CONFERENCE PROCEEDINGS
Advanced Search
Home > Proceedings > Volume 12022 > Article
Presentation + Paper
3 March 2022 Rapid fabrication of YAG-Ce phosphor glass composites on borosilicate glass for white light LEDs
Javed Ali, Christi Madsen
Author Affiliations +
Proceedings Volume 12022, Light-Emitting Devices, Materials, and Applications XXVI; 120220M (2022) https://doi.org/10.1117/12.2609818
Event: SPIE OPTO, 2022, San Francisco, California, United States
Abstract
White light is obtained from converting blue light from an LED source with yellow light emission from phosphor such as YAG-Ce. Phosphors are incorporated in glass or a resin matrix to use with blue LED sources. A novel and a versatile method using a pulsed CO2 laser is presented which helps in rapid fabrication and reducing complexity of fabrication of phosphor glass composites on glass surface. Mixture of YAG-Ce phosphor and recycled borosilicate glass powder is deposited on borosilicate glass substrate using a settling method. The thickness and composition of the deposited layer can be easily controlled by altering the quantity and weight ratio of the mixture, thus making it easier to control the resultant color temperature of the sample. Localized surface melting of the glass is obtained by irradiating the samples with a pulsed CO2 laser. This creates an adhesion of the mixture to the substrate surface when cooled while encapsulating phosphor in a glass matrix. Phosphor to glass weight ratio as high as 50% can be easily obtained by this method. Phosphor is not exposed to high temperatures for an elongated period to cause thermal degradation, thus avoiding the need to develop special low melting point glass materials. The effects of different parameters such as composition and temperature are presented. This method allows the use of a CO2 laser to accomplish multiple functions like fabricating microstructures and polishing in a single step to manipulate the light output.
Conference Presentation
© (2022) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
Javed Ali and Christi Madsen "Rapid fabrication of YAG-Ce phosphor glass composites on borosilicate glass for white light LEDs", Proc. SPIE 12022, Light-Emitting Devices, Materials, and Applications XXVI, 120220M (3 March 2022); https://doi.org/10.1117/12.2609818
ACCESS THE FULL ARTICLE
ORGANIZATIONAL
Sign in with credentials provided by your organization.
INSTITUTIONAL
Select your institution to access the SPIE Digital Library.
SELECT YOUR INSTITUTION
PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.
PERSONAL SIGN IN
No SPIE Account? Create one
PURCHASE THIS CONTENT
SUBSCRIBE TO DIGITAL LIBRARY
50 downloads per 1-year subscription
Members: $195
Non-members: $335 ADD TO CART
25 downloads per 1 - year subscription
Members: $145
Non-members: $250 ADD TO CART
PURCHASE SINGLE ARTICLE
Includes PDF, HTML & Video, when available
Members: $17.00
Non-members: $21.00 ADD TO CART
PROCEEDINGS
 7 PAGES + PRESENTATION
DOWNLOAD PAPER SAVE TO MY LIBRARY
WATCH
PRESENTATION
GET CITATION
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Light emitting diodes
Borosilicate glass
Composites
Laser sintering
Laser processing
Phosphorescent materials
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top