GB/T 39492-2020 Active National standards

GB/T 39492-2020 Testing method of quantum efficiency for white LED phosphor

Publish Date: 2020-11-19 Implement Date: 2021-10-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 39492-2020

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Analysis methods for rare metals and their alloys

ICS Name: Other non-ferrous metals and their alloys

Publish Date: 2020-11-19

Implement Date: 2021-10-01

Pages: 6 pages

Scope

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.