A facile method for fabricating Au-nanoparticles-decorated ZnO nanorods with greatly enhanced near-band-edge emission
Source abstract
Abstract
Abstract Doping with noble metal nanoparticles (NPs) has been proved to be an effective method to tune the photoluminescence (PL) properties of semiconductor materials. Since high processing temperatures make it difficult to avoid metal oxidation, low-temperature synthesis of metal NPs is preferred. Taking ZnO nanorods on fused silica substrates as a model system, a facile low-temperature fabrication method was adopted to deposit Au metal NPs coated ZnO nanorods in this work. The synthesis consisted of two steps: First, ZnO nanorods were grown on the fused silica substrates by a seed-assisted chemical solution method. Then, Au NPs were deposited on the surfaces of ZnO nanorods by an in situ photochemical metal-deposition. A homogeneous distribution of Au NPs with an average diameter around 30 nm has been obtained on the well-aligned ZnO nanorods. The near-band-edge (NBE) UV emission of the ZnO nanorods is enhanced by up to seven times, accompanied with a decrease in the deep-level (DL) emission intensity. The mechanism of the PL enhancement is discussed with respect to the surface plasmon resonance (SPR) effect and the band bending at Au/ZnO interface.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: ZnO doping and properties · Copper-based nanomaterials and applications · Ga2O3 and related materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (40)
Show source-provided references
1. Optically pumped lasing of ZnO at room temperature10.1063/1.118824 ↗
2. High responsively ultraviolet photodetector realized via a carrier-trapping process10.1063/1.3527974 ↗
3. Blue luminescence of ZnO nanoparticles based on non-equilibrium processes: defect origins and emission controls10.1002/adfm.200901884 ↗
4. Optical properties of ZnO and ZnO: In nanorods assembled by sol-gel method10.1063/1.2009731 ↗
5. Room-temperature ultraviolet nanowire nanolasers10.1126/science.1060367 ↗
6. ZnO nanowire UV photodetectors with high internal gain10.1021/nl070111x ↗
7. Mechanisms behind green photoluminescence in ZnO phosphor powers10.1063/1.362349 ↗
8. The luminescence of nanocrystalline ZnO particles: the mechanism of the ultraviolet and visible emission10.1016/S0022-2313(99)00482-2 ↗
9. Enhanced surface-excitonic emission in ZnO/Al2O3 core-shell nanowires10.1088/0957-4484/19/30/305202 ↗
10. Photoluminescence characteristics of high quality ZnO nanowires and its enhancement by polymer covering
11. Enhanced ultraviolet emission from hybrid structures of single-walled carbon nanotubes/ZnO films10.1063/1.3148646 ↗
12. Plasmon-enhanced ultraviolet photoluminescence from hybrid structures of Graphene/ZnO films10.1103/PhysRevLett.105.127403 ↗
13. Localized surface plasmon-enhanced electroluminescence from ZnO-based heterojunction light-emitting diodes10.1063/1.3658392 ↗
14. Synthesis, optical and electrochemical properties of ZnO nanorod hybrids loaded with high-density gold nanoparticles10.1039/c2ce25188d ↗
15. Enhancement of band gap emission stimulated by defect loss10.1364/OE.14.002372 ↗
16. Nobel metal nanodisks epitaxially formed on ZnO nanorods and their effect on photoluminescence10.1063/1.4739516 ↗
17. Effect of the surface-plasmon-exciton coupling and charge transfer process on the photoluminescence of metal-semiconductor nanostructures10.1039/c3nr00920c ↗
18. On the origin of enhanced photoconduction and photoluminescence from Au and Ti nanoparticles decorated aligned ZnO nanowire heterostructures10.1063/1.3671023 ↗
19. Ti nanoparticles decorated ZnO nanowires heterostructure: photocurrent and photoluminescence properties10.1080/17458080.2012.682284 ↗
20. Behind the change of the photoluminescence property of metal-coated ZnO nanowire arrays10.1063/1.3543902 ↗
21. Nanostructured Cu/ZnO coupled composites: toward tunable Cu nanoparticle sizes and plasmon absorption10.1021/jp4021855 ↗
22. Gold nanoparticles modified ZnO nanorods with improved photocatalytic activity10.1016/j.jcis.2011.07.005 ↗
23. Highly ultraviolet-transparent ZnO:Al conducting layers by pulsed laser deposition10.1149/1.3567025 ↗
24. ZnO-Au nanohybrids by rapid microwave-assisted synthesis for CO oxidation10.1039/c2dt30882g ↗
25. Surface plasmon enhanced band edge luminescence of ZnO nanorods by capping Au nanoparticles10.1063/1.3323091 ↗
26. Preparation of monodisperse Au/TiO2 nanocatalysts via self-assembly10.1021/cm060362r ↗
27. Photocatalytic synthesis and photovoltaic application of Ag-TiO2 nanorod composites10.1021/nl403430x ↗
28. Spatial separation of photogenerated electrons and holes among {010} and {110} crystal facets of BiVO410.1038/ncomms2401 ↗
29. A facile synthesis of multifunctional ZnO/Ag sea urchin-like hybrids as highly sensitive substrates for surface-enhanced Raman detection10.1039/c3ra41203b ↗
30. Photoreduction altered work function of Au-TiO2 nanoparticles measured by scanning kelvin probe microscopy10.1166/jnn.2013.7932 ↗
31. Site-specific photodeposition of silver on ZnO Nanorods10.1002/anie.200453880 ↗
32. Facile in situ synthesis of visible-light plasmonic photocatalysts M@TiO2(M=Au, Pt, Ag) and evaluation of their photocatalytic oxidation of benzene to phenol10.1039/c1jm10983a ↗
33. Resistive switching behavior of Pt/Mg0.2Zn 0.8O/Pt devices for nonvolatile memory applications
34. Site-specific growth of Au particles on ZnO nanopyramids under ultraviolet illumination10.1039/c1nr10685f ↗
35. Quantum plasmon resonances of individual metallic nanoparticles10.1038/nature10904 ↗
36. Surface plasmon spectroscopy of nanosized metal particles10.1021/la9502711 ↗
37. Enhanced ultraviolet emission from poly(vinyl alcohol) ZnO nanoparticles using a SiO2−Au core/shell structure10.1021/nl3031955 ↗
38. The surface-plasmon-resonance and band bending effects on the photoluminescence enhancement of Ag-decorated ZnO nanorods10.1063/1.4892874 ↗
39. Surface modification of grains with silver nano-clusters: a new route to great enhancement of photoluminescence in Eu3+-doped ferroelectric polycrystalline oxide thin films10.1364/OE.21.029425 ↗
40. Plasmonic enhancement or energy transfer? on the luminescence of gold-, silver-, and lanthanide-doped silicate glasses and its potential for light-emitting devices10.1002/adfm.200801892 ↗