Eur. Phys. J. Appl. Phys. 36, 225-229 (2006)
https://doi.org/10.1051/epjap:2006146

Donor-acceptor heterojunction solar cells based on perylene dimide and perylene bisbenzimidazole^*

¹ Ege University, Solar Energy Institute, 35100, Bornova, Izmir, Turkey
² Linz Institute for Organic Solar Cells (LIOS), Physical Chemistry, Johannes Kepler University, 4040 Linz, Austria

Corresponding authors: sule.erten@ege.edu.tr siddik.icli@ege.edu.tr

Received: 25 July 2006
Revised: 11 October 2006
Accepted: 17 October 2006
Published online: 10 January 2007

Abstract

We have fabricated heterojunction solar cells comprising active layers of perylene diimide (PDI) or perylene bisbenzimidazole (CONPER, conjugated perylene dye) as electron acceptor and ZnPC as donor. Bilayer solar cells were produced by successive evaporation of zinc phthalocyanine (ZnPC) and perylene diimide (PDI) or perylene bisbenzimidazole (CONPER) on glass substrates coated with indium doped tin oxide. Active layers with different thickness were evaporated. The bilayer cells were characterized under simulated AM 1.5 illumination (100 mW/cm²). The best results were obtained for the device structure of ITO/PEDOT/ZnPC (40 nm)/perylene bisbenzimidazole (60 nm)/Al (70 nm).