Share Email Print

Proceedings Paper

Color rendering ability and luminous efficacy enhancements in white light-emitting diodes
Author(s): Roya Mirhosseini; Martin Schubert; Sameer Chhajed; Jaehee Cho; Jong Kyu Kim; E. Fred Schubert
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

There exists a fundamental trade-off relation between color rendering index (CRI) and luminous efficacy; in other words, improvements in one are generally detrimental to the other. We analyze and demonstrate through simulation that phosphor-converted white LEDs with dual-blue emitting active regions, as opposed to single-blue emitting active regions, significantly enhance color rendering ability while maximizing the output luminous flux. The improvements are achieved over a broad range of correlated color temperatures.

Paper Details

Date Published: 18 August 2009
PDF: 7 pages
Proc. SPIE 7422, Ninth International Conference on Solid State Lighting, 742212 (18 August 2009);
Show Author Affiliations
Roya Mirhosseini, Rensselaer Polytechnic Institute (United States)
Martin Schubert, Rensselaer Polytechnic Institute (United States)
Sameer Chhajed, Rensselaer Polytechnic Institute (United States)
Jaehee Cho, Rensselaer Polytechnic Institute (United States)
Jong Kyu Kim, Rensselaer Polytechnic Institute (United States)
E. Fred Schubert, Rensselaer Polytechnic Institute (United States)

Published in SPIE Proceedings Vol. 7422:
Ninth International Conference on Solid State Lighting
Ian T. Ferguson; Christoph Hoelen; Jianzhong Jiao; Tsunemasa Taguchi, Editor(s)

© SPIE. Terms of Use
Back to Top
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?