Table 3 VBO and CBO on interfaces.

From: Interface engineering and defect passivation for enhanced hole extraction, ion migration, and optimal charge dynamics in both lead-based and lead-free perovskite solar cells

Interface

CBO (eV)

VBO (eV)

Perovskite/ETL

 MAPbI3/TiO2

− 0.1

1.75

 MAGeI3/TiO2

− 0.02

1.32

Perovskite/HTL

 MAPbI3/spiro-OMeTAD

1.7

− 0.25

 MAGeI3/spiro-OMeTAD

1.78

− 0.68

Perovskite/passivation

 MAPbI3/BiI3

− 0.2

0.37

 MAGeI3/BiI3

− 0.12

− 0.06

Passivation/HTL

 MAPbI3/BiI3/spiro-OMeTAD

1.9

0.62

 MAGeI3/BiI3/spiro-OMeTAD

1.9

0.62

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