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http://dx.doi.org/10.4191/kcers.2018.55.2.09

Micro-Cavity Effect of ZnO/Ag/ZnO Multilayers on Green Quantum Dot Light-Emitting Diodes  

Lee, Hyungin (Department of Advanced Materials Engineering, Kyonggi University)
Kim, Jiwan (Department of Advanced Materials Engineering, Kyonggi University)
Publication Information
Abstract
ZnO/Ag/ZnO multilayers were fabricated and their optical properties were investigated in terms of the micro-cavity effect in electroluminescent devices based on colloidal quantum dots. The top and bottom ZnO layers were formed by a sol-gel method while the middle Ag layer was deposited by thermal evaporation. After the fabrication of the ZnO/Ag/ZnO structure, the transmittance increased to 74%. When the oxide/metal/oxide multilayers were applied to quantum dot light-emitting diodes, the color purity was enhanced due to the narrower full width at half maximum.
Keywords
ZnO; Optical properties; Sol-gel process;
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Times Cited By KSCI : 2  (Citation Analysis)
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1 Z. Lin, J. Chang, C. Jiang, J. Zhang, J. Wu, and C. Zhu, "Enhanced Inverted Organic Solar Cell Performance by Post-Treatments of Solution-Processed ZnO Buffer Layers," RSC Adv., 4 [13] 6646-51 (2014).   DOI
2 T. L. Temple, G. D. K. Mahanama, H. S. Reehal, and D. M. Bagnall, "Influence of Localized Surface Plasmon Excitation in Silver Nanoparticles on the Performance of Silicon Solar Cells," Sol. Energy Mater. Sol. Cells, 93 [11] 1978-82 (2009).   DOI
3 L. Qian, Y. Zheng, J. Xue, and P. H. Holloway, "Stable and Efficient Quantum-Dot Light-Emitting Diodes Based on Solution-Processed Multilayer Structures," Nat. Photonics, 5 543-48 (2011).   DOI
4 J. Lim, W. K. Bae, J. Kwak, S. Lee, C. Lee, and K. Char, "Perspective on Synthesis, Device Structures, and Printing Processes for Quantum Dot Displays," Opt. Mater. Express, 2 [5] 594-628 (2012).   DOI
5 P. E. Burrows, G. Gu, S. R. Forrest, E. P. Vicenzi, and T. X. Zhou, "Semitransparent Cathodes for Organic Light Emitting Devices," J. Appl. Phys., 87 [6] 3080-85 (2000).   DOI
6 F. Ruffino, E. Carria, S. Kimiagar, I. Crupi, F. Simone, and M. G. Grimaldi, "Formation and Evolution of Nanoscale Metal Structure on ITO Surface by Nanosecond Laser Irradiation of Thin Au and Ag Films," Sci. Adv. Mater., 4 [7] 708-18 (2012).   DOI
7 R. B. Pode, C. J. Lee, D. G. Moon, and J. I. Han, "Transparent Conducting Metal Electrode for Top Emission Organic Light-Emitting Devices: Ca-Ag Double Layer," Appl. Phys. Lett., 84 [23] 4614-16 (2004).   DOI
8 M. Purica, E. Budianu, E. Rusu, M. Danila, and R. Gavrila, "Optical and Structural Investigation of ZnO Thin Films Prepared by Chemical Vapor Deposition (CVD)," Thin Solid Films, 403-404 485-88 (2002).   DOI
9 M. H. Ahn, E. S. Cho, and S. J. Kwon, "Characteristics of ITO-Resistive Touch Film Deposited on a PET Substrate by In-Line DC Magnetron Sputtering," Vacuum, 101 221-27 (2007).
10 T. Minami, H. Sonohara, T. Kakumu, and S. Takata, "Physics of Very Thin ITO Conducting Films with High Transparency Prepared by DC Magnetron Sputtering," Thin Solid Films, 270 37-42 (1995).   DOI
11 V. Bhosle, A. Tiwari, and J. Narayan, "Metallic Conductivity and Metal-Semiconductor Transition in Ga-Doped ZnO," Appl. Phys. Lett., 88 [3] 032106 (2006).   DOI
12 E.-S. Jang, "Recent Progress in Synthesis of Plate-like ZnO and its Applications: A Review," J. Korean Ceram. Soc., 54 [3] 167-83 (2017).   DOI
13 H. Han, N. D. Theodore, and T. L. Alford, "Improved Conductivity and Mechanism of Carrier Transport in Zinc Oxide with Embedded Silver Layer," J. Appl. Phys., 103 [1] 013708 (2008).   DOI
14 K. H. Lee, J. H. Lee, H. D. Kang, B. Park, Y. Kwon, H. Ko, C. Lee, J. Lee, and H. Yang, "Over 40 cd/A Efficient Green Quantum Dot Electroluminescent Device Comprising Uniquely Large-Sized Quantum Dots," ACS Nano, 8 [5] 4893-901 (2014).   DOI
15 D. R. Sahu, and J. L. Huang, "High Quality Transparent Conductive ZnO/Ag/AnO Multilayer Films Deposited at Room Temperature," Thin Solid Films, 515 876-79 (2006).   DOI
16 T. H. Kim, K. S. Cho, E. K. Lee, S. J. Lee, J. Chae, J. W. Kim, D. H. Kim, J. Y. Kwon, G. Amaratunga, S. Y. Lee, B. L. Choi, Y. Kuk, J. M. Kim, and K. Kim, "Full-Colour Quantum Dot Displays Fabricated by Transfer Printing," Nat. Photonics, 5 176-82 (2011).   DOI
17 C. Y. Han, and H. Yang, "Development of Colloidal Quantum Dots for Electrically Driven Light-Emitting Devices," J. Korean Ceram. Soc., 54 [6] 449-69 (2017).   DOI