The crushing time is extended and the ball mill speed is increased to make the smallest particles. There are broken marks on the surface, a certain amount of broken debris is attached, or the particles are directly split into flakes, which makes the powder particles have different morphologies and smoothness. Through the abnormal ball milling process, the phosphor particles have irregular morphology or cracks on the surface of the particles. As shown in Figure 2.0, the left picture shows the morphology of the phosphor particles after strong ball milling, and the right picture shows the fluorescence of the normal crushing process.
The particle morphology of the powder, through the foregoing analysis, it can be inferred that the thermal stability of the strongly crushed particles is better than that of the normal crushed particles\; Figure 2.0 The left and right images are the SEM morphologies of GRF-N and GRF-V, respectively. This article uses 2835. The target parameters are Ra=80-82, CCT=3000K, and the same packaging scheme is used to verify the influence of the phosphor powder that has undergone strong crushing treatment and normal crushing treatment on the cold-to-heat ratio of WLED light output. Denoted as GRF-N and GRF-V
Figure 2.1 shows the thermal quenching performance of GRF-N and GRF-V. It can be seen that as the temperature rises, the luminous brightness of the phosphor shows a continuous decrease trend, in which the decreasing amplitude of GRF-V is smaller than that of GRF-N , Which means that as far as the phosphor itself is concerned, the thermal stability of GRF-V is better than that of GRF-N. \; Figure 2.1 The thermal quenching performance of GRF-N and GRF-V
This article 5 years warranty led street light the influence of the strong crushing treatment process and the normal crushing treatment process on the cold-to-heat ratio of the WLED light output. The 2835 package is used, and the target parameter is Ra=80- 82, CCT=3000K, using the same packaging scheme to verify the influence of the strong crushing process and the normal crushing process on the cold and hot states.
industrialled