Abstract
A facile and reproducible low-temperature (80 °C) solution route has been introduced to synthesize ZnO ellipsoids on silicon substrate without any pretreatment of the substrate or organic/inorganic additives. Scanning electron microscopy, transmission electron microscopy, and x-ray diffraction spectroscopy are performed to analyze the structural evolution, the single crystalline nature, and growth orientation at different stages of the synthetic process. The sequential formation mechanisms of heterogeneous nucleation in primary and secondary crystal growth behaviors have been discussed in detail. The presented results reveal that the morphology of micro/nanostructures with desired features can be optimized. The optical properties of grown structures at different stages were investigated using cathodoluminescence (CL). The monochromatic CL images were recorded to examine the UV and visible band emission contributions from the different positions of the intermediate and final structures of the individual ZnO ellipsoid. Significant enhancement in the defect level emission intensity at the central position of the structure reveals that the quality of the material improves as the reaction time is extended.
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J. Kido, M. Kimura, and K. Nagai: Multilayer white light-emitting organic electroluminescent device. Science 267, 1332 (1995).
M.A. Noginov, G. Zhu, A.M. Belgrave, R. Bakker, V.M. Shalaev, E.E. Narimanov, S. Stout, E. Herz, T. Suteewong, and U. Wiesner: Demonstration of a spaser-based nanolaser. Nature 460, 1110 (2009).
M. Israr-Qadir, S. Jamil-Rana, O. Nur, M. Willander, L.A. Larsson, and P.O. Holtz: Fabrication of ZnO nanodisks from structural transformation of ZnO nanorods through natural oxidation and their emission characteristics. Ceram. Int. 40, 2435 (2014).
J. Zeng, Q. Zhang, J. Chen, and Y. Xia: A comparison study of the catalytic properties of Au-based nanocages, nanoboxes, and nanoparticles. Nano Lett. 10, 30 (2010).
F. D’Souza and O. Ito: Supramolecular donor-acceptor hybrids of porphyrins/phthalocyanines with fullerenes/carbon nanotubes: Electron transfer, sensing, switching, and catalytic applications. Chem. Commun. 33, 4913 (2009).
P-C. Chen, S. Sukcharoenchoke, K. Ryu, L. Gomez de Arco, A. Badmaev, C. Wang, and C. Zhou: 2,4,6-trinitrotoluene (TNT) chemical sensing based on aligned single-walled carbon nanotubes and ZnO nanowires. Adv. Mater. 22, 1900 (2010).
J.L. Johnson, A. Behnam, S.J. Pearton, and A. Ural: Hydrogen sensing using Pd-functionalized multi-layer graphene nanoribbon networks. Adv. Mater. 22, 4877 (2010).
P.H. Seeberger and D.B. Werz: Synthesis and medical applications of oligosaccharides. Nature 446, 1046 (2007).
Y.Y. Li, F. Cunin, J.R. Link, T. Gao, R.E. Betts, S.H. Reiver, V. Chin, S.N. Bhatia, and M.J. Sailor: Polymer replicas of photonic porous silicon for sensing and drug delivery applications. Science 299, 2045 (2003).
L. Schmidt-Mende and J.L. MacManus-Driscoll: ZnO — nanostructures, defects, and device. Mater. Today 10, 40 (2007).
Y. Qin, X. Wang, and Z.L. Wang: Microfibre-nanowire hybrid structure for energy scavenging. Nature 451, 809 (2008).
Y. Qin, R. Yang, and Z.L. Wang: Growth of horizontal ZnO nanowire arrays on any substrate. J. Phys. Chem. C 112, 18734 (2008).
S.H. Lee, T. Minegishi, J.S. Park, S.H. Park, J-S. Ha, H-J. Lee, H-J. Lee, S. Ahn, J. Kim, H. Jeon, and T. Yao: Ordered arrays of ZnO nanorods grown on periodically polarity-inverted surfaces. Nano Lett. 8, 2419 (2008).
J.R. Morber, Y. Ding, M.S. Haluska, Y. Li, J.P. Liu, Z.L. Wang, and R.L. Snyder: PLD-assisted VLS growth of aligned ferrite nanorods, nanowires, and nanobelts-synthesis, and properties. J. Phys. Chem. B 110, 21672 (2006).
X.Y. Kong and Z.L. Wang: Spontaneous polarization-induced nanohelixes, nanosprings, and nanorings of piezoelectric nanobelts. Nano Lett. 3, 1625 (2003).
J.Y. Lao, J.Y. Huang, D.Z. Wang, and Z.F. Ren: ZnO nanobridges and nanonails. Nano Lett. 3, 235 (2003).
P.X. Gao and Z.L. Wang: Mesoporous polyhedral cages and shells formed by textured self-assembly of ZnO nanocrystals. J. Am. Chem. Soc. 125, 11299 (2003).
M.Q. Israr, J.R. Sadaf, L.L. Yang, O. Nur, M. Willander, J. Palisaitis, and P.O.A. Persson: Trimming of aqueous chemically grown ZnO nanorods into ZnO nanotubes and their comparative optical properties. Appl. Phys. Lett. 95, 073114 (2009).
