By Topic

High-efficiency AlGaInP light-emitting diodes for solid-state lighting applications

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $31
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Gessmann, Th. ; Department of Electrical, Computer, and Systems Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180 ; Schubert, E.F.

Your organization might have access to this article on the publisher's site. To check, click on this link: 

AlGaInP lattice matched to GaAs is suited for light-emitting diodes (LEDs) operating in the red, orange, yellow, and yellow–green wavelength range. Such long-wavelength visible-spectrum devices will play an important role in solid-state lighting applications. This review discusses the major classes of AlGaInP device structures, including absorbing-substrate (AS) LEDs, absorbing substrate LEDs enhanced by distributed-Bragg-reflectors (DBRs), transparent substrate (TS) LEDs, thin-film (TF) LEDs, and LEDs using omnidirectional reflectors (ODRs). Some of these device structures have well-known deficiencies: A significant fraction of light is absorbed in the GaAs substrate in AS-LEDs; DBRs are essentially transparent at oblique angles of incidence leading to substantial optical losses. More recent developments such as TS-LEDs and TF-LEDs avoid these drawbacks. High-reflectivity, electrically conductive ODRs were recently developed that considerably outperform conventional distributed Bragg reflectors. LEDs using such conductive ODRs can replace DBRs in AlGaInP LEDs and are potential candidates for low-cost high-efficiency LEDs suitable for high-power solid-state lighting applications. © 2004 American Institute of Physics.

Published in:

Journal of Applied Physics  (Volume:95 ,  Issue: 5 )