Chemical composition of LEDs

Wavelengths (nm)

Manufacturer’s quoted valuesa

Experimental values

Mean wavelength

FWHM

Mean wavelength

FWHM

GaP-GaP

555 (Green)

25

490 (Green)

154

GaAsP-GaP

610 (Orange)

35

492 (Yellow)

150

GaAlAs-GaAlAs

660 (Red)

25

687 (Orange)

190

GaAlAs-GaAs

700 (Red)

25

887 (Red)

205

GaAlAs-GaAlP

880 (Near IR)

80

GaAs-GaAs

940 (IR)

45