Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Investigation of remote-phosphor white light-emitting diodes with improved scattered photon extraction structure

Not Accessible

Your library or personal account may give you access

Abstract

In this study, an improved scattered photon extraction (SPE) package structure with a reflection plate over the remote phosphor layer is presented. The important factors for the remote phosphor layer in the conventional and improved SPE package structures, including the phosphor layer thickness and phosphor concentration, are also studied. The simulation results show that the yellow–blue ratio (YBR) of the conventional and improved SPE package structure increases with the phosphor concentration when the phosphor layer is thin and that the YBR is saturated when the layer is thick. The experimental results show that for both conventional and improved SPE package structure, the correlated color temperature (CCT) decreases as the phosphor concentration increases. However, the YBR of the improved SPE package structure is higher than that of the conventional SPE package structure for a given phosphor layer thickness and phosphor concentration. That is, in the conventional SPE package structure, it is necessary to increase the phosphor concentration and then increase the absorption of blue light to obtain more yellow light. Hence, for the improved SPE package structure, less phosphor is required in the phosphor layer for achieving the chosen CCT.

© 2015 Optical Society of America

Full Article  |  PDF Article
More Like This
Curved remote phosphor structure for phosphor-converted white LEDs

Shang-Ping Ying, Han-Kuei Fu, and Huang-Zong Tu
Appl. Opt. 53(29) H160-H164 (2014)

Patterned structure of REMOTE PHOSPHOR for phosphor-converted white LEDs

Hao-Chung Kuo, Cheng-Wei Hung, Hsin-Chu Chen, Kuo-Ju Chen, Chao-Hsun Wang, Chin-Wei Sher, Chia-Chi Yeh, Chien-Chung Lin, Cheng-Huan Chen, and Yuh-Jen Cheng
Opt. Express 19(S4) A930-A936 (2011)

Optical performance improvement of phosphor-in-glass based white light-emitting diodes through optimized packaging structure

Yang Peng, Ruixin Li, Xing Guo, Huai Zheng, and Mingxiang Chen
Appl. Opt. 55(29) 8189-8195 (2016)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (4)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved