Figure 4From: Room-temperature violet luminescence and ultraviolet photodetection of Sb-doped ZnO/Al-doped ZnO homojunction arrayPL measurements of Sb-doped ZnO microrod array (red) and intrinsic ZnO microrod array (black). The inset shows a photo taken on the Sb-doped ZnO microrod array and a zoom-in showing violet luminescence.Back to article page