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Self-assembly supramolecules to enhance electrical conductivity of polyaniline for a flexible organic solar cells anode

Title
Self-assembly supramolecules to enhance electrical conductivity of polyaniline for a flexible organic solar cells anode
Author
김성훈
Keywords
Polyaniline; Self-assembly; Organic solar cells; Polymer electrode; Crystallinity
Issue Date
2012-06
Publisher
Elsevier Science B.V
Citation
Solar Energy Materials and Solar Cells, 2012, 101, P.232-240
Abstract
A high performance and cost effective polyaniline doped with camphorsulfonic acid (PANI:CSA) based thin film was prepared for a flexible electrode. A high crystalline structure was introduced to prevent the decreased orientation of PANI film to overcome a conductivity dropping with decreasing film thickness because of the recoiling of the polymer chains. An optimum structure is selected according to the various analyses such as self-assembled degree, crystallinity, and the blending properties with PANI. The additive, named self-assembly supramolecules (SAS), was successfully blended with PANI chains. PANI film blended with the most suitable SAS (PANI:CSA/SAS18) exhibited high conductivity of 843 S/cm and a high optical transparency of 86% at 550 nm that was thinner than 200 nm of film thickness. The flexible organic solar cells (OSCs) device adapted to our electrode shows a higher power conversion efficiency of 1.73% than a pristine PANI:CSA electrode at 0.40%. Furthermore, it was possible to induce long environmental stability under numerous device operating cycles since PANI:CSA/SAS18 had a lower acidity compared with the PEDOT:PSS conventional polymer electrode. The efficiency of our OSC device remains more than 90% after 500 h, while that of OSC device made of PEDOT:PSS decreased approximately 30% of their initial efficiency after 500 h. The PANI based OSCs electrode developed in this study has the potential for consideration as a novel polymer electrode in a flexible display. (C) 2012 Elsevier B.V. All rights reserved.
URI
https://www.sciencedirect.com/science/article/pii/S0927024812000566?via%3Dihubhttp://hdl.handle.net/20.500.11754/67117
ISSN
0927-0248; 1879-3398
DOI
10.1016/j.solmat.2012.01.040
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ORGANIC AND NANO ENGINEERING(유기나노공학과) > Articles
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