Influence of charge accumulation of photogenerated carriers in the vicinity of donor/acceptor interface on the open-circuit voltage of zinc-porphyrin/ C60 heterojunction organic photovoltaic cells

Sou Ryuzaki; Jun Onoe

doi:10.1088/0022-3727/44/26/265102

Influence of charge accumulation of photogenerated carriers in the vicinity of donor/acceptor interface on the open-circuit voltage of zinc-porphyrin/ C₆₀ heterojunction organic photovoltaic cells

Sou Ryuzaki, Jun Onoe

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

The correlation between open-circuit voltage (V_OC) and built-in potential (V_bi) upon photo-irradiation in the vicinity of the donor/acceptor (D/A) interface in zinc-octaethylporphyrin [Zn(OEP)]/C ₆₀ heterojunction photovoltaic (OPV) cells is investigated by examining the capacitance-voltage (C-V) characteristics. Charge accumulation of photogenerated carriers in the vicinity of the D/A interface is found to enlarge V_bi of both D [Zn(OEP)] and A (C₆₀) films in the vicinity of the interface. In addition, it is noted that V_OC is in good agreement with the sum of V_bi of each film in the vicinity of the D/A interface. This suggests that charge accumulation of photogenerated carriers in the vicinity of the D/A interface plays a key role in determining V _OC for solar cells.

Original language	English
Article number	265102
Journal	Journal of Physics D: Applied Physics
Volume	44
Issue number	26
DOIs	https://doi.org/10.1088/0022-3727/44/26/265102
Publication status	Published - Jul 6 2011
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Acoustics and Ultrasonics
Surfaces, Coatings and Films

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This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1088/0022-3727/44/26/265102

Cite this

Influence of charge accumulation of photogenerated carriers in the vicinity of donor/acceptor interface on the open-circuit voltage of zinc-porphyrin/ C₆₀ heterojunction organic photovoltaic cells. / Ryuzaki, Sou; Onoe, Jun.
In: Journal of Physics D: Applied Physics, Vol. 44, No. 26, 265102, 06.07.2011.

Research output: Contribution to journal › Article › peer-review

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