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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:
- Eg - direct energy band gap of GaAs in eV
- T - absolute temperature in K
Numerical values
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 |
