Table 1 Input parameters and calculated characteristics of excitons, their interactions, and the biexciton.

μ_r (m₀)³³

0.350

0.275

0.175

0.200

r₀ (Å)³³

39

34

34

45

E_b (meV)

620

644

566

481

a_x (Å)

8.38

8.96

11.48

12.11

\({U}_{\Gamma -\Gamma }^{ex}\) (\({E}_{b}{a}_{x}^{2}\))

2.043

2.173

2.341

2.187

\({U}_{{\Gamma }_{2}-{\Gamma }_{3}}^{ex}\) (\({E}_{b}{a}_{x}^{2}\))

0.952

0.863

0.602

0.539

\({{{{\mathcal{E}}}}}_{0}\) (meV)

64.9

53.4 (60¹²)

18.5

12.9

κ³³

4.4

4.45

4.35

4.5

E_b (meV)

226 (231³³)

215 (221³³)

174 (180³³)

157 (167³²)

a_x (Å)

10.38

11.53

15.39

15.69

\({{{{\mathcal{E}}}}}_{0}\) (meV)

24.0 (21²⁷)

13.2

1.5

1.4 (16–17¹⁸)