Semiconductor materials 11 Scanning electron microscopy 7 Field emission microscopes 6 Field emission scanning electron microscopy 6 Substrates 6 Energy gap 5 Annealing temperatures 3 Combustion method 3 Nanorods 3 Optical properties 3 Semiconductor doping 3 Silicon 3 Silicon substrates 3 Thin films 3 Aluminum 2 Band gap energy 2 Crystallite size 2 Electronic materials 2 Field emission cathodes 2 Field emission scanning electron microscopes 2 Graphene 2 Hydrothermal process 2 II-VI semiconductors 2 Lithium compounds 2 Manganese compounds 2 Manufacture 2 Metals 2 Morphology 2 Nanostructured materials 2 Nickel compounds 2