An effective use of nanocrystalline CdO thin films in dye-sensitized solar cells |
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Authors: | RS Mane HM Pathan CD Lokhande Sung-Hwan Han |
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Affiliation: | aInorganic Nano-Materials, Department of Chemistry, Hanyang University, Sungdong-Ku, Haengdang dong 17, Seoul 133-791, Republic of Korea;bThin Film Physics Laboratory, Department of Physics, Shivaji University, Kolhapur 416 004, India |
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Abstract: | Thin films of cadmium oxide (CdO) were synthesized by layer-by-layer deposition method on indium doped tin oxide (ITO) substrates. Post-deposition annealing at 250 °C for 24 h produced pure phase CdO films by removal of trace amount of cadmium hydroxide, as confirmed from X-ray diffractogram. First time employment of CdO in place of TiO2 in dye-sensitized solar cells is reported to check feasibility and cell performance. A dye-sensitized nanocrystalline CdO photo-electrode was obtained by adsorbing cis-dithiocyanato (4,4′-dicarboxylic acid-2,2′-bipyridide) ruthenium (II) (N3) dye by keeping at 45 °C for 20 h. The efficiency of dye-sensitized nanocrystalline CdO thin film solar cell was increased from 0.24% to 2.95% due to dye adsorption. This must be highest reported conversion efficiency for other metal oxides than TiO2based dye-sensitized solar cells. |
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Keywords: | Thin films Cadmium oxide Morphology Structural properties Dye-sensitized solar cell |
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