S.P. Garcia and S. Semancik: Controlling the morphology of zinc oxide nanorods crystallized from aqueous solutions: The effect of crystal growth modifiers on aspect ratio. Chem. Mater. 19, 4016 (2007).
J.R. Sadaf, M.Q. Israr, S. Kishwar, O. Nur, and M. Willander: White electroluminescence using ZnO nanotubes/GaN heterostructure light-emitting diode. Nanoscale Res. Lett. 5, 957 (2010).
X. Duan, Y. Huang, R. Agarwal, and C.M. Lieber: Single-nanowire electrically driven lasers. Nature 421, 241 (2003).
T.S. Ahmadi, Z.L. Wang, T.C. Green, A. Henglein, and M.A. El-Sayed: Shape-controlled synthesis of colloidal platinum nanoparticles. Science 272, 1924 (1996).
C. Wang, M. Waje, X. Wang, J.M. Tang, and R.C. Haddon: Proton exchange fuel cells with carbon nanotube based electrodes. Nano Lett. 4, 345 (2004).
J. Liu, X. Huang, K.M. Sulieman, F. Sun, and X. He: Solution-based growth and optical properties of self-assembled monocrystalline ZnO ellipsoids. J. Phys. Chem. B 110, 10612 (2006).
Y. Zeng, T. Zhang, W. Fu, Q. Yu, G. Wang, Y. Zhang, Y. Sui, L. Wang, C. Shao, Y. Liu, H. Yang, and G. Zou: Fabrication and optical properties of large-scale nutlike ZnO microcrystals via a low-temperature hydrothermal route. J. Phys. Chem. C 113, 8016 (2009).
B. Liu and H.C. Zeng: Hollow ZnO microspheres with complex nanobuilding units. Chem. Mater. 19, 5824 (2007).
A.S. Myerson: Handbook of Industrial Crystallization, 2nd ed.; Butterworth-Heinemann: Boston, 2001; p. 45.
D. Turnbull and B. Vonnegut: Nucleation catalysis. Ind. Eng. Chem. 44, 1292 (1952).
B.G. Wang, E.W. Shi, and W.Z. Zhong: Twinning morphologies and mechanisms of ZnO crystallites under hydrothermal conditions. Cryst. Res. Technol. 33, 937 (1998).
P. Jiang, J-J. Zhou, H-F. Fang, C-Y. Wang, Z.L. Wang, and S-S. Xie: Hierarchical shelled ZnO structures made of bunched nanowire arrays. Adv. Funct. Mater. 17, 1303 (2007).
Y-F. Gao, H-Y. Miao, H-J. Luo, M. Nagai, and J-J. Shyue: Morphological and crystallographic transformation of ZnO in solution. J. Phys. Chem. C 112, 1498 (2008).
S. Jamil-Rana, M. Israr-Qadir, O. Nur, and M. Willander: Naturally oxidized synthesis of ZnO dahlia-flower nanoarchitecture. Ceram. Int. 40, 13667 (2014).
D-F. Zhang, L-D. Sun, J. Zhang, Z-G. Yan, and C-H. Yan: Hierarchical construction of ZnO architectures promoted by heterogeneous nucleation. Cryst. Growth Des. 8, 3609 (2008).
A.B. Djurišić, Y.H. Leung, K.H. Tam, Y.F. Hsu, L. Ding, W.K. Ge, Y.C. Zhong, K.S. Wong, W.K. Chan, H.L. Tam, K.W. Cheah, W.M. Kwok, and D.L. Phillips: Defect emissions in ZnO nanostructures. Nanotechnology 18, 095702 (2007).
B. Panigrahy, M. Aslam, D.S. Misra, M. Ghosh, and D. Bahadur: Defect-related emissions and magnetization properties of ZnO nanorods. Adv. Funct. Mater. 20, 1161 (2010).
M. Willander, M.Q. Israr, S.J. Rana, and O. Nur: Progress on one-dimensional zinc oxide nanomaterials based photonic devices. Nanophotonics 1, 99 (2012).
C. Klingshirn: ZnO: From basics towards applications. Phys. Status Solidi B 244, 3027 (2007).
Q.X. Zhao, P. Klason, M. Willander, H.M. Zhong, W. Lu, and J.H. Yang: Deep-level emissions influenced by O and Zn implantations in ZnO. Appl. Phys. Lett. 87, 211912 (2005).
Y. Sun, G.M. Fuge, N.A. Fox, D.J. Riley, and M.N.R. Ashfold: Synthesis of aligned arrays of ultrathin ZnO nanotubes on a Si wafer coated with a thin ZnO film. Adv. Mater. 17, 2477 (2005).
ACKNOWLEDGMENTS
We are humbly grateful to Prof. Le Si Dang from the Institut Néel-CNRS, Grenoble, France, for his help regarding cathodoluminescence measurements. The authors also acknowledge the financial support from the Higher Education Commission (HEC), Pakistan.
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Israr-Qadir, M., Jamil-Rana, S., Nur, O. et al. Cathodoluminescence characterization of ZnO nanorods synthesized by chemical solution and of its conversion to ellipsoidal morphology. Journal of Materials Research 29, 2425–2431 (2014). https://doi.org/10.1557/jmr.2014.242
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DOI: https://doi.org/10.1557/jmr.2014.242