| Title |
Synthesis of Nanoporous TiO_2 Materials Using Sol-gel Combustion Method and Its Photovoltaic Characteristics |
| Authors |
허종현(Heo, Jong-Hyun) ; 성열문(Sung, Youl-Moon) |
| Keywords |
Dye Sensitized Solar Cells ; TiO_2 ; Sol-gel Combustion method ; Ketjen black ; Photovoltaic efficiency |
| Abstract |
In this work, nanoporous TiO_2 powder was fabricated using Ketjen black, and applied in photovoltaic device based on the Dye-sensitized Solar Cells (DSCs). TiO_2 powder was fabricated using Ti-isopropoxide and 2-propanol by sol-gel combustion method. For added 0~2g variable of Ketjen black, characteristic of porosity, size of particle and crystallite of obtained TiO_2 nano powder was investigated. The photovoltaic efficiency of the prepared DSCs was measured using TiO_2 film which prepared on each different heat treatment temperature(100°C~600°C) with paste of TiO_2 powder. The porosity and size in particle of TiO_2 powder made with Ketjen black Ig was influenced significantly effect to DSCs characteristic. Heat treatment at 500°C makes the better photovoltaic efficiency which around 6.11%(J_{sc}=13.35mA/cm^2, V_{oc}=0.73V, ff=0.63). The sol-gel combustion method was useful to DSCs fabrication. |