets phosphors excited by UV or blue light that emit visible light, and it can also be applied to phosphors for non-white LEDs (green, orange, pink, purple). The standard documents equipment configuration, calibration, sample preparation, measurement steps, calculations and reporting to reduce inter-lab variation in measured photoluminescence quantum efficiency.
Key topics and technical requirements
- Measurement principle: Absolute IQE measurement using an integrating sphere to capture excitation, emission and scattered light for photon-based calculations.
- Equipment configuration: Describes a light source unit (monochromator or laser), sample unit (cell and integrating sphere), detecting unit (spectrometer, detector, optics) and data processing.
- Optical requirements: Guidance on excitation spectral width (desirable half-width
Технические детали
- Технический комитет
- ISO/TC 206 - Fine ceramics
- SKU
- ISO 20351:2017
Похожие стандарты
Другие стандарты ISO