Table 4 Electron affinity of absorber with the corresponding CBO and VBO at the interfaces of novel Ag2BaTiSe4 solar cells with diverse buffers.

From: Highly efficient emerging Ag2BaTiSe4 solar cells using a new class of alkaline earth metal-based chalcogenide buffers alternative to CdS

Affinity (eV)

Absorber/buffer interface

Absorber/MoSe2 interface

MgS

SrS

BaS

CaS

CdS

CBO (eV)

VBO (eV)

CBO (eV)

VBO (eV)

CBO (eV)

VBO (eV)

CBO (eV)

VBO (eV)

CBO (eV)

VBO (eV)

CBO (eV)

VBO (eV)

4.1

− 0.2

1.72

0.1

1.22

− 0.05

1.87

− 0.5

1.46

− 0.4

1.64

− 0.02

0.24

4.2

− 0.1

1.62

0.2

1.12

0.05

1.77

− 0.4

1.36

− 0.3

1.54

0.08

0.14

4.3

0

1.52

0.3

1.02

0.15

1.67

− 0.3

1.26

− 0.2

1.44

0.18

0.04

4.4

0.1

1.42

0.4

0.92

0.25

1.57

− 0.2

1.16

− 0.1

1.34

0.28

− 0.06

4.5

0.2

1.32

0.5

0.82

0.35

1.47

− 0.1

1.06

0

1.24

0.38

− 0.16

4.6

0.3

1.22

0.6

0.72

0.45

1.37

0

0.96

0.1

1.14

0.48

− 0.26

4.7

0.4

1.12

0.7

0.62

0.55

1.27

0.1

0.86

0.2

1.04

0.58

− 0.36

  1. Optimum values are in [bold].
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