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has been cited by the following article:

• TITLE: Fabrication and Characterization of PCBM:P3HT Bulk Heterojunction Solar Cells Doped with Germanium Phthalocyanine or Germanium Naphthalocyanine

  AUTHORS: Kazumi Yoshida, Takeo Oku, Atsushi Suzuki, Tsuyoshi Akiyama, Yasuhiro Yamasaki

  KEYWORDS: Organic Solar Cell; Inverted Structure; Phthalocyanine; Germanium; P3HT; PCBM

  JOURNAL NAME: Materials Sciences and Applications, Vol.4 No.4A, April 24, 2013

  ABSTRACT: [6,6]-phenyl C61-butyric acid methyl ester: poly (3-hexylthiophene) bulk heterojunction solar cells doped with germanium phthalocyanine or germanium naphthalocyanine were fabricated and characterized. Photovoltaic properties of the solar cells with inverted structures were investigated by optical absorption, current density-voltage characteristic and incident photon to current conversion efficiency. These germanium phthalocyanine and germanium naphthalocyanine blended as the third component absorbed light with wavelength longer than 700 nm. Morphology of solar cells was investigated by atomic force microscopy, and energy levels of the solar cells were discussed for power conversion efficiency.