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

Tae Hwan Lim, Kyung Wha Oh, Seong Hun Kim

Research output: Contribution to journalArticle

21 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)232-240
Number of pages9
JournalSolar Energy Materials and Solar Cells
Volume101
DOIs
StatePublished - 2012 Jun 1

Fingerprint

Polyaniline
Self assembly
Anodes
Electrodes
Polymers
Acids
Film thickness
Flexible displays
Acidity
Crystal orientation
Transparency
Conversion efficiency
Electric Conductivity
Organic solar cells
polyaniline
Crystalline materials
Thin films
Costs

Keywords

  • Crystallinity
  • Organic solar cells
  • Polyaniline
  • Polymer electrode
  • Self-assembly

Cite this

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title = "Self-assembly supramolecules to enhance electrical conductivity of polyaniline for a flexible organic solar cells anode",
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.",
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Self-assembly supramolecules to enhance electrical conductivity of polyaniline for a flexible organic solar cells anode. / Lim, Tae Hwan; Oh, Kyung Wha; Kim, Seong Hun.

In: Solar Energy Materials and Solar Cells, Vol. 101, 01.06.2012, p. 232-240.

Research output: Contribution to journalArticle

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AB - 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.

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