Presentation	2005/1/21 Improvement of Photovoltaic Properties in Solid Type Organic Solar Cells Prepared on TiO_2 coated electrodes Eiji ITOH, Yuji OHMORI, Takashi YOKOUCHI, Keiichi MIYAIRI,
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Abstract(in English)	We have investigated the photovoltaic properties of 2 sets of organic p-n heterojunction photovoltaic cells prepared on TiO_2 films consisting of either (I) ITO/ TiO_2/ MEH-PPV/(PEDOT-PSS)/ Au structures or (II) ITO/ TiO_2/ dye/ phthalocyanine/ Au structures. For device structures I, the short circuit current (J_) increases from less than 1mA/cm^2 to 4mA/cm^2 successfully by inserting the PEDOT-PSS buffer layer and nano-crystalline TiO_2 layers. For device II, we have used various dye materials, such as tetrapyridyl porphyrin (H_2TPyP), DCM, Coumarin6, perylene derivative (BP-PTCDI), and Buckminsterfullerene (C_<60>). The open circuit voltage (V_) of lined up in order of DCM>BP-PTCDI>H_2TPyP>C_<60> which corresponds to the order of the electron affinity. The largest short circuit current density was obtained for the ITO/ TiO_2/ C_<60>/ CuPc/ Au multilayered structure. Higher values of V_ and J_ of 0.49 V and 5.42 mA/cm^2, under 130 mW/cm^2 white light illumination, were obtained by substituting coevaporated layer of C_<60> and CuPc by C_<60> layer and by heating the substrate at 120℃ during the deposition.
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Keyword(in English)	Organic solar cell / Titanium oxide / Phthalocyanine / Conducting polymer / n type dye
Paper #	OME2004-120
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Committee	OME
Conference Date	2005/1/21(1days)
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Registration To	Organic Material Electronics (OME)
Language	JPN
Title (in Japanese)	(See Japanese page)
Sub Title (in Japanese)	(See Japanese page)
Title (in English)	Improvement of Photovoltaic Properties in Solid Type Organic Solar Cells Prepared on TiO_2 coated electrodes
Sub Title (in English)
Keyword(1)	Organic solar cell
Keyword(2)	Titanium oxide
Keyword(3)	Phthalocyanine
Keyword(4)	Conducting polymer
Keyword(5)	n type dye
1st Author's Name	Eiji ITOH
1st Author's Affiliation	Department of Electrical and Electronic Engineering, Faculty of Engineering, Shinshu University()
2nd Author's Name	Yuji OHMORI
2nd Author's Affiliation	Department of Electrical and Electronic Engineering, Faculty of Engineering, Shinshu University
3rd Author's Name	Takashi YOKOUCHI
3rd Author's Affiliation	Department of Electrical and Electronic Engineering, Faculty of Engineering, Shinshu University
4th Author's Name	Keiichi MIYAIRI
4th Author's Affiliation	Department of Electrical and Electronic Engineering, Faculty of Engineering, Shinshu University
Date	2005/1/21
Paper #	OME2004-120
Volume (vol)	vol.104
Number (no)	641
Page	pp.pp.-
#Pages	6
Date of Issue