LiMn_2O_4 thin films were prepared by solution deposition through spin-coating technique. A lot of factors that might affect the morphology of thin film were investigated.
During the process of preparing the films, the viscosity of the precursor sol was fixed at 13MPa·s, the rotating speed of the spin coating was 4500 r·min-1and the rotating time was 20s. The wet films were dried at 200℃, then were calcined at 400℃for 30min and finally were annealed at 600℃for 3h.
A single layer structure of ITO/PNB/Al was prepared via spin-coating of PNB solution as a thin film on the top of an ITO substrate, while aluminum top electrode was vacuum evaporated.