Abstract
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.
© 2013 IEEE
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