Silicon poises for disruption

Lewotsky, Kristin

doi:10.1117/2.4200601.006

SPIE Professional

2006

DOI: 10.1117/2.4200601.006

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Silicon poises for disruption

Kristin Lewotsky¹

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2007

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“…Lighting poses an increasing market demand as one of the next great solid-state frontiers [1]. For that, white light emitting diodes (WLEDs) have attracted both scientific attention and commercial interest with their potential widescale use, for example, in architectural lighting, decorative lighting, flashlights and backlighting of large displays [2].…”

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White light generation using CdSe/ZnS core–shell nanocrystals hybridized with InGaN/GaN light emitting diodes

et al. 2007

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We introduce white light generation using CdSe/ZnS core–shell nanocrystals of single, dual, triple and quadruple combinations hybridized with InGaN/GaN LEDs. Such hybridization of different nanocrystal combinations provides the ability to conveniently adjust white light parameters including the tristimulus coordinates (x,y), correlated colour temperature (Tc) and colour rending index (Ra). We present the design, growth, fabrication and characterization of our white hybrid nanocrystal-LEDs that incorporate combinations of (1) yellow nanocrystals (λPL = 580 nm) on a blue LED (λEL = 440 nm) with (x,y) = (0.37,0.25), Tc = 2692 K and Ra = 14.69; (2) cyan and red nanocrystals (λPL = 500 and 620 nm) on a blue LED (λEL = 440 nm) with (x,y) = (0.37,0.28), Tc = 3246 K and Ra = 19.65; (3) green, yellow and red nanocrystals (λPL = 540, 580 and 620 nm) on a blue LED (λEL = 452 nm) with (x,y) = (0.30,0.28), Tc = 7521 K and Ra = 40.95; and (4) cyan, green, yellow and red nanocrystals (λPL = 500, 540, 580 and 620 nm) on a blue LED (λEL = 452 nm) with (x,y) = (0.24,0.33), Tc = 11 171 K and Ra = 71.07. These hybrid white light sources hold promise for future lighting and display applications with their highly adjustable properties.

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White light generation using CdSe/ZnS core–shell nanocrystals hybridized with InGaN/GaN light emitting diodes

et al. 2007

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Silicon poises for disruption

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White light generation using CdSe/ZnS core–shell nanocrystals hybridized with InGaN/GaN light emitting diodes

White light generation using CdSe/ZnS core–shell nanocrystals hybridized with InGaN/GaN light emitting diodes

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