Figure 1From: Ultraviolet/blue light-emitting diodes based on single horizontal ZnO microrod/GaN heterojunctionSEM image, polarized μ-Raman spectra, schematic, and I-V characteristics. (a) SEM image of an individual ZnO MR. The inset shows the enlarged SEM image. (b) Polarized μ-Raman spectra of the ZnO MR. (c) Schematic of a light emitting diode device. (d) The I-V characteristics of the heterojunction device.Back to article page