E_g (eV)

LDA

HSE

Oth. Cal.

Exp.

AlN

RS(IG)

4.32

4.40

4.47 [30] ,

5.82 [31]

4.40 [32]

WZ(DG)

4.23

5.45

4.62 [23]

6.28 [33]

ScN

RS(IG)

0.10

1.30

−0.15 [23] ,

−0.19 [34]

1.30 [36]

WZ(IG)

2.90

3.20

2.91 [23] ,

2.90 [35]

3.50 [37]