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Photovoltaics Based on Hybridization of Effective Dye‐Sensitized Titanium Oxide and Hole‐Conductive Polymer P3HT
Author(s) -
Jiang KeJian,
Manseki Kazuhiro,
Yu YouHai,
Masaki Naruhiko,
Suzuki Kazuharu,
Song Yanlin,
Yanagida Shozo
Publication year - 2009
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.200900283
Subject(s) - materials science , lithium (medication) , dye sensitized solar cell , ionic liquid , fabrication , photovoltaics , titanium oxide , chemical engineering , polymer , ionic bonding , amide , energy conversion efficiency , molecule , conductive polymer , titanium , electrical conductor , electrode , optoelectronics , organic chemistry , ion , chemistry , catalysis , photovoltaic system , composite material , alternative medicine , electrolyte , endocrinology , ecology , pathology , engineering , biology , metallurgy , medicine
Here, the fabrication of quasi‐solid‐state TiO 2 /dye/poly(3‐hexylthiophene) (P3HT) solar cells is reported, in which the dyes with oleophilic thienyl groups were employed and ionic liquid (IL), 1‐ethyl‐3‐methylimidazolium (EMIm) containing lithium bis(trifluromethanesulfone)amide (Li‐TFSI) and 4‐ tert ‐butylpyridine ( t ‐BP) are assembled with dyed TiO 2 surfaces. One of the devices gave a high conversion efficiency of up to 2.70% under 1 sun illumination. The excellent performance is ascribed to successful molecular self‐organization at interface of the dye molecules and P3HT, and to the efficient charge separation and diffusion acquired by introduction of the IL coupled with Li‐TFSI and t‐BP.