Cree used a comprehensive approach to reduce the costs of various optical, thermal, and electrical subsystems without impacting performance, resulting in an LED troffer luminaire platform emitting at ~3500K CCT at a CRI of 93. These developments built on Cree’s high-brightness, low-cost LED platforms to design a novel LED component architecture that will enable low-cost troffer luminaire designs with high total system efficacy. (September 2014) Learn more.

SUNY/Buffalo Developing High-Efficiency Colloidal Quantum Dot Phosphors

The State University of New York at Buffalo is working to reduce the cost and increase the performance of LEDs for general illumination by developing high-efficiency colloidal quantum dot phosphors to replace conventional phosphors (i.e., those placed directly on the chip). Colloidal quantum dot phosphors are nanocrystal emitters and contain no rare-earth elements. What's more, it's possible to tune the emission wavelength merely by changing their size. (July 2013) Learn more.

Philips Lumileds Develops a Low-Cost, High-Power, Warm-White LED Package

With the help of DOE funding, Philips Lumileds has developed a low-cost, high-power, warm-white LED package for general illumination. Over the course of the two-year project, Philips Lumileds demonstrated record efficacies, achieved through progress in high-efficiency royal blue pump LED development. (June 2013) Learn more.

PPG Industries Develops a Low-Cost Integrated OLED Substrate

With the help of DOE funding, PPG Industries Inc., has developed a low-cost OLED substrate, using inexpensive soda-lime "float" glass that is manufactured at high volume for the architectural industry. PPG demonstrated significant material cost reduction using this substrate and also demonstrated scalable light-extraction technologies that increase the efficiency of the OLED lighting devices by more than 30 percent. (June 2013) Learn more.

Soraa Is Optimizing the Use of Non-Polar and Semi-Polar Substrates to Improve Emitter Efficiency Under High-Current Operation

Soraa is working to find the optimal semipolar orientation for LED epitaxial growth, building on their GaN-on-GaN technology, which grows the GaN epitaxial layer on low defect density native GaN substrate instead of the conventional approach of growing heteroepitaxially. Soraa has already demonstrated 450 nm emitting nonpolar LEDs with internal quantum efficiencies of almost 90 percent and very low droop characteristics. (June 2013) Learn more.

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