Necessity of interlayer in tandem organic solar cells composed of a bulk heterojunction unit cell and the equivalent circuit

Shuo Lan, Yoshinori Kimoto, Katsuhiko Fujita

研究成果: ジャーナルへの寄稿学術誌査読

1 被引用数 (Scopus)

抄録

In an inverted tandem organic solar cell with a bulk heterojunction (BHJ) unit cell, strange s-shape appears in the current-voltage characteristics. We prepared a tandem cell composed of a BHJ bottom unit cell and a p-n stack type top unit cell with an interlayer in between the unit cells. Since the BHJ active layer has symmetric structure, an electron blocking layer is indispensable in the interlayer. The photovoltaic characteristics can be reproduced by an equivalent circuit with an inverted diode between two unit cells. The s-shape can be understood in terms of the reverse rectification by the electron blocking layer.

本文言語英語
ページ(範囲)249-255
ページ数7
ジャーナルMolecular Crystals and Liquid Crystals
654
1
DOI
出版ステータス出版済み - 9月 2 2017

!!!All Science Journal Classification (ASJC) codes

  • 化学 (全般)
  • 材料科学(全般)
  • 凝縮系物理学

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