Evaluating carrier accumulation in degraded bulk heterojunction organic solar cells by a Thermally stimulated current technique

Kenji Kawano, Chi Haya Adachi

研究成果: ジャーナルへの寄稿学術誌査読

123 被引用数 (Scopus)

抄録

Here, the initial photo-degradation of encapsulated P3HT:PCBM bulk heterojunction organic solar cells is investigated. The degraded device is recovered by thermal annealing treatment. Thermally stimulated current measurements reveal that the cause of photo-degradation is carrier accumulation and that the degraded organic solar cell has two broad trap levels, of 0.71 and 0.81 eV. These traps are independent of the thickness of the photoactive layers, the mixing ratio of the photoactive materials and the cathode materials. In addition, it is confirmed that there is a close relationship between the degree of degradation and the amount of accumulated charge carriers.

本文言語英語
ページ(範囲)3934-3940
ページ数7
ジャーナルAdvanced Functional Materials
19
24
DOI
出版ステータス出版済み - 12月 23 2009

!!!All Science Journal Classification (ASJC) codes

  • 化学一般
  • 材料科学一般
  • 凝縮系物理学

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