Effect of drying temperature on structural and electrical properties of PANI:PVDF composite thin films and their application as buffer layer for organic solar cells

Spin coated polyaniline:polyvinylidene-fluoride (PANI: PVDF) composites films were prepared by the optimized mass ratios of 5:95. The effect of drying temperature on the structure, morphology and electrical conductivity of PANI: PVDF films were studied, and their use as buffer layer for organic solar cells performance was explored. The PANI: PVDF film which dried at 90 °C exhibit higher β-phase content in PVDF (Fβ=94%). Furthermore, solar cells conversion efficiency (η=3.06%) is better when using ITO/PVDF:PANI (dried at 90 °C) as photo-anode than that containing only ITO (η=0.96%) and ITO/PEDOT:PSS (η=1.78%).