CIGS

CdS

ZnS

ZnSe

In2S2

Thickness (µm)

2

varied

Varied

Varied

varied

Band gap (eV)

1.2

2.400

3.500

2.900

2.800

Electron affinity (eV)

4.5

4.500

4.500

4.090

4.700

Dielectric permittivity (relative)

13.6

10.000

10.000

10.000

13.500

CB density of state (cm3)

2 × ×1018

1.5 × 1018

1.5 × 1018

1.5 × 1018

1.8 × 1019

VB density of state (cm3)

1.5 × 1019

1.8 × 1018

1.8 × 1018

1.8 × 1019

4.0 × 1013

µn electron mobility (cm2/Vs)

100

50

50

50

400

µh hole mobility (cm²/Vs)

12.25

20

20

20

210

Donor density ND (cm−3)

1 × 1016

0

0

0

10

Acceptor density NA (cm−3)

0

1 × 1017

1 × 1017

5.5 × 107

1.0 × 1018

Electron thermal velocity (cm/s)

3.9 × 107

1.0 × 107

1 × 107

1.0 × 107

1.0 × 107

Hole thermal velocity (cm/s)

1.4 × 107

1.0 × 107

1 × 107

1.0 × 107

1.0 × 107