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Energy band gap Eg of GaAs

Equation

The temperature dependency of the direct energy band gap Eg of GaAs can be calculated according to J. S. Blakemore J. Appl. Phys. 53 (1982) R123 by the equation

Eg (T) = 1.519 - 5.408 ⋅ 10-4 T2/( T + 204)

In this equation the symbols have the following meaning:

Numerical values

calculator calculator for Eg(T)   (uses javascript)

T (K) Eg(GaAs) (eV) λg (nm)
0 1.519 816
50 1.514 819
100 1.501 826
150 1.485 835
200 1.465 846
250 1.445 858
300 1.422 872
350 1.399 886
400 1.376 901
450 1.352 917
500 1.327 934
550 1.302 952
600 1.277 971
650 1.252 990
700 1.226 1011

Graph Eg(T)