Abstract
We report electroabsorption (EA) studies of electric fields in bilayer molecular organic solar cells made from zinc phthalocyanine (ZnPc) and a methyl substituted perylene pigment (MPP). We have detected an electric field at the metal/organic interface which is sensitive to the external DC bias. The interface field has a different spectral signature from that of the bulk of the two layers, which we attribute to interface species such as charge transfer-induced dipoles. The electric field is proportional to the applied bias in devices containing only ZnPc or MPP, but rectifying behavior is observed in the bilayer solar cell.
Original language | English (US) |
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Journal | Solar Energy Materials and Solar Cells |
Volume | 63 |
Issue number | 1 |
DOIs | |
State | Published - Jun 15 2000 |
Externally published | Yes |