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Improving optical performance of multi-chip white LEDs by bi-layers remote-packaging phosphors
NGUYEN HUU KHANH NHAN1, TRAN HOANG QUANG MINH1,* , HUYNH VAN VAN2, PHƯƠNG T. TRAN2, TAN N. NGUYEN3, MIROSLAV VOZNAK3
- OptoelectronicsResearch Group, Faculty of Electrical and Electronics Engineering, Ton Duc Thang University, Ho Chi Minh City, Vietnam
- Faculty of Electrical and Electronics Engineering, Ton Duc Thang University, Ho Chi Minh City, Vietnam
- VSB-Technical University of Ostrava, 17. listopadu 15/2172, 708 33 Ostrava - Poruba, Czech Republic.
In the last some decades, White LEDs (WLEDs) with the optimal advances such as durability, chromatic performance, lowpower consumption, long-lifetime, and environmentally friendliness are popularly used in industrial and general lighting all over the world. From this point of view, we present an innovative coating model for the multi-chip White LEDs (MCW-LEDs) in a direction to improving their optical performance. This model base on the WLEDs with bi-layers Red-Emitting and Yellow-Emitting Phosphor, which is set up remotely from the blue WLEDs chip. With using the Mat lab and the industrial Light Tools software, the optical performance of the WLEDs could be improved significantly by the bi-layer remotepackaging phosphors. Furthermore, the research results indicated that the proposed coating model of MCW-LEDs could be a prospective solution for manufacturing remote-packaging WLEDs in the near future..
Remote-packaging, Bi-layer phosphors, Optical performance, WLEDs.
Submitted at: April 1, 2017
Accepted at: April 5, 2018
NGUYEN HUU KHANH NHAN, TRAN HOANG QUANG MINH, HUYNH VAN VAN, PHƯƠNG T. TRAN, TAN N. NGUYEN, MIROSLAV VOZNAK, Improving optical performance of multi-chip white LEDs by bi-layers remote-packaging phosphors, Journal of Optoelectronics and Advanced Materials Vol. 20, Iss. 3-4, pp. 93-97 (2018)
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