Advancing the effective use of light for society and the environment.

Thursday, July 15, 2004

LRC to develop white-light LED illumination system using quantum dot nanomaterials
NYSERDA funds joint effort with Evident Technologies
Photo: LRC graduate student Hua Yu examines a quantum-dot LED.
LRC graduate student Hua Yu examines a quantum-dot LED.

The Lighting Research Center announced in June that it will work with Evident Technologies of Troy, N.Y., to develop and demonstrate new, efficient white light-emitting diodes (LEDs) for use in general illumination.

Funding for the project comes from the New York State Energy Research and Development Authority (NYSERDA). LED technology will lead to significant energy cost savings and environmental benefits as solid-state lighting begins to replace incandescent and other low-efficiency lighting sources in residential and commercial buildings.

Dr. Nadarajah Narendran, director of research at the LRC, said the LRC is committed to developing novel solid-state lighting systems that provide good color and higher efficiency than traditional light sources. “As we improve system efficiency, we will help to ensure their acceptance in the marketplace,” said Dr. Narendran. Market acceptance of new, efficient technologies is key to reducing energy consumption.

Evident Technologies will produce the quantum dot nanomaterials, a new semiconductor particle that has tunable color properties. Quantum dot-based lights will be more efficient than halogen or incandescent lights. Dr. Clinton T. Ballinger, CEO of Evident Technologies, said quantum dot nanomaterials enable the production of white-light LED-based lighting systems that will produce light with better color qualities than current white-light LEDs, so they will be appealing enough to use in the home or office.

According to Dr. Narendran, one of the main focuses in the solid-state lighting field today is to create LEDs with better color properties. Quantum dots offer the potential for creating continuous spectra white light. The colors of objects illuminated by continuous spectra light sources appear truer than those illuminated by current white LED light sources.

NYSERDA President Peter Smith said he hopes the authority’s investment in the project will accelerate the replacement of inefficient incandescent and halogen lights in New York state. This, he says, will save residents money on energy bills while protecting the environment by reducing greenhouse gases from fossil-fuel electricity generation in New York state.

About the LRC

The Lighting Research Center (LRC) is part of Rensselaer Polytechnic Institute and is the leading university-based research center devoted to lighting. Founded in 1988, the Lighting Research Center has built an international reputation as a trusted and reliable source for objective information about lighting technologies, applications, and products. Its mission is to advance the effective use of light and create a positive legacy of change for society and the environment.



2004 Rensselaer Polytechnic Institute, Troy, NY 12180 USA.

Rennselear Polytechnic Institute