High-quality GaN films grown on chemical vapor-deposited graphene films

• DOI: 10.1038/am.2012.45
• Publication Date: 2012-09-07T06:02:34Z
• Authors: Kunook Chung; Suk In Park; Hyeonjun Baek; Jin-Seok Chung; Gyu-Chul Yi
• Keywords: 0103 physical sciences; 01 natural sciences

We demonstrate the growth of high-quality GaN films with flat surface and uniform morphology on large-scale polycrystalline chemical vapor-deposited graphene films. The films exhibit stimulated emission even at room temperature, a highly c-axis-oriented crystal structure, and a preferred in-plane orientation. Furthermore, the GaN films grown on the graphene films can be used for fabrication of blue and green light-emitting diodes.