Growth of Blue Luminescent Cu Doped ZnO Nanowires by Modified Sol-Gel

  • U. P. S. Gahlaut
  • Vijay Kumar
  • R. K. Pandey
  • Y. C. Goswami
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 166)


Copper doped ultra small highly luminescent ZnO nanowires were obtained by modified sol gel route. The zinc acetate mixed with ethanol was used as precursor for the synthesis. Copper doping was done by adding various concentrations of copper chloride. Gel was obtained by magnetically stirring the mixture at 60 °C for 2–3 h and then keeping it for another 24 h for aging. The particles obtained were characterized by XRD, AFM, Optical transmission and photoluminescence studies. X ray diffractogram peak is identified for ZnO. AFM micrograph shows particle alignment in linear direction and formation of nanowires on increasing Cu concentration. The optical band gap of copper doped ZnO shift from 3.2 to 4.76 eV. This strong shift confirms the ultra small size of particles. In PL studies, Undoped ZnO nanostructures exhibit a near-band-edge UV emission at 360 nm and a broad defect related blue emission at 440 nm. Addition of Copper improves the photoluminescence peak in UV region with an additional peak observed in middle UV region at 230 nm. Yellow green or blue makes the nanowires suitable for light emitting devices and biological sensing devices.


Copper Chloride Near Band Edge Strong Blue Shift Ultra Small Size Short Wavelength Device 
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The authors are thankful for providing XRD and AFM facility to UGC-DAE consortium for scientific research Indore India and P C Ray research centre, ITM University Gwalior (MP) for providing optical and photoluminescence facilities.


  1. 1.
    Tang ZK, Wang GKL, Yu P, Kawasaki M, Ohtomo A, Koinuma H, Segawa Y (1998) Room-temperature ultraviolet laser emission from self-assembled ZnO microcrystalline thin films. Appl Phys Lett 72:3270–3272CrossRefADSGoogle Scholar
  2. 2.
    Han WS, Kim YY, Kong BH, Cho HK (2009) Ultraviolet light emitting diode with n-ZnO:Ga/i-ZnO/p-GaN:Mg heterojunction. Thin Solid Films 517:5106–5109CrossRefADSGoogle Scholar
  3. 3.
    Zhang L, Zhao J, Lu H, Li L, Zheng J, Li H, Zhu Z (2012) Highly sensitive and selective dimethylamine sensors based on hierarchical ZnO architectures composed of nanorods and nanosheet-assembled microspheres. Sens Actuators B Chem 171–172:1101–1109CrossRefGoogle Scholar
  4. 4.
    Chow L, Lupan O, Chai G, Khallaf H, Ono LK, Cuenya BR, Tiginyanu IM, Ursaki VV, Sontea V, Schulte A (2013) Synthesis and characterization of Cu-doped ZnO one-dimensional structures for miniaturized sensor applications with faster response. Sens Actuators A 189:399–408CrossRefGoogle Scholar
  5. 5.
    Ferhat M, Zaori A, Ahuja R (2009) Magnetism and band gap narrowing in Cu-doped ZnO. Appl Phys Lett 94:142502CrossRefADSGoogle Scholar
  6. 6.
    Lu H, Wang Y, Lin X (2009) Structures, varistor properties, and electrical stability of ZnO thin films. Mater Lett 63:2321–2323CrossRefGoogle Scholar
  7. 7.
    Dedova T, Acik IO, Krunks M, Mikli V, Volobujeva O, Mere A (2012) Effect of substrate morphology on the nucleation and growth of ZnO nanorods prepared by spray pyrolysis. Thin Solid Films 520:4650–4653CrossRefGoogle Scholar
  8. 8.
    Thakur V, Verma UP, Rajaram P (2013) Solvent dependent growth of fibrous and non-fibrous nanocrystalline thin films of ZnO. J Sol-Gel Sci Technol 66(2):280–287CrossRefGoogle Scholar
  9. 9.
    Kiyotaka M, Kazuyuki H, Shimotuma Y (2011) Nanotechnology and Nanomaterials. In: Abass H (ed) Nanowires—fundamental research, InTech, RijekaGoogle Scholar
  10. 10.
    Ozgur U, Morkoç H (2006) Optical properties of ZnO and related alloys. In: Jagadish C, Pearton S (eds) Zinc oxide bulk, thin films and nanostructures, Elsevier, Amsterdam, pp 175–239Google Scholar
  11. 11.
    Burstein E (1954) Anomalous optical absorption limit in InSb. Phys Rev 93:632–633CrossRefADSGoogle Scholar
  12. 12.
    Ilican S, Caglar Y, Claglar M (2008) Preparation and characterization of ZnO thin films deposited by sol-gel spin coating method. J Opto Electron Adv Mater 10:2578–2583Google Scholar

Copyright information

© Springer India 2015

Authors and Affiliations

  • U. P. S. Gahlaut
    • 1
  • Vijay Kumar
    • 1
  • R. K. Pandey
    • 2
  • Y. C. Goswami
    • 1
  1. 1.School of Physical SciencesITM UniversityGwaliorIndia
  2. 2.NIIT University AlwarRajasthanIndia

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