Fundamental study on organic solar cells based on soluble zinc phthalocyanine

Ichiko Yamada, Masashi Umeda, Yasuhiko Hayashi, Tetsuo Soga, Norio Shibata

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

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 electronwithdrawing 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.

Original languageEnglish
Article number04DK09
JournalJapanese Journal of Applied Physics
Volume51
Issue number4 PART 2
DOIs
Publication statusPublished - Apr 2012
Externally publishedYes

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Solar cells
Zinc
zinc
solar cells
acceptor materials
Organic solar cells
Molecular orbitals
Fullerenes
Fluorine
Organic solvents
thin films
Electron energy levels
Heterojunctions
Casting
fullerenes
fluorine
heterojunctions
molecular orbitals
Annealing
energy levels

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Fundamental study on organic solar cells based on soluble zinc phthalocyanine. / Yamada, Ichiko; Umeda, Masashi; Hayashi, Yasuhiko; Soga, Tetsuo; Shibata, Norio.

In: Japanese Journal of Applied Physics, Vol. 51, No. 4 PART 2, 04DK09, 04.2012.

Research output: Contribution to journalArticle

Yamada, Ichiko ; Umeda, Masashi ; Hayashi, Yasuhiko ; Soga, Tetsuo ; Shibata, Norio. / Fundamental study on organic solar cells based on soluble zinc phthalocyanine. In: Japanese Journal of Applied Physics. 2012 ; Vol. 51, No. 4 PART 2.
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