LED colors

One of the major characteristics of an LED uses a different color. Initially what is full form of LED colors were restricted only red LEDs were available. But after semiconductor processes were improved and new research was undertaken to investigate in direction of new LEDs many different colors were available. 

Different types of LED colors with wavelength given below :

1. Infrared 

Wavelength - > 760

Voltage drop -  < 1.9

Semiconductor material - Gallium arsenide, Aluminium gallium arsenide

2.  Red

Wavelength - 610-760

Voltage drop - 1.6 TO 2.0

Semiconductor material - Galium arsenide phosphide, Aluminium gallium arsenide

3. Violet

Wavelength - 400-450

Voltage drop - 2.8 to 4.0

Semiconductor material - Indium gallium nitride

4. Purple

Wavelength - multi types

Voltage drop - 2.4 to 3.7

Semiconductor material - Blue with red phosphor, White with purple plastic, Dual blue/red LEDs

5. Ultraviolet

Wavelength - <400

Voltage drop - 3.1 to 4.4

Semiconductor material - Diamond, boron nitride, aluminium nitride

6. Pink

Wavelength - Multi types

Voltage drop - 3.3

Semiconductor material - Blue with phosphor, white with pink pigment, yellow with red, orange, or pink phosphor

7. White 

Wavelength - Broad spectrum

Voltage drop - 3.5

Semiconductor material - Silicon. silicon carbide, Zinc selenide

8. Orange 

Wavelength - 590-610

Voltage drop - 2.0 to 2.1

Semiconductor material - Gallium arsenide phosphide, Gallium phosphide

9. Yellow 

Wavelength - 570-590

Voltage drop - 2.1 to 2.2

Semiconductor material - Gallium arsenide phosphide, Gallium phosphide

10. Green

Wavelength - 500-570

Voltage drop - 1.9 to 4.0

Semiconductor material - Aluminium gallium phosphide, Gallium indium phosphide, Indium gallium nitride