Flexible Ag electrode for use in organic photovoltaics

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• 作者：Soniya D. Yambem ; ^a ; ^{sdyambem@mail.uh.edu"" rel=""nofollow} ; Kang-Shyang Liao^a ; Seamus A. Curran^a
• 关键词：Organic photovoltaics ; Transparent electrode ; Thin metal films
• 刊名：Solar Energy Materials and Solar Cells
• 出版年：2011
• 出版时间：November 2011
• 年：2011
• 卷：95
• 期：11
• 页码：3060-3064
• 全文大小：432 K

文摘

High efficiency organic photovoltaic cells discussed in literature are normally restricted to devices fabricated on glass substrates. This is a consequence of the extreme brittleness and inflexibility of the commonly used transparent conductive oxide electrode, indium tin oxide (ITO). This shortcoming of ITO along with other concerns such as increasing scarcity of indium, migration of indium to organic layer, etc. makes it imperative to move away from ITO. Here we demonstrate a highly flexible Ag electrode that possesses low sheet resistances even in ultra-thin layers. It retains its conductivity under severe bending stresses where ITO fails completely. A P3HT:PCBM blend organic solar cell fabricated on this highly flexible electrode gives an efficiency of 2.3 % .