Improving light output of blue light-emitting diodes by photonic crystal of epitaxially-grown zinc oxide

To improve light output in blue light-emitting diode, photonic crystal (PhC) is fabricated by a wet epitaxial growth of zinc oxide (ZnO) rods. The fabricated PhC enhances light output by 1.4 times as designed, indicating that the wet-grown ZnO exhibits the excellent optical and structural quality for PhC.