Sumitomo Electric Industries, Ltd. (Osaka, Japan) has developed 6-inch diameter GaN (gallium nitride) substrates to be used for white LEDs. The front face of the GaN substrates is a polarized c-plane. Polarity refers to a change in the electrical characteristics of a crystal caused by the preferred orientation of the constituent elements, and c-plane is a crystal face of a GaN substrate generally used for white LEDs and blue-violet or blue lasers. With positively-charged Ga and negatively-charged N oriented alternately, c-plane exhibits a strong polarization. This polarization decreases light-emitting efficiency in the green region. The GaN substrates have excellent thermal conductivity.
Top Stories
Videos: Manufacturing & Prototyping
Stratolaunch Approaches Hypersonic Speeds in First Talon-A Flight
Blog: Automotive
A Hack to Trick Automotive Radar
Blog: Medical
3D Ice Printing Artificial Blood Vessels
Blog: Power
Tesla Valve-Inspired Design Could Improve the Performance of Rotating...
Podcasts: RF & Microwave Electronics
Countering Illegally Operated Drones at Airports, Stadiums, and Prisons
Blog: Energy
Fast-Charging Li Battery Could Make ‘Range Anxiety’ a Thing of the Past
Webcasts
On-Demand Webinars: Manufacturing & Prototyping
Unveiling Trends in the Battery Industry: Insights from Third-Party Testing
Upcoming Webinars: AR/AI
From Data to Decision: How AI Enhances Warfighter Readiness
Upcoming Webinars: Power
April Battery & Electrification Summit
Upcoming Webinars: Transportation
Tech Update: 3D Printing for Transportation in 2024
Upcoming Webinars: Materials
Unleashing Epoxy's Potential: Ensuring Hermetic Sealing in Modern Electronics