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

机译:使用CdSe / ZnS核壳纳米晶体与InGaN / GaN发光二极管杂交产生白光

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摘要

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 (T_c) and colour rending index (R_a). We present the design, growth, fabrication and characterization of our white hybrid nanocrystal-LEDs that incorporate combinations of (1) yellow nanocrystals (lambda_(PL) = 580 nm) on a blue LED (lambda_(EL) = 440 nm) with (x, y) = (0.37, 0.25), T_c = 2692 K and R_a = 14.69; (2) cyan and red nanocrystals (lambda_(PL) = 500 and 620 nm) on a blue LED (lambda_(EL) = 440 nm) with (X, y) = (0.37, 0.28), T_c = 3246 K and R_a = 19.65; (3) green, yellow and red nanocrystals (lambda_(PL) = 540, 580 and 620 nm) on a blue LED (lambda_(EL) = 452 nm) with (x, y) = (0.30, 0.28), T_c = 7521 K and R_a = 40.95; and (4) cyan, green, yellow and red nanocrystals (lambda_(PL) = 500, 540, 580 and 620 nm) on a blue LED (lambda_(EL) = 452 nm) with (x, y) = (0.24, 0.33), T_c = 11171 K and R_a = 71.07. These hybrid white light sources hold promise for future lighting and display applications with their highly adjustable properties.
机译:我们介绍使用CdSe / ZnS核壳纳米晶体(与InGaN / GaN LED混合的单,双,三和四重组合)产生白光的方法。不同纳米晶体组合的这种杂交提供了方便地调节白光参数的能力,所述白光参数包括三刺激坐标(x,y),相关色温(T_c)和显色指数(R_a)。我们介绍了我们的白色混合纳米晶体LED的设计,生长,制造和表征,它在蓝色LED(lambda_(EL)= 440 nm)上结合了(1)黄色纳米晶体(lambda_(PL)= 580 nm)与( x,y)=(0.37,0.25),T_c = 2692K,R_a = 14.69; (2)蓝色LED(lambda_(EL)= 440 nm)上的青色和红色纳米晶体(lambda_(PL)= 500和620 nm),其中(X,y)=(0.37,0.28),T_c = 3246 K和R_a = 19.65; (3)蓝色,LED(lambda_(EL)= 452 nm)上的绿色,黄色和红色纳米晶体(lambda_(PL)= 540、580和620 nm),其中(x,y)=(0.30,0.28),T_c = 7521 K和R_a = 40.95; (4)在蓝色LED(lambda_(EL)= 452 nm)上的青色,绿色,黄色和红色纳米晶体(lambda_(PL)= 500、540、580和620 nm),其中(x,y)=(0.24, 0.33),T_c = 11171 K,R_a = 71.07。这些混合白光源具有高度可调节的特性,有望在未来的照明和显示应用中发挥作用。

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