Communication

Self-Organized Buffer Layers in Organic Solar Cells†

  1. Qingshuo Wei1,
  2. Takeshi Nishizawa1,
  3. Keisuke Tajima1,*,
  4. Kazuhito Hashimoto1,2,*

Article first published online: 6 MAY 2008

DOI: 10.1002/adma.200792876

Issue

Advanced Materials

Advanced Materials

Volume 20, Issue 11, pages 2211–2216, June 4, 2008

Additional Information

How to Cite

Wei, Q., Nishizawa, T., Tajima, K. and Hashimoto, K. (2008), Self-Organized Buffer Layers in Organic Solar Cells. Advanced Materials, 20: 2211–2216. doi: 10.1002/adma.200792876

Author Information

  1. 1

    Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan)

  2. 2

    HASHIMOTO Light Energy Conversion Project, Exploratory Research for Advanced Technology (ERATO), Japan Science Technology Agency (JST), Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan)

*Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan).

  1. †

    We thank Prof. Seki (Nagoya University) and Dr. Yoshida (The University of Tokyo) for helpful discussions, Dr. Mori and Mr. Miyazaki (Sumitomo Heavy Industries) for photoelectron yield spectroscopy measurements, Dr. Nakano for 19F NMR measurements, and Mr. Miyanishi for the polymer synthesis. Supporting Information is available online from Wiley InterScience or from the authors.

Publication History

  1. Issue published online: 5 JUN 2008
  2. Article first published online: 6 MAY 2008
  3. Manuscript Received: 20 NOV 2007

SEARCH

SEARCH BY CITATION

ARTICLE TOOLS

Get PDF (158K)

Keywords:

  • fullerenes;
  • heterojunctions;
  • self-organization;
  • solar cells;
  • thin films

Graphical Abstract

Thumbnail image of graphical abstract

A fullerene derivative with a fluorocarbon chain is applied in bulk-heterojunction polymer solar cells (see figure). When a small amount of F-PCBM is mixed in, it spontaneously migrates to the surface of the organic layer during spin-casting owing to the low surface energy of the fluorocarbon. A very thin buffer layer between the polymer and the metal electrode is formed in one step, resulting in improved photovoltaic performance.

Get PDF (158K)