IV characteristics Sol-gels 4 Zinc oxide 4 Electric properties 3 Sol-gel spin coating 3 Chemical vapor deposition 2 Electronic equipment 2 Energy gap 2 Field emission microscopes 2 Field emission scanning electron microscopy 2 Grain size 2 Manufacture 2 Optimization 2 Thermoelectric equipment 2 Thin films 2 X ray diffraction 2 Zinc compounds 2 Zinc oxide (ZnO) 2 Absorption edges 1 Annealing 1 Anodic oxidation 1 Anodization voltages 1 Atomic force microscopy 1 Atomic percent 1 Bandgap materials 1 C (programming language) 1 Chemical vapor 1 Chemical vapour deposition 1 Close cycle cryostats 1 Computational model 1