Morphological transformations in cobalt doped zinc oxide nanostructures: Effect of doping concentration
Source abstract
Abstract
Abstract Effect of doping concentration on the morphological, vibrational and optical properties of ZnO nanostructures has been studied systematically. Incorporation of cobalt into the ZnO lattice is found to gradually transform the morphology from hexagonal cylinders to rods for nominal Co concentration of 1–10 at%, respectively. An increase in hydroxyl ion concentration in the Co precursor leads to a preferential growth along [001] direction, giving rise to the formation of rod-like structures for high Co concentrations. Based on the structural characterization, a model for morphological evolution of microstructures has been proposed. Debye–Scherrer analysis of XRD pattern reveals an increase of the crystallite size with doping concentration. The band gap, calculated using a Kubelka–Munk method, reveals a decrease in the absorption onset with an increase in the doping level. Raman analysis reveals the basic as well as impurity phases and FT-IR analysis confirms the incorporation of cobalt-doping. Photoluminescence analysis provided further insight of the optical processes altered with the Co doping.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: ZnO doping and properties · Gas Sensing Nanomaterials and Sensors · Ga2O3 and related materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (71)
Show source-provided references
1. Synthesis and characterisation of zinc oxide nanoparticles: application to textiles as UV-absorbers10.1007/s11051-007-9318-3 ↗
2. Field effect transistor with electrodeposited ZnO nanowire channel10.1016/j.electacta.2014.05.124 ↗
3. Two-step oxygen injection process for growing ZnO nanorods10.1557/JMR.2003.0396 ↗
4. Gate-refreshable nanowire chemical sensors10.1063/1.1883715 ↗
5. Structural and electrical properties of ZnO varistors containing different spinel phases10.1016/S0272-8842(00)00051-1 ↗
6. Synthesis of ZnO nanowire arrays and their photoluminescence property10.1016/j.jallcom.2009.01.005 ↗
7. Synthesis and characterization of Indium-doped ZnO nanowires with periodical Single-twin structures10.1021/jp057476v ↗
8. ZnO nanowires fabricated by a convenient route10.1039/b108172a ↗
9. Nanobelts of semiconducting oxides10.1126/science.1058120 ↗
10. Low-temperature growth of well-aligned ZnO nanorods by chemical vapor deposition10.1002/1521-4095(20020205)14:3<215::AID-ADMA215>3.0.CO;2-J ↗
11. Controlled growth of ZnO nanowires and their optical properties10.1002/1616-3028(20020517)12:5<323::AID-ADFM323>3.0.CO;2-G ↗
12. Material design for transparent ferromagnets with ZnO-based magnetic semiconductors10.1143/JJAP.39.L555 ↗
13. Structural transformation in nickel doped zinc oxide nanostructures10.1016/j.materresbull.2012.10.045 ↗
14. Role of vanadium ions, oxygen vacancies, and interstitial zinc in room temperatura ferromagnetism on ZnO–V2O5 nanoparticles10.1186/1556-276X-9-169 ↗
15. Self-Assembled 3D photonic crystals from ZnO colloidal spheres10.1016/S0254-0584(02)00492-3 ↗
16. The structure and photoluminescence properties of ZnO nanobelts prepared by a thermal evaporation process10.1016/j.jlumin.2008.10.018 ↗
17. Synthesis and characterization of nano-sized ZnO powders by direct precipitation method10.1016/j.cej.2008.07.047 ↗
18. Synthesis of undoped and M-doped ZnO (M = Co, Mn) nanopowder in water using microwave irradiation
19. A room-temperature and microwave synthesis of M-doped ZnO (M=Co,Cr, Fe, Mn and Ni)10.1007/s10876-005-0024-y ↗
20. A simple recycling and reuse hydrothermal route to ZnO nanorod arrays, nanoribbon bundles, nanosheets, nanocubes and nanoparticles10.1039/b900391f ↗
21. Polymer-mediated shape-selective synthesis of ZnO nanostructures using a single-step aqueous approach10.1039/b904833m ↗
22. Growth mechanism and optical properties of ZnO nanotube by the hydrothermal method on Si substrates10.1016/j.jallcom.2008.07.123 ↗
23. The growth mechanism and optical properties of ultralong ZnO nanorod arrays with a high aspect ratio by a preheating hydrothermal method10.1088/0957-4484/20/15/155603 ↗
24. Studies on the structural and optical properties of zinc oxide nanobushes and Co-doped ZnO self-aggregated nanorods synthesized by simple thermal decomposition route10.1016/j.materresbull.2010.06.011 ↗
25. Structural, optical and magnetic properties of Co-doped ZnO nanorods prepared by hydrothermal method10.1016/j.jallcom.2013.04.011 ↗
26. Doping concentration driven morphological evolution of Fe doped ZnO nanostructures10.1063/1.4900721 ↗
27. Effect of cobalt doping on structural, optical, and magnetic properties of ZnO nanoparticles synthesized by co-precipitation method10.1021/jp411848t ↗
28. Hydrothermal synthesis of Co-doped ZnO flakes with room temperature ferromagnetism10.1016/j.jallcom.2010.04.086 ↗
29. Structural and optical properties of unannealed and annealed ZnO nanoparticles prepared by a chemical precipitation technique10.1016/j.physe.2010.01.023 ↗
30. Structural and vibrational properties of ZnO nanoparticles synthesized by the chemical precipitation method10.1016/j.physe.2013.12.009 ↗
