Figure 3From: Considerable Enhancement of Field Emission of SnO2Nanowires by Post-Annealing Process in Oxygen at High Temperaturea TEM images of SnO2nanowires,b HRTEM images of SnO2nanowires,c the EDS spectrum of SnO2nanowires,d the ratio of O to Sn in SnO2nanowires annealed at different temperaturesBack to article page