Influence of Phosphor Concentration and Current Intensity on Phosphor-Based White LED Characteristics

Liang, 李亮 Li; Shangzhong, 金尚忠 Jin; Songyuan, 岑松原 Cen; Pei, 梁培 Liang; Le, 王乐 Wang; Yujie, 曹宇杰 Cao

doi:10.3788/lop49.032301

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2017

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“…When the current is small, the increase of the luminous intensity is much larger than that in the case of large current. This is because with the test time, LED chip junction temperature will gradually increase, the chip heat gradually increased, resulting in a substantial increase in thermal power, while the increase in optical power has gradually slowed down [11] . Figure 5 for different values of the drive current, the blue LED chip directly excited yellow phosphor after the white light spectrum.…”

Section: Methodsmentioning

confidence: 99%