31. Zeolites and Catalysis: Synthesis, reactions and applications, in: Pablo Cubillas Michael W. Anderson (Eds.), Synthesis Mechanism: Crystal Growth and Nucleation Vol. 1, WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2010, 4 5.ISBN: 978-3-527-32514-6. (Chapter 1)
32. Hydrothermal synthesis of ZnO nanobundles controlled by PEO–PPO–PEO block copolymers10.1016/j.jcis.2006.10.035 ↗
33. Aqueous solution fabrication of large-scale arrayed obelisk-like zinc oxide nanorods with high efficiency10.1016/j.jssc.2003.10.026 ↗
34. Growth and comparison of different morphologic ZnO nanorod arrays by a simple aqueous solution route10.1016/j.matlet.2007.02.003 ↗
35. Growth of germanium nanowires on silicon (111) substrates by molecular beam epitaxy10.1166/jnn.2011.4288 ↗
36. In Situ etching for total control over axial and radial nanowire growth10.1007/s12274-010-1029-x ↗
37. SnO2 doped with Mn, Fe or Co: room temperature dilute magnetic semiconductors10.1063/1.1676026 ↗
38. Hydrothermal synthesis of zinc oxide powders with controllable morphology10.1016/S0272-8842(03)00069-5 ↗
39. Hydrothermal growth of ZnO nanostructures10.1088/1468-6996/10/1/013001 ↗
40. Room temperature ferromagnetism with high magnetic moment and optical properties of Co doped ZnO nanorods synthesized by a solvothermal route10.1016/j.jallcom.2014.06.087 ↗
41. Structural, optical and magnetic properties of Co-doped ZnO nanorods prepared by hydrothermal method10.1016/j.jallcom.2013.04.011 ↗
42. Structural, optical, and magnetic properties of Co-doped ZnO nanorods fabricated by a facile solution route10.1016/j.jallcom.2011.11.112 ↗
43. Local structural evolution of co-doped ZnO nanoparticles upon calcination studied by in-situ quick-scan XAFS10.1021/jp075864m ↗
44. Co-doped ZnO nanoparticles: structural, morphological, optical, magnetic and antibacterial studies10.1016/j.jmst.2014.07.013 ↗
45. Effect of doping concentration on absorbance, structural, and magnetic properties of cobalt-doped ZnO nano-crystallites10.1186/2228-5326-2-31 ↗
46. Exploring the dielectric behavior of Co doped ZnO nanoparticles synthesized by wet chemical route using impedance spectroscopy10.1016/j.jallcom.2013.06.035 ↗
47. Influence of Co-doping on the structural, optical and magnetic properties of ZnO nanoparticles synthesized using auto-combustion method
48. Physical structure and optical properties of Co-doped ZnO nanoparticles prepared by co-precipitation10.1007/s11051-013-2030-6 ↗
49. Size control of Co-doped ZnO rods by changing the solvent10.12989/amr.2012.1.1.075 ↗
50. Probing the dominance of interstitial oxygen defects in ZnO nanoparticles through structural and optical characterizations10.1016/j.ceramint.2014.06.041 ↗
51. Cu-doped ZnO nanoparticles: synthesis, structural and electrical properties10.1016/j.physb.2012.01.103 ↗
52. Effect of doping concentration on absorbance, structural, and magnetic properties of cobalt-doped ZnO nano-crystallites10.1186/2228-5326-2-31 ↗
53. Structural and optical properties of Co-doped ZnO nanocrystallites prepared by a one-step solution route10.1016/j.jlumin.2011.08.019 ↗
54. Cobalt doping effects on photoluminescence, Raman scattering, crystal structure, and magnetic and piezoelectric properties in ZnO single crystals grown from molten hydrous LiOH and NaOH solutions10.1016/j.jallcom.2014.12.148 ↗
55. Optical properties of ZnO quantum dots in epoxy with controlled dispersion10.1021/jp805104h ↗
56. Optical properties of SnO2 nanoparticles and nanorods synthesized by solvothermal process10.1063/1.2200449 ↗
57. Dual active luminescence centers from a single-solid composite SnO2:Eu3+/Al-MCM-41: defect chemistry mediated color tuning for white light emission10.1039/c3ra41323c ↗
58. Large band gap bowing of InxGa1−xN alloys10.1063/1.121072 ↗
59. Magnetic behavior of nanocrystalline powders of Co-doped ZnO diluted magnetic semiconductors synthesized by polymerizable precursor method10.1016/j.jmmm.2005.07.020 ↗
60. Physical structure and optical properties of Co-doped ZnO nanoparticles prepared by co-precipitation10.1007/s11051-013-2030-6 ↗
61. Energy gap, excitonic, and ‘‘internal’’ Mn2+ optical transition in Mn-based II–VI diluted magnetic semiconductors10.1103/PhysRevB.38.10600 ↗
62. Structural, optical and thermal studies of cobalt doped hexagonal ZnO by simple chemical precipitation method
63. Preparation and characterization of Co-doped ZnO nanomaterials10.1016/j.matchemphys.2008.09.017 ↗
64. Optical spectroscopy of Eu3+ doped ZnO nanocrystals10.1021/jp077001z ↗
65. Hydrothermal synthesis of nano ZnO structures from CTAB
66. Effect pH variation on structural and optical properties of Zn0.95Co0.05O nanoparticles10.1016/j.jlumin.2014.12.024 ↗
67. Magnetic and Raman scattering studies of Co-doped ZnO thin films grown by pulsed laser deposition10.1007/s00339-013-7875-0 ↗
68. Effect of Co doping on the structural, optical and magnetic properties of ZnO nanoparticles
69. Raman spectroscopic studies of oxygen defects in Co-doped ZnO films exhibiting room-temperature ferromagnetism
70. Optical properties of ZnO and ZnO:In nanorods assembled by sol–gel method10.1063/1.2009731 ↗
71. Correlation between size-induced lattice variations and yellow emission shift in ZnO nanostructures10.1063/1.2051800 ↗