A terrace bilayer (TB) p–n junction of phthalocyanine (H2Pc) and 3,4,9,10-perylenetetracarboxylic-bis-benzimidazole (PTCBI) was studied by the use of scanning Kelvin probe microscopy, and its electronic properties was analyzed through the contact potential difference (VCPD) data for single layer region (SLR), bilayer region (BLR), and boundary region (BDR). A micrometer-localized positive potential was found in the BDR of TB of p-type on n-type, which the VCPD value was more +0.1 V than that of the BLR. Both potential gain and the design were utilized for efficient photocatalyst as oxidation power without changing molecular component, just based on the geometrical control.
- Mohd Fairus Ahmad
- Motoya Suzuki
- Keiji Nagai
