Table 2 Photovoltaic parameters of the solar cells for Sample A, B1, B2, C and C-RbF

From: Highly efficient narrow bandgap Cu(In,Ga)Se2 solar cells with enhanced open circuit voltage for tandem application

Sample

ΔGGI

VOC (mV)

JSC (mA/cm2)

FF (%)

PCE (%)

Eg (eV)

VOC, def (V)

A

0.18

601

39.21

75.64

17.82

1.03

0.429

B1

0.22

614

40.40

76.30

18.93

1.02

0.406

B2

0.22

601

41.40

75.28

18.74

1.01

0.409

C

0.30

620

41.46

75.77

19.47

1.01

0.390

C-RbF

0.30

642 (637)

41.70 (41.62)

76.06 (76.44)

20.37 (20.26)

1.01

0.368 (certified)

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