Journal
JOURNAL OF DISPLAY TECHNOLOGY
Volume 9, Issue 6, Pages 419-426Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JDT.2012.2225407
Keywords
Chromaticity control; color temperature; light-emitting diode; liquid crystals; quantum dots; quantum yield; smart lighting; solid-state lighting; Stark effect; wavelength downconversion
Funding
- Sandia's Solid-State-Lighting Science Energy Frontier Research Center
- U.S. Department of Energy, Office of Basic Energy Sciences
- U.S. Department of Energy's National Nuclear Security Administration [DE-AC04-94AL85000]
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Solid-state lighting is currently based on blue light-emitting diodes combined with wavelength downconversion via phosphors. Replacing the phosphors with quantum dots has a number of potential advantages, including narrowband and size-tailorable emission spectra. Here, we point out another advantage: the ability to perform real-time tuning of chromaticity of solid-state lighting by altering quantum dot absorption or emission wavelengths and oscillator strengths using electric fields. We discuss a possible architecture for such a solid-state lamp, and the chromaticity ranges that could be obtained for given ranges of absorption or emission wavelength and oscillator strength changes.
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