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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS)
Nguyen Huu Khanh Nhan
Ton Duc Thang University
Control & Systems Engineering Electrical & Electronics Engineering

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Using Green Emitting Phosphor for Improving Lighting Performance of In-cup Package White LED Lamps Phu Tran Tin; Nguyen Huu Khanh Nhan; Tran Hoang Quang Minh
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 8, No 1: March 2017
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (346.067 KB) | DOI: 10.11591/ijpeds.v8.i1.pp125-129

Abstract

LED technology had a huge development in recent years with major benefits: long-life, high-efficiency, excellent performance, compactness. In this work, an innovative method for improving the performance of multi-chip white LED lamps (MCW-LEDs) by adding the green Ce0.67 Tb0.33 MgAl11 O19:Ce,Tb (CeTb) phosphor to their in-cup phosphor compounding is proposed, investigated and demonstrated. Firstly, CeTb was mixed to the in-cup phosphor package of MCW-LEDs. Then by varying CeTb concentration, lumen output and angular color uniformity (ACU) of MCW-LEDs was calculated and analyzed. The results showed that the lumen output and the ACU of 7000 K and 8500 K MCW-LEDs increased significantly in comparison with others related works. This method is a prospective ideal for future improving LED manufacture.
Improving CCT-D and LO of the 6600K ICP-WLEDs by K2SiF6:Mn4+ Phosphor Phu Tran Tin; Anh Vu Le; Minh Tran; Nguyen Huu Khanh Nhan; Tran Thanh Trang
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 10, No 2: June 2019
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v10.i2.pp1059-1063

Abstract

In this research, we propose a novel recommendation for improving CCT-D and lumen output (LO) of the 6600K in-cup packaging white LEDs (ICP-WLEDs) by varying its particle concentration. By using Light Tools and Mat lab software based on the Mie Theory, we derive the influence of the red phosphor particle’s concentration on the D-CCT and LO. The results show that the CCT-D are significantly affected when the concentration of the red phosphor varying from 0% to 1.8%. The CCT-D decreases from 4000K to 2200K and LO increases from 800 lm to 1300 lm.
Co-Authors Anh Vu Le Minh Tran Phu Tran Tin Phu Tran Tin Tran Hoang Quang Minh Tran Thanh Trang