We have prepared a novel piperidine-donor-substituted perylene sensitizer, PK0002 , and studied the photovoltaic performance in dye-sensitized solar cells (DSSCs). Physical properties and photovoltaic performance of this new perylene derivative PK0002 are reported and compared with those of unsubstituted perylene sensitizer, PK0003. PK0002 , when anchored to nanocrystalline TiO 2 films, achieves very efficient sensitization across the whole visible range extending up to 800 nm. The incident photon-to-current conversion efficiency (IPCE) spectrum was consistent with the absorption spectrum and resulted in a high short-circuit photocurrent density ( Jsc ) of 8.8 mA cm -2 . PK0002 showed higher IPCE values than PK0003 in the 520–800 nm region. Under standard AM 1.5 irradiation (100 mW cm -2 ) and using an electrolyte consisting of 0.6 M dimethylpropyl-imidazolium iodide, 0.05 M I 2 , 0.1 M LiI, and 0.5 M tert -butylpyridine in acetonitrile, a solar cell containing sensitizer PK0002 yielded a short-circuit photocurrent density of 7.7 mA cm -2 , an open-circuit photovoltage of 0.57 V, and a fill factor of 0.70, corresponding to an overall conversion efficiency of 3.1%.
Otsuki, J., Takaguchi, Y., Takahashi, D., Kalimuthu, P., Singh, S. P., Islam, A., & Han, L. (2011). Piperidine-Substituted Perylene Sensitizer for Dye-Sensitized Solar Cells. Advances in OptoElectronics, 2011, 1–7. https://doi.org/10.1155/2011/860486