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Long-Term Operation Tests Of Organic Solid-State Solar Cells

Author

Listed:
  • HIROKI SHIOKAWA

    (Material and Life Science, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka Suita, Osaka 565-0871, Japan)

  • MASAAKI YOKOYAMA

    (Center for Advanced Science and Innovation, Osaka University, 2-1 Yamada-oka Suita, Osaka 565-0871, Japan)

  • MASAHIRO HIRAMOTO

    (Material and Life Science, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka Suita, Osaka 565-0871, Japan)

Abstract

The long-term operation tests of two types of solid-state organic photovoltaic (OPV) cells, p–n heterojunction type cells and p–i–n junction type cells, were performed. In both cells, a drastic decrease in photocurrent within 1 h was observed in air. This rapid decrease was revealed to be caused by oxygen molecules which act as a electron trap in the electron transporting organic layer. Initial decrease of photocurrent was effectively suppressed under high vacuum (10-7Torr). In the case of a p–n type cell, the decrease in short-circuit photocurrent was only 15% even under prolonged light irradiation of 260 h.

Suggested Citation

  • Hiroki Shiokawa & Masaaki Yokoyama & Masahiro Hiramoto, 2007. "Long-Term Operation Tests Of Organic Solid-State Solar Cells," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 14(04), pages 539-542.
    • Handle: RePEc:wsi:srlxxx:v:14:y:2007:i:04:n:s0218625x07009803
    DOI: 10.1142/S0218625X07009803
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