Fundamental Study on Organic Solar Cells Based on Soluble Zinc Phthalocyanine

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概要

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• We investigated the potential of trifluoroethoxy-coated phthalocyanine [(4TFEO)4-ZnPc] as an organic thin-film solar cell material. (4TFEO)4-ZnPc dissolves well in several organic solvents, thus a fluorinated phthalocyanine (Pc) thin film can be fabricated by a wet process. Additionally, (4TFEO)4-ZnPc has lowest unoccupied molecular orbital (LUMO) energy level close to that of a fullerene derivative owing to the electron-withdrawing effect of fluorine substituents. We fabricated two types of fluorinated Pc solar cells by spin casting ``(4TFEO)4-ZnPc single-layer solar cells'' and ``two-layer heterojunction solar cells'' consisting of a (4TFEO)4-ZnPc layer and a poly(3-hexylthiophene) (P3HT) layer. P3HT is a common donor solar cell material. On the other hand, we used (4TFEO)4-ZnPc as an acceptor material. For the single-layer solar cells, the (4TFEO)4-ZnPc film acts as the photoactive layer of the solar cells, and P3HT/(4TFEO)4-ZnPc solar cell properties were improved as compared with that of P3HT or (4TFEO)4-ZnPc single-layer solar cells. Additionally, the photovoltaic properties of these solar cells were significantly improved by annealing treatment.

• 2012-04-25

著者

• Soga Tetsuo

  Department Of Electronics Faculty Of Engineering Nagoya University

• Umeda Masashi

  Department Of Frontier Materials Graduate School Of Engineering Nagoya Institute Of Technology

• Shibata Norio

  Department Of Applied Chemistry Graduate School Of Engineering Nagoya Institute Of Technology

• Hayashi Yasuhiko

  Department Of Cardiology Cardiovascular Center Tsuchiya General Hospital

• Yamada Ichiko

  Department of Electrical and Electronic Engineering, Suzuka National College of Technology, Suzuka, Mie 510-0294, Japan

• Umeda Masashi

  Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan

• Soga Tetsuo

  Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan

• Shibata Norio

  Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan

• Soga Tetsuo

  Department of Electrical and Computer Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466

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