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Int. J. Electroactive Mater. 3 (2015) 1-5

Nanoporous TiO2 and ZnO Photoelectrodes: A Comparative Photovoltaic Performance Study

Pramod Singh1*, Nitin Jadhav2

1Physics, Sharda university, Greater Noida, Uttar Pradesh, India
2Physics, Sharda University, Greater Noida, Uttar Pradesh, India

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Abstract : In present study highly ordered nanoporous TiO2 materials with crystalline frameworks were successfully synthesized from different concentration of triblock co-polymer (soft templates) like F-127 F-68. Synthesized mesoporous TiO2 have variation of pore size ranging from 2-5 nm and having high specific surface area from 216 m2/g - 352 m2/g. By using same synthesis method Mesoporous ZnO materials also synthesized and we have obtained record highest specific surface area up to 578 m2/g and average pore size ranging from 7.22 nm to 13.43 nm A photoelectrode fabricated using synthesized mesoporous TiO2 and ZnO shows increase in photocurrent (Jsc) with increase in pore size as well as change in Voc with surface area and particle size with variation in structure texture and morphology of photoelectrode. The DSSC was fabricated using N3 dye as sensitizer and solid polymer electrolyte with KI/I2 as redox electrolyte. Synthesized samples were characterized by XRD, TEM, and Brunauer-Emmett-Teller (BET). Photovoltaic parameters suggests that dye sensitized solar cell (DSSC) performance is strongly dependent on combined effect of Voc and Jsc which shows the characteristic change with structure texture morphology as well as pore size and specific surface area of fabricated electrode.

Keywords : DSSC,ZnO,TiO2