Abstract
We presented a novel chemical technique to prepare TiO2 screen-printing from commercially available P25 powder to fabricate high performance and transparent porous TiO2 electrodes for dye-sensitized solar cells (DSCs). In this new method, acetic acid was modified on TiO2 surface as dispersant to overcome the aggregation problem and achieve efficient dispersion of P25 powder in water; The modified TiO2 powder was configured into viscous paste by flocculating reaction with hydrochloric acid. The porous transparent films over 12 mu m thickness without cracking and peeling-off were fabricated on FTO substrates. A remarkably conversion efficiency of 8.1% was achieved.