| 초록 |
This research aims to fabricate TiO2 nanotubes (TNTs) from commercial TiO2 nanoparticles (P25) by hydrothermal method, apply TNTs as the electron transport layer in CH3NH3PbI3 perovskite solar cell (PSC), and to investigate the effect of TNTs layer thickness on the efficiency of this PSC. TNTs were fabricated by hydrothermal method using P25 and NaOH with a 1:40 mole ratio for 24h. The NaOH concentration was fixed at 10M and the hydrothermal temperature varied at 100oC, 150oC, and 180oC. Fabricated TNTs are spin-coated on the substrate with different rotational speeds (1000 - 3000 rpm) for 40s. Carbon paste is laminated on top of PSC and serves as a hole collector. The morphology, structure, composition and photoelectric properties of TNTs as well as PSC were characterized by transmission electron microscopy, scanning electron microscopy, X-ray diffraction, BET surface area and pore analysis, ultraviolet-visible spectrophotometry and solar cell I-V test system. |
