160734-19-0Relevant academic research and scientific papers
Fused five-membered porphyrin for dye-sensitized solar cells
Hayashi, Shinya,Matsubara, Yusuke,Eu, Seunghun,Hayashi, Hironobu,Umeyama, Tomokazu,Matano, Yoshihiro,Imahori, Hiroshi
, p. 846 - 847 (2008)
Fused five-membered zinc porphyrin carboxylic acid has been synthesized to improve light-harvesting capability in the visible and near-infrared regions. The fused porphyrin-sensitized TiO2 cell exhibited the photocurrent generation extending ov
Effect of Li ions doping into p-type semiconductor NiO as a hole injection/transfer medium in the CO2 reduction sensitized/catalyzed by Zn-porphyrin/Re-complex upon visible light irradiation
Nakazato, Ryosuke,Kou, Yoki,Yamamoto, Daisuke,Shimada, Tetsuya,Ishida, Tamao,Takagi, Shinsuke,Munakata, Hirokazu,Kanamura, Kiyoshi,Tachibana, Hiroshi,Inoue, Haruo
, p. 269 - 285 (2021)
The molecular catalyst sensitized system (MCSS) composed of a sensitizer and a molecular catalyst co-adsorbed on semiconductor should be one of the promising candidates of an artificial photosynthetic system that enables CO2 fixation with water as the electron donor. Here, monocarboxyphenyltrimesitylporphyrinatezinc(II) as the sensitizer and Re(dicarboxybipyridine)(CO)3(CH3CN) as the catalyst co-adsorbed on p-type semiconductor, NiO, were adopted for the MCSS catalyzed photoreduction of CO2 into CO. NiO was prepared by sol/gel method, and Li ions were doped to promote the hole carrier mobility with the amount of [Li]/[Ni] = 0, 3, 6, 9%, respectively. The conductivity of NiO increased linearly with the doping amount of Li ions, while the photoreduction of CO2 in the MCSS was enhanced under the 3, 6% doping of Li ions but was retarded under the higher doping amount of 9%. The apparently contradicting enhancement and the retardation were both successfully explained by the promotive effect of Li ions doping on the hole carrier mobility within NiO to enhance both the charge separation from the radical ion pair and charge recombination with the free hole carrier within NiO.
The photosensitizer dye and pigment and dye-sensitized solar cell including a metal oxide semiconductor (by machine translation)
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Paragraph 0080; 0081; 0082, (2017/01/31)
PROBLEM TO BE SOLVED: To provide: a new green photosensitizing dye which has good photoelectric conversion efficiency; a metal oxide semiconductor electrode obtained by adsorbing the photosensitizing dye on an oxide semiconductor; and a dye-sensitized solar cell using the oxide semiconductor electrode.SOLUTION: This invention relates to: a photosensitizing dye for a solar cell, which has a specific porphyrin skeleton to which a Zn2+ ion is coordinated as a central metal; a metal oxide semiconductor electrode 2 obtained by adsorbing the photosensitizing dye on a metal oxide semiconductor; and a dye-sensitized solar cell containing the metal oxide semiconductor electrode, a transparent electrode 1, an electrolyte 3, and a counter electrode 4.
Tuning electron transfer rates via systematic shifts in the acceptor state density using size-selected ZnO colloids
Huss, Adam S.,Bierbaum, Andrew,Chitta, Raghu,Ceckanowicz, Darren J.,Mann, Kent R.,Gladfelter, Wayne L.,Blank, David A.
supporting information; experimental part, p. 13963 - 13965 (2010/12/18)
We report direct measurements of the influence of the available density of acceptor states on the rate of near-barrierless electron transfer between a dye sensitizer and an oxide semiconductor. The electron donor was the excited state of a zinc porphyrin, and the acceptors were a series of size-selected ZnO nanocrystals. The available density of states was tuned by controlling the relative position of the ZnO band edge using quantum confinement. The resulting change in the rate was consistent with a simple model of the state density as a function of energy above the ZnO band edge.
