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Voltage Drop, Wavelength Range and Material of Available Colors

From: www.njzlighting.com Aug 24, 2016
A LED (light-emitting diode) is a two-lead semiconductor light source. Conventional LEDs are made from a variety of inorganic semiconductor materials. The following table shows the available colors with wavelength range, voltage drop and material:
 
Color Voltage drop [ΔV] Wavelength [nm] Semiconductor material
Infrared ΔV < 1.63 λ > 760 Gallium arsenide (GaAs)
Aluminium gallium arsenide (AlGaAs)
Red 1.63 < ΔV < 2.03 610 < λ < 760 Aluminium gallium arsenide (AlGaAs)
Gallium arsenide phosphide (GaAsP)
Aluminium gallium indium phosphide (AlGaInP)
Gallium(III) phosphide (GaP)
Orange 2.03 < ΔV < 2.10 590 < λ < 610 Gallium arsenide phosphide (GaAsP)
Aluminium gallium indium phosphide (AlGaInP)
Gallium(III) phosphide (GaP)
Yellow 2.10 < ΔV < 2.18 570 < λ < 590 Gallium arsenide phosphide (GaAsP)
Aluminium gallium indium phosphide (AlGaInP)
Gallium(III) phosphide (GaP)
Green 1.9 < ΔV < 4.0 500 < λ < 570 Traditional green:
Gallium(III) phosphide (GaP)
Aluminium gallium indium phosphide (AlGaInP)
Aluminium gallium phosphide (AlGaP)
Pure green:
Indium gallium nitride (InGaN) / Gallium(III) nitride (GaN)
Blue 2.48 < ΔV < 3.7 450 < λ < 500 Zinc selenide (ZnSe)
Indium gallium nitride (InGaN)
Silicon carbide (SiC) as substrate
Silicon (Si) as substrate—under development
Violet 2.76 < ΔV < 4.0 400 < λ < 450 Indium gallium nitride (InGaN)
Purple 2.48 < ΔV < 3.7 Multiple types Dual blue/red LEDs,
blue with red phosphor,
or white with purple plastic
Ultraviolet 3 < ΔV < 4.1 λ < 400 Indium gallium nitride (InGaN) (385-400 nm)
Diamond (235 nm)
Boron nitride (215 nm)
Aluminium nitride (AlN) (210 nm)
Aluminium gallium nitride (AlGaN)
Aluminium gallium indium nitride (AlGaInN)—down to 210 nm
Pink ΔV ~ 3.3 Multiple types Blue with one or two phosphor layers,
yellow with red, orange or pink phosphor added afterwards,
White with pink plastic or white phosphors with pink pigment or dye over top.
White 2.8 < ΔV < 4.2 Broad spectrum Cool / Pure White: Blue/UV diode with yellow phosphor
Warm White: Blue diode with orange phosphor

The data are provided by NJZ Lighting Technology Co.,Ltd, one of the most reliable LED area light manufacturers in China. NJZ Lighting is aimed to be the best industrial lighting solution provider for Hazardous Locations and General Lighting. We provide a range of application solution from Petroleum, Mining, Chemical, Plastic, Heavy Industry to Warehouse, Street and Area Lighting. Our products include explosion proof light, high bay and low bay light, street and area light. The products are certificated to all international standards where they are sold, UL, CUL, TUV, SAA, DLC, ATEX, IK, CE, ROHS and etc. Now we are one of the top trusted and good reputation LED area light manufacturers with our premium quality products and excellent before and after sale service. But we are not satisfy with it, object is to be the No.1 LED area light manufacturer in China, in Asia, and then in the world. We will keep on working to realize it.



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