Annealing temperatures 1 Coatings 1 Direct band gap 1 Electronic equipment 1 Enamels 1 Energy gap 1 Field emission microscopes 1 Field emission scanning electron microscopy 1 Film preparation 1 Film thickness 1 Optical emission spectroscopy 1 Optical properties 1 Precursor solutions 1 Quartz substrate 1 Scanning electron microscopy 1 Sol gel dip coating Sol-gel dip coating technique 1 Sol-gel process 1 Sol-gels 1 Surface morphology 1 Surface profilers 1 Surface properties 1 Thermoelectric equipment 1 Thickness measurement 1 Thin films 1 Ultraviolet visible spectroscopy 1