Figure 2From: Catalyst-free direct vapor-phase growth of Zn1−xCu x O micro-cross structures and their optical propertiesSEM and TEM images of Zn 1− x Cu x O samples prepared for different reaction times. (a, b, c) FE-SEM images of Zn1−xCu x O nanostructures prepared at 750°C for 60, 30, and 5 min, respectively. (d) EDX of the sample prepared at 750°C for 5 min. (e) TEM image, (f) HRTEM image, and (g) SAED of Zn1−xCu x O micro-cross structures.Back to article page