Quality LED lighting and displays using nanocrystals

Today lighting efficiency and quality are essential to wide-scale utilization of semiconductor lighting technologies. To address these challenges, we develop and demonstrate new classes of color-conversion LEDs
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integrating nanophosphors of semiconductor quantum dots for high-photometric quality
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and those enhanced using excitonics (controlling exciton-exciton interactions) through Förster-type nonradiative energy transfer (NRET)
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. We study intrinsic performance limits and fundamental photometric tradeoffs of such narrow-emitter nanophosphors investigating a large scale (>200M) of designs.
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We show that it is possible to achieve high levels of photometric performance with a luminous efficacy of optical radiation >380 lm/W
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and a color-rendering index >90 in the warm-white region, important for spectrally high-efficiency, high-quality lighting.
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We show eco-friendly nanocrystals tuned across the visible
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and large-area sheets of such nanocrystals for remote phosphor applications
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.