Dinçalp H.Çimen O.Ameri T.Brabec C.J.Içli S.2024-07-222024-07-22201413861425http://akademikarsiv.cbu.edu.tr:4000/handle/123456789/16756A perylene diimide type small molecule (BI-PDI) has been synthesized through Suzuki coupling reaction between N,N′-bis(2,6-diisopropylphenyl)- 1,7-dibromoperylene-3,4,9,10-tetracarboxylic diimide and 2-(2-hydroxyphenyl)-7- phenyl-1H-benzimidazole-4-boronic acid. BI-PDI small molecule has showed an absorption band between 350 and 750 nm on thin films. HOMO and LUMO energy levels of BI-PDI dye have been calculated to be about -5.92 eV and -3.82 eV, respectively. Solution-processed bulk heterojunction (BHJ) solar cells have been constructed using BI-PDI as donor and [6,6]-phenyl-C61-butyric acid methyl ester (PC61BM) as acceptor or poly(3-hexylthiophene) (P3HT) as donor and BI-PDI as acceptor. The external quantum efficiencies (EQE) of the devices cover the most of the visible region between 400 and 700 nm for both configurations. Photovoltaic performances of BI-PDI-based organic solar cells are limited by the aggregation tendency of PDI structure and poor hole/electron mobilities of the active layer. © 2014 Elsevier B.V. All rights reserved.EnglishBenzimidazolesImidesLightPeryleneSolar EnergyCharge transferHeterojunctionsMoleculesPhotoluminescenceSolar cellsbenzimidazolebenzimidazole derivativeimideperyleneperylenediimideBenzimidazolesBulk heterojunction (BHJ)External quantum efficiencyLight-harvestingOptoelectronic propertiesPerylenediimidesPhotovoltaic performancePhotovoltaicsanalogs and derivativeschemistrylightsolar energySynthesis (chemical)Article10.1016/j.saa.2014.02.131