Two organic D-p-A sensitizers, ACE267 and ACE254, with high extinction coefficient (e) composed triarylamine (D), bihexyl-cyclopentadithiophene with/without fluorobenzene (p) and cyanoacrylic acid (A) have been synthesized. Trough optimizing the processes of the fabrication by using spiro-OMeTAD as hole transporting materials, the all-solid-state photovoltaic device with the organic dye, ACE267 (e~53 000 M-1cm-1), shows the prominent solar-to-electricity efficiency (?) 4.11%, a short-circuit photocurrent density (JSC) of 7.89 mAcm-2, an open-circuit voltage (VOC) of 0.82 V, and a fill factor (FF) of 0.635. The solar cells with the organic sensitizer, ACE254 (e~51 000 M-1cm-1), however, exhibits outstanding a fill factor 0.726 (? = 3.66 %, JSC = 6.07mAcm-2, VOC = 0.83 V)

High-extinction-coefficient organic dyes for efficient all-solid-state DSSCs

239th National Meeting (2010)

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