Influence of surface roughness of aluminum-doped zinc oxide buffer layers on the performance of inverted organic solar cells

Aluminum-doped zinc oxide (AZO) films (70 nm thick) with dissimilar surface roughness were created on indium tin oxide coated glass and were used as electrodes for inverted organic solar cells. The photovoltaic performance of the devices depended strongly on the surface roughness of the AZO films. I...

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Bibliographic Details
Published in:Applied physics letters 2011-01, Vol.98 (2), p.023102-023102-3
Main Authors: Cho, Sung-Woo, Kim, Young Tae, Shim, Won Hyun, Park, Sun-Young, Kim, Kwang-Dae, Seo, Hyun Ook, Dey, Nilay Kumar, Lim, Jae-Hong, Jeong, Yongsoo, Lee, Kyu Hwan, Kim, Young Dok, Lim, Dong Chan
Format: Article
Language:English
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Summary:Aluminum-doped zinc oxide (AZO) films (70 nm thick) with dissimilar surface roughness were created on indium tin oxide coated glass and were used as electrodes for inverted organic solar cells. The photovoltaic performance of the devices depended strongly on the surface roughness of the AZO films. Increases in the surface root-mean-square roughness of AZO films from 2.5 to 10.9 nm enhanced power conversion efficiency from 0.5% to 1.4% due to increased contact area between electrode and active layer.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.3537961