A Ru-complex for solar cell

作者：Wang Yan Rong^*; Xu Shen Gang; Zhu Hui E; He Zhi Qun; Cao Shao Kui

来源：Journal of Functional Materials, 2011, 42(SUPPL. JUNE): 514-517.

• Dye-sensitize
• Element analysis
• Highest occupied molecular orbital
• ITO (indium-tin oxide)
• Lowest unoccupied molecular orbital
• Mass ratio
• Modification