OJAppS  Vol.8 No.10 , October 2018
Blue-Red Tuning Emission of ZnO: Europium Quantum Dots with Different Excitation Wavelengths
Optoelectronic applications require the development of new fluorescent and efficient luminescent materials, free of toxicity, low in cost, and easy to produce. In this way the synthesis of zinc-oxide (ZnO) quantum dots (QDs) has recently received special attention due to their good optical, electrical and chemical properties with low production costs and blue light emission. In this work ZnO QDs were successfully doped with europium in order to obtain a tunable emission luminescence from blue emission of ZnO to red emission of europium as a function of wavelength excitation. Results show an efficient blue to red tuning when the excitation wavelength was changed from 317 nm to 395 nm, respectively. This opens the possibility of having new optical devices to produce different color emission using the same material.
Cite this paper
Maldonado, P. , Chavez-Alvarado, A. , Gutierrez, F. , Miranda, J. , Velazquez, D. , Barron, M. and García, E. (2018) Blue-Red Tuning Emission of ZnO: Europium Quantum Dots with Different Excitation Wavelengths. Open Journal of Applied Sciences, 8, 441-445. doi: 10.4236/ojapps.2018.810034.
[1]   Monticone, S., Tufeu, R. and Kanaev, A.V. (1998) Complex Nature of the UV and Visible Fluorescence of Colloidal ZnO Nanoparticles. Journal of Physical Chemistry B, 102, 2854-2862.

[2]   Xiao, J.B., Zhao, Y.R., Mao, F.F., Liu, J., Wu, M.X. and Yu, X.B. (2012) Investigation of the Toxic Effect of a QDs Heterojunction on the Interactions between Small Molecules and Plasma Proteins by Fluorescence and Resonance Light-Scattering Spectra. Analyst, 137, 195-201.

[3]   Jana, N.R., Yu, H.H., Ali, E.M., Zheng, Y.G. and Ying, J.Y. (2007) Controlled Photostability of Luminescent Nanocrystalline ZnO Solution for Selective Detection of Aldehydes. Chemical Communications, 1406-1408.

[4]   Xiong, H.M., Xu, Y., Ren, Q.G. and Xia, Y.Y. (2008) Stable Aqueous ZnO@Polymer Core-Shell Nanoparticles with Tunable Photoluminescence and Their Application in Cell Imaging. Journal of the American Chemical Society, 130, 7522-7523.

[5]   Mari, B., Mollar, M., Mechkour, A., Hartiti, B., Perales, M. and Cembrero, J. (2004) Optical Properties of Nanocolumnar ZnO Crystals. Microelectronics Journal, 35, 79-82.

[6]   Chander, R. and Raychaudhuri, A.K. (2008) Electrodeposition of Aligned Arrays of ZnO Nanorods in Aqueous Solution. Solid State Communications, 145, 81-85.

[7]   Vanpoucke, D.E.P. (2014) Comment on “Europium Doping Induced Symmetry Deviation and Its Impact on the Second Harmonic Generation of Doped ZnO Nanowire”. Nanotechnology, 25, Article ID: 458001.

[8]   Zhong, W.W., Guan, D.W., Liu, Y.L., Zhang, L., Liu, Y.P., Li, Z.G. and Chen, W.P. (2012) Effect of Annealing on the Structure and Photoluminescence of Eu-Doped ZnO Nanorods Ordered Array Thin Films. Journal of Nanomaterials, 2012, Article ID: 263679.

[9]   Zeng, H., Duan, G., Li, Y., Yang, S., Xu, X. and Cai, W. (2010) Blue Luminescence of ZnO Nano-Particles Based on Non-Equilibrium Processes: Defect Origins and Emission Controls. Advanced Functional Materials, 20, 561-572.

[10]   Goourey, G.G., Claire, P.S., Balan, L. and Israeli, Y. (2013) Acrylate Photopolymer Doped with ZnO Nanoparticles: An Interesting Candidate for Photo-Patterning Applications. Journal of Materials Chemistry C, 1, 3430-438.

[11]   Sil, D. and Chakrabarti, S. (2010) Photocatalytic Degradation of PVC-ZnO Composite Film under Tropical Sunlight and Artificial UV Radiation: A Comparative Study. Solar Energy, 84, 476-485.

[12]   Ellmer, K., Klein, A. and Rech, B. (2007) Transparent Conductive Zinc Oxide: Basics and Applications in Thin Film Solar Cells. Springer Series in Materials Science, Springer, Berlin, Heidelberg.

[13]   Ozgur, O., Alivov, Y.I., Liu, C., Teke, A., Reshchikov, M., Dogan, S., Avrutin, V., Cho, S.J. and Morkoc, H. (2005) A Comprehensive Review of ZnO Materials and Devices. Journal of Applied Physics, 98, 11.

[14]   Natsume, Y. and Sakata, H. (2002) Electrical and Optical Properties of Zinc Oxide Films Post-Annealed in H2 after Fabrication by Sol-Gel Process. Materials Chemistry and Physics, 78, 170-176.