Hybrid Down-Converting Structures for Solid State Lighting
- PhosphorTech
- Georgia Inst. of Technology, Atlanta, GA (United States)
Achieving higher luminous efficacy in phosphor converted light emitting diodes (pcLED) requires breakthroughs in down-converting materials that provide high conversion efficiency, tunable narrow bandwidth emission, and temperature/chemical stability. While conventional bulk phosphors are currently the dominant down-converters used in high power solid-state lighting (SSL) applications, their performance is limited by intrinsic properties such as high scattering cross-sections and large emission bandwidth. On the other hand, conventional luminescent nanocrystals (e.g, quantum dots or QDs) have high self-absorption and poor thermal and chemical stability for HB LEDs. Ultimately, these materials will enable a new generation of solid state lighting devices with high luminous efficacies, high color and thermal stability, and with spectral efficiency near the theoretical maximum luminous efficacy of radiation (LER), as a result of their color tunability and narrow bandwidths (FWHM < 30nm).
- Research Organization:
- PhosphorTech Corp., Kennesaw, GA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- SC0015159
- OSTI ID:
- 1570157
- Report Number(s):
- DOE-PTC-DE-SC0015159
- Country of Publication:
- United States
- Language:
- English
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