Table 3 Layer parameters of different etls.

From: The performance of Cu2MnSnS4 based solar cells with CZTS as hole transport nanolayer

Parameter

ZnS

31, 32

CdS

24,31, 33

ZnO

23,33, 34

SnS2

10

TiO2

21,34,35,36

WO3

26

Thickness (µm)

0.05

0.05

0.05

0.05

0.05

0.05

Dielectric constant

8.32

8.9

9

10

9

12

Electron affinity

(eV)

4.5

4.4

4.35

4.24

3.9

3.8

Band gap Eg (eV)

3.68

2.4

3.3

2.24

3.2

3.2

Density of state NC(cm− 3)

2.2 × 1018

2.4 × 1018

1.8 × 1019

7.32 × 1018

2 × 1017

1.8 × 1019

Density of state, NV(cm− 3)

1.9 × 1019

1.8 × 1019

2.2 × 1018

1.8 × 1019

6 × 1017

7.1 × 1019

Electron mobility

µn (cm2/ Vs)

100

100

100

50

20

40

Hole mobility µp

(cm2/ Vs)

25

25

25

50

10

40

Donor doping ND (cm− 3)

1 × 1017

1 × 1017

1 × 1017

9.85 × 1018

2 × 1017

1 × 1016