Close

Search

Search Menu
Photonics Media Photonics Buyers' Guide Photonics EDU Photonics Spectra BioPhotonics EuroPhotonics Industrial Photonics Photonics Showcase Photonics ProdSpec Photonics Handbook
More News
share
Email Facebook Twitter Google+ LinkedIn Comments

LEDs Emit Orange for White Light

Photonics Spectra
Sep 2002
Researchers at National Cheng Kung University, Chung Shan Institute of Science and Technology, Nan-Jeon Institute of Technology and Chin-Min College, all in Taiwan, have developed ZnCdSeTe-ZnSSe multiple-quantum-well LEDs that promise to enable phosphorless solid-state white-light illumination. They propose integrating the 578-nm emitter with a blue-green ZnSe-based LED on a substrate of GaAs to yield a single-chip source that does not rely on wavelength conversion.

They fabricated the LEDs in a P-down geometry on GaAs by molecular beam epitaxy. The final devices displayed an external quantum efficiency of only 0.08 percent, which they hope to improve by adopting an N-down scheme. The work appeared in the August IEEE Photonics Technology Letters.

As We Go To PressBreaking Newslight sourcesPresstime BulletinLEDs

Comments
Terms & Conditions Privacy Policy About Us Contact Us
back to top

Facebook Twitter Instagram LinkedIn YouTube RSS
©2018 Photonics Media, 100 West St., Pittsfield, MA, 01201 USA, info@photonics.com
x Subscribe to Photonics Spectra magazine - FREE!
We use cookies to improve user experience and analyze our website traffic as stated in our Privacy Policy. By using this website, you agree to the use of cookies unless you have disabled them.