The establishment and YAG:Ce-based WLED application of simulation data generation platform of light sources’ color characteristics

Abstract

Abstract A simulation data generation platform designed to calculate light sources’ color characteristics including color coordinate (x, y) of CIE 1931 color space, (u ′ , v ′ ) of CIE 1976 UCS, CCT and R a within 380 ∼ 780 nm quickly and accurately is established on colorimetry and Matlab software. The simulation platform offers three data formats (1 nm/data point, 2 nm/data point and 5 nm/data point) and six standard illuminants (A, D50, D55, D60 D65 and D75) for selection freely. Comparison analysis between reported color characteristics values of several WLEDs and their calculated values based on the simulation platform shows that the absolute error of Ra is less than 1, exhibiting high calculation accuracy. Besides, a pc-WLEDs based on YAG:Ce nanocrystals (x=0.045) is fabricated, and its calculated values (0.3179, 0.34915), 6135 K and 70.07 of (x, y), CCT and R a are almost exactly the same as tested value (0.318, 0.349), 6146 K and 70.4, which proves the high accuracy of the simulation platform again. Due to its simplicity, no cost, high accuracy and selectivity, the simulation platform will be an efficient tool on evaluating light sources’ color characteristics, and as-prepared YAG:Ce nanocrystals (x=0.045) also shows high application value in WLED field.