Improvement of heterojunction donor/acceptor organic photovoltaic devices by employing additional active layer

Kuwat Triyana, Takeshi Yasuda, Katsuhiko Fujita, Tetsuo Tsutsui

研究成果: ジャーナルへの寄稿学術誌査読

7 被引用数 (Scopus)

抄録

Single-heterojunction (HJ) donor/acceptor photovoltaic devices composed of copper phtalocyanine (CuPc) and 3,4,9,10-perylenetetracarboxylic bis-benzimidazole (PTCBI) sandwiched between indium-tin-oxide (ITO) and Ag top electrode were investigated. An improvement in device performance was obtained by inserting another perylene derivative, 3,4,9,10-perylenetetracarboxylic diimide (PTCDI) between the CuPc and the PTCBI layers. In this case, the PTCDI and the PTCBI act as an active layer and a buffer, respectively. The active layer increased the absorption efficiency of incident photons, while the buffer provided an ohmic contact with the Ag top electrode. The power conversion efficiency (PCE) was improved from 0.81% for the reference device (without a PTCDI layer) to 1.13% for the optimized single-HJ device (with a PTCDI layer). The concept found in the single-HJ device was introduced into the stacked tandem triple-HJ devices. The improvement of power conversion efficiency, however, was achieved by inserting the PTCDI layer between the PTCBI and the top electrode.

本文言語英語
ページ(範囲)1974-1977
ページ数4
ジャーナルJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
44
4 A
DOI
出版ステータス出版済み - 4月 2005

!!!All Science Journal Classification (ASJC) codes

  • 工学(全般)
  • 物理学および天文学(全般)

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