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Joo Young Shim, Byoung Hoon Lee, Suhee Song, Heejoo Kim, Ju Ae Kim, Il Kim, Kwanghee Lee and Hongsuk Suh Synthesis and properties of the conjugated polymers with indenoindene and benzimidazole units for organic photovoltaics Journal of Polymer Science Part A: Polymer Chemistry 51

Article first published online: 12 OCT 2012 | DOI: 10.1002/pola.26385

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Dihydroindeno[2,1-a]indene, MBI and thiophene (or bithiophene) units were incorporated using Stille and Suzuki polymerization to generate PININEDTMBIs (or PININEBBTMBIs). In case of the most efficient polymer, PININEBBTMBI, the device with the configuration of ITO/PEDOT:PSS/polymer:PC71BM(1:4w/w)/Al, annealed at 100 °C for 10min demonstrated a VOC of 0.78 V, a JSC of 6.66 mA/cm2, and a FF of 0.41, leading tothe power conversion efficiency of 2.11%, under white light illumination (AM 1.5 G, 100 mW/cm2).

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