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GB/T 39492-2020 Active
GB/T 39492-2020 Testing method of quantum efficiency for white LED phosphor
Abstract
This standard specifies the methodological principles, instrumentation, test procedures, test result presentation, precision, and test report requirements for measuring the quantum efficiency of phosphors used in white LEDs.
This standard is applicable to the testing of the external quantum efficiency and internal quantum efficiency of phosphors used in white LEDs when the LED chip is excited at a peak wavelength of 400 nm to 480 nm and emits light in the wavelength range of 400 nm to 780 nm. The measurement range of the external quantum efficiency is 0.6 to 0.9, and the measurement range of the internal quantum efficiency is greater than 0.9.
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Active |
| Standard Code | GB/T 39492-2020 |
| CCS | Analysis methods for rare metals and their alloys |
| ICS | Other non-ferrous metals and their alloys |
| Implement Date | 2021-10-01 |
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