Issued quarterly (4 issues per year)

ISSN (Online): 2588-123X
ISSN (Print): 1859-2244
Researchgate Linkedin EmailFacebook Twitter
  • Home
  • Editorial Board
  • Guidelines
  • Policies
  • Submissions
  • Search
  • Archives
  • Announcements
  • Statistics

Publication Information


Publisher
Ton Duc Thang University
Honorary Editor-in-Chief
Prof. Le Vinh Danh
Deputy Editor-in-Chief
Prof. Nguyen Thoi Trung
Chairman of the Editorial Board
Prof. Václav Snášel
Vice Chairman of the Editorial Board
Prof. Ivan Zelinka
Managing Editor
Assoc.Prof. Nguyen Truong Khang
Editorial Board
Prof. Timon Rabczuk
Prof. Hari Mohan Srivastava
Prof. Seung-Bok Choi
Prof. Carlo Cattani
Prof. Phan Thien Nhan
Prof. Nguyen Minh Tho
Prof. Adel M. Alimi
Prof. Petr Musílek
Prof. Jaroslav Pokorný
Prof. Juan Velasquez
Prof. Michal Wozniak
Prof. Hana Řezanková
Prof. Preecha Yupapin
Prof. Hendrik Richter
Prof. Mohammed Chadli
Assoc. Prof. Miroslav Vozňák
Assoc. Prof. Roman Senkerik
Assoc. Prof. Juan Carlos Burguillo Rial
Assoc. Prof. Akhil Garg
Assoc. Prof. Pham Thanh Phong
Assoc. Prof. Nguyen Pham Trung Hieu
Assist. Prof. Mahdi Shariati
Assist. Prof. Aleš Zamuda
Assist. Prof. Mai Ngoc Lan
User

Guide for Authors

  • View 'Guide for Authors' online

Submit Your Paper

In order to submit your paper, please login and navigate to the author page.

If you do not have an account, please consider registering one.

Track Your Paper

Track accepted paper
Once your article has been accepted you will receive an email from Author Services. This email contains a link to check the status of your articles.

Click here to track your accepted papers
Journal Content

Browse
  • By Issue
  • By Author
  • By Title

Abstracting/Indexing 

  • Home
  • Vol 4, No 4 (2020)
  • Tran

The Application of Mg2TiO4:Mn4+ and NaYF4:Er3+;Yb3+ and Double Convex Structure in Improving Optical Performance of Phosphor-in-Glass Based White Light-Emitting Diodes

Thinh Cong Tran, Guo-Feng Luo, Thi Phuong Loan Nguyen, Van Tho Le, Doan Quoc Anh Nguyen

Abstract


Improving lighting performance of WLEDs, especially the color quality, has always been a priority in lighting researches. Recently, the conventional remote phosphor configuration is unable to fulfill the needs of the modern lighting market, particularly the high color expression demand has inspired the search for a novel manufacturing procedure. In this study, based on the results from previous studies, the struggles in enhancing lighting performances are pointed out, and a solution, the dual-layer remote phosphor, is proposed from our conducted experiments. Through experiments with NaYF4:Er3+;Yb3+ and Mg2TiO4:Mn4+ phosphors, the dual-layer phosphor is proven to be effective in improving lighting properties such as color rendering index (CRI) and color quality scale (CQS). The research method involves structuring and experimenting with the phosphor configuration of the yellow phosphor YAG:Ce3+ layer with a green NaYF4:Er3+;Yb3+ or a red Mg2TiO4:Mn4+ phosphor layer whose phosphor concentrations are varied. The results show that the red phosphor Mg2TiO4:Mn4+ particles benefit the CRI and CQS because the values of CRI and CQS increase with red phosphor Mg2TiO4:Mn4+ concentration. On the other hand, the green phosphor NaYF4:Er3+;Yb3+ is inferior in improving CRI and CQS but exhibits better luminous flux. Despite being useful in enhancing lighting performance, the phosphor concentration must be kept below a certain level, which will be mentioned in the article, to prevent damages. These results are verified using Mie scattering theory and Lambert-Beer's law and can be utilized in producing WLEDs with high lighting quality.

 

Creative Commons License

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium provided the original work is properly cited.


Keywords


WLEDs, lumen output, color quality, NaYF4:Er3+;Yb3+, Mg2TiO4:Mn4+, Miescattering theory.

Full Text:

PDF

Time cited: 0

Download citation



DOI: http://dx.doi.org/10.25073/jaec.202044.294

Refbacks

  • There are currently no refbacks.


Copyright (c) 2020 Journal of Advanced Engineering and Computation

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.


Owner: Ton Duc Thang University. All rights reserved.
License No: 507/GP-BTTTT, issued: 18th November 2016
Contact address: 19, Nguyen Huu Tho Street, Tan Phong Ward, District 7, Ho Chi Minh City
Tel: +84-28 3775 5037  Fax: +84-28 3775 5055
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.