Electroluminescence from ZnO nanowire-based heterojunction LED

We have demonstrated that fabrication of the ZnO nanowire/GaN hetero-junction light emitting diode (LED) by contacting the tip of the ZnO nanowires with the GaN film, and UV electroluminescence from the p-n junction. In this study, we fabricated the heterojunction by directly-growth of the ZnO nanowires on the GaN film using nanoparticleassisted pulsed laser deposition. Photoluminescence spectrum of the ZnO nanowires showed a weak near-band-edge ultraviolet (UV) emission and a visible broad emission, which was related to transition by ZnO defect state. We applied a selective laser irradiation to the p-n junction of the ZnO-based LED. The UV emission was strongly enhanced from the laser-irradiated p-n junction.

[1]  Tatsuo Okada,et al.  Electroluminescence from ZnO nanowire-based p-GaN/n-ZnO heterojunction light-emitting diodes , 2009 .

[2]  Junxi Wang,et al.  Synthesis and characterization of ZnO nanorods and nanoflowers grown on GaN-based LED epiwafer using a solution deposition method , 2007 .

[3]  William L. Warren,et al.  Correlation between photoluminescence and oxygen vacancies in ZnO phosphors , 1996 .

[4]  P. Mascher,et al.  Point defects and luminescence centres in zinc oxide and zinc oxide doped with manganese , 1992 .

[5]  Mitsuhiro Higashihata,et al.  Vertically Aligned Growth of ZnO Nanonails by Nanoparticle-Assisted Pulsed-Laser Ablation Deposition , 2007 .

[6]  H. Zeng,et al.  Temperature-dependent shifts of three emission bands for ZnO nanoneedle arrays , 2006 .

[7]  Tatsuo Okada,et al.  Aligned growth of ZnO nanowires and lasing in single ZnO nanowire optical cavities , 2008 .

[8]  S. Chang,et al.  Electroluminescence from n-ZnO nanowires/p-GaN heterostructure light-emitting diodes , 2009 .

[9]  Cesare Soci,et al.  Rational synthesis of p-type zinc oxide nanowire arrays using simple chemical vapor deposition. , 2007, Nano letters.

[10]  T. S. Lee,et al.  Properties of arsenic-doped p-type ZnO grown by hybrid beam deposition , 2003 .

[11]  O. Nur,et al.  The effect of the interlayer design on the electroluminescence and electrical properties of n-ZnO nanorod/p-type blended polymer hybrid light emitting diodes , 2009, Nanotechnology.

[12]  David P. Norton,et al.  ZnO nanowire growth and devices , 2004 .

[13]  H. Ohno,et al.  Repeated temperature modulation epitaxy for p-type doping and light-emitting diode based on ZnO , 2004 .

[14]  Moon-Ho Ham,et al.  ZnO-nanowire-inserted GaN/ZnO heterojunction light-emitting diodes. , 2007, Small.

[15]  G. He,et al.  Red luminescence in ZnO films prepared by a glycol-based Pechini method , 2008 .

[16]  Z. Fang,et al.  Blue luminescent center in ZnO films deposited on silicon substrates , 2004 .

[17]  Qifeng Zhang,et al.  Electrically driven ultraviolet lasing behavior from phosphorus-doped p-ZnO nanonail array/n-Si heterojunction , 2009 .

[18]  Y. Nakata,et al.  Growth mechanism of ZnO nanorods from nanoparticles formed in a laser ablation plume , 2004 .

[19]  Fujun Zhang,et al.  Organic/inorganic heterostructures for enhanced electroluminescence , 2007 .

[20]  R. Snyder,et al.  Phosphorus doped Zn(1-x)Mg(x)O nanowire arrays. , 2009, Nano letters.

[21]  Dong Chan Kim,et al.  Multidimensional ZnO light-emitting diode structures grown by metal organic chemical vapor deposition on p-Si , 2007 .

[22]  A. Waag,et al.  Zinc oxide nanorod based photonic devices: recent progress in growth, light emitting diodes and lasers , 2009, Nanotechnology.