GDL

Journal from gdlhub / 2019-07-26 16:24:43
Oleh : Tran Thanh Trang, Phan Xuan Le, Nguyen Doan Quoc Anh, Telkomnika
Dibuat : 2019-07-25, dengan 1 file

Keyword : color uniformity, dual-layer phosphor, luminous efficacy, Mie-scattering theory, SrBaSiO4:Eu2+
Url : http://journal.uad.ac.id/index.php/TELKOMNIKA/article/view/11038
Sumber pengambilan dokumen : WEB

In order to clarify the main purpose of the study, we put a green phosphor layer SrBaSiO4:Eu2+ on the yellow phosphorus layer YAG:Ce3+ through using only one WLEDs structure in different color temperatures like 5600 K, 6600 K, 7700K. Then, we find the suitable SrBaSiO4:Eu2+ concentration in order that the luminous flux could get the highest value. The results show that SrBaSiO4:Eu2+ brings great benefits to increase not only optical gain but also color uniformity. Specifically, the greater the SrBaSiO4:Eu2+ concentration, the greater the output of WLEDs because of the development of green light component in WLEDs. However, only if the SrBaSiO4:Eu2+ concentration exceeds the level, a slight decrease in color rendering index (CRI) can occur, which based on Monte Carlo simulation. In addition, the results of this paper have contributed significantly to the creation of higher-powered WLEDs.

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