MgxZn1–xO/Ag/MgxZn1–xO Multilayers As High-Performance Transparent Conductive Electrodes

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• 作者：Hyo-Ju Lee ; Jang-Won Kang ; Sang-Hyun Hong ; Sun-Hye Song ; Seong-Ju Park
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2016
• 出版时间：January 27, 2016
• 年：2016
• 卷：8
• 期：3
• 页码：1565-1570
• 全文大小：407K
• ISSN：1944-8252

文摘

We report on the optical and electrical properties of Mg_xZn_1–xO/Ag/Mg_xZn_1–xO transparent conductive electrodes. The transmittance and sheet resistance of Mg_xZn_1–xO/Ag/Mg_xZn_1–xO multilayers deposited at room temperature were strongly dependent on the thickness and surface morphology of Ag layer. The optical absorption edge of Mg_xZn_1–xO/Ag/Mg_xZn_1–xO showed a blue shift with increasing Mg composition due to the increased band gap of Mg_xZn_1–xO. The Haack figure of merit value of Mg_0.28Zn_0.72O/Ag/Mg_0.28Zn_0.72O with a 14 nm-thick Ag layer, which has a sheet resistance of 6.36 Ω/sq and an average transmittance of 89.2% at wavelengths in the range from 350 to 780 nm, was 69% higher than that of a ZnO/Ag/ZnO multilayer electrode. These results indicate that Mg_xZn_1–xO/Ag/Mg_xZn_1–xO multilayers, which also show low surface roughness, can be used as highly conductive transparent electrodes in various optoelectronic devices operating over a wide wavelength region.