| 초록 |
Mesoporous TiO2 nanoparticle (NP) films are broadly used as electrodes in photoelectrochemical cells, dye-sensitized solar cells (DSSCs), and perovskite solar cells (PSCs). State-of-the-art mesoporous TiO2 NP films for these solar cells are fabricated by annealing TiO2 paste-coated fluorine-doped tin oxide glass in a box furnace at 500 °C. Here, the use of a nontraditional reactor, i.e., flame, is reported for the high throughput and ultrafast thermal treatment of TiO2. Flame has a broad tunable temperature range; therefore, flame has an intrinsic temperature field with a large gradient. Hence, flame treatment, when coupled with FTO glass cooling, could provide the desired temperature field for processing TiO2 films on FTO. Thus, the flame annealing of TiO2 paste can be a promising approach for fabricating PSCs with enhanced charge transport performance. In addition, a sol-flame doping process to introduce Co dopant into TiO2 will be introduced. Ultra-fast flame-processed Co-doping of TiO2 solves the J–V hysteresis problem and increases the power conversion efficiency of both mesoscopic and planar PSCs. |
