Embedment of nano-sized Ag layer into Ag-doped In2O3 films for use as highly transparent and conductive anode in organic solar cells

被引：13
作者：
Cho, Da-Young [1 ]
Na, Seok-In [2 ]
Chung, Kwun-Bum [3 ]
Kim, Han-Ki [1 ]
机构：
[1] Kyung Hee Univ, Dept Adv Mat Engn Informat & Elect, Yongin 446701, Gyeonggi Do, South Korea
[2] Chonbuk Natl Univ, Polymer Mat Fus Res Ctr, Profess Grad Sch Flexible & Printable Elect, Jeonju 561756, Jeollabuk Do, South Korea
[3] Dongguk Univ, Div Phys & Semicond Sci, Seoul 100715, South Korea
来源：
APPLIED SURFACE SCIENCE | 2015年 / 347卷
关键词：
Ag-doped In2O3; Nano sized Ag layer; AIO/Ag/AIO multilayer; Organic solar cells; Transparent electrode; Power conversion efficiency; MULTILAYER FILMS; LOW-RESISTANCE; FABRICATION; ELECTRODES;
D O I：
10.1016/j.apsusc.2015.04.055
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
By inserting a nano-sized Ag layer between bottom Ag-doped In2O3 (AIO) and a top AIO layer, we were able to control the sheet resistance and optical transmittance of AIO films for application in organic solar cells (OSCs) as a transparent electrode. To optimize the AIO/Ag/AIO multilayer, we investigated the electrical, optical, structural and morphological properties of the AIO/AgIAIO multilayer as a function of Ag interlayer thickness with a constant bottom and top AIO thickness of 35 nm. The optimized AIO/AgIAIO multilayer showed a much lower resistivity of 3.988 x 10(-5) Omega cm and a higher optical transmittance of 84.79% than the values (4.625 x 10(-4) Omega cm and 78.36%) of the single AIO film, due to the high conductivity of the metallic Ag layer and the antireflection effect of the symmetric AIO/Ag/AIO structure. In addition, we investigated the performances of OSCs with AIO/AgIAIO electrodes as a function of Ag interlayer thickness to determine the optimal Ag thickness to produce a high power conversion efficiency (PCE) of the OSCs. Based on the PCE of the OSCs, we correlated the performance of the OSCs with the Ag interlayer thickness in the AIO/Ag/AIO multilayer and suggested a possible mechanism to explain the dependency of PCE on Ag thickness in AIO/Ag/AIO multilayer electrodes. (C) 2015 Elsevier B.V. All rights reserved.
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页码：88 / 95
页数：8
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