Optical properties of Gallium Phosphide (GaP)

Gap - Gallium Phosphide

Optical properties

Infrared refractive index 3.02
Radiative recombination coefficient 10-13 cm3/s

Infrared refractive index

n = k1/2= 2.932(1 + 10-4T) (80 < T < 300 K)
Refractive index n versus photon energy.
Solid curve is the theoretical calculation.
Points represent experimental data, 300 K
(Adachi [1989]).
Normal incidence reflectivity versus photon energy, 300 K
(Aspnes and Studna [1983]).
Low-level absorption spectrum of n-type GaP
(no = 1·1016 cm-3) at different temperature,
(Dean and Thomas [1966]).
The absorption coefficient versus photon energy, 300 K
(Aspnes and Studna [1983]).
Free carrier absorption coefficient versus wavelength at different temperatures,
no = 1·1018 cm-3
T (K): 1. 80; 2. 295.
(Spitzer et al. [1959]).