| 초록 |
Using TiO2 in inverse opals (IOs) gives advantages that include low cost, non-toxicity, high refractive index (>2) and wide electronic band gap useful in electron transporting materials for state-of-the-art thin film solar cells. While conclusions have been drawn on liquid phase precursor method which usually involves pipette dropping of precursor and separate hydrolysis to form IO matrix as unsuccessful IO fabrication method due to formation of defects, this research adopts use of pre-hydrolyzed precursor in a very simple yet careful approach for successful infiltration before calcination. Thus, defects such as overlayer, multiple domains, and significant cracks were solved. Polystyrene nanoparticles were synthesized through emulsion polymerization and assembled into opal template via self-assembly. Using template process, the IO structure is reproduced by controlling TiO2 synthesis reaction. |
