Room temperature deposition of TiO2 using nano particle deposition system (NPDS): Application to dye-sensitized solar cell (DSSC)

• Published in: International journal of precision engineering and manufacturing Vol. 12; no. 4; pp. 749 - 752
• Main Authors: Kim, Min-Saeng, Chun, Doo-Man, Choi, Jung-Oh, Lee, Jong-Cheon, Kim, Kwang-Su, Kim, Yang Hee, Lee, Caroline Sunyong, Ahn, Sung-Hoon
• Format: Journal Article
• Language: English
• Published: Seoul The Korean Society for Applied Biological Chemistry 01.08.2011
• Subjects: Engineering; Industrial and Production Engineering; Materials Science; Dry-spray method; Titanium oxide; Dye-sensitized solar cell (DSSC); Room temperature deposition; Nano particle deposition system (NPDS)
• ISSN: 2234-7593; 2005-4602
• DOI: 10.1007/s12541-011-0099-3

To apply for the working electrode of dye-sensitized solar cell (DSSC), semiconducting TiO 2 powder is deposited on indium tin oxide (ITO)-coated glass. In conventional DSSC fabrication, the high-temperature sintering process should be contained to make the necking of powders, and to assemble powders and substrate. In this research, dry TiO 2 powder is deposited using a nano particle deposition system (NPDS) to make photoelectrode layer through spraying at room temperature conditions. The powder is sprayed through a slit-type nozzle having a 0.4×10mm 2 rectangular outlet under atmospheric chamber pressure. Through XRD analysis and FE-SEM observation, the deposition of the semiconductor oxide powder is confirmed and the thickness (7.6μm) is measured. The fabricated DSSC has a short circuit current density J SC = 3.077mA/cm 2 , open circuit voltage V OC = 0.709V, and energy efficiency η = 1.24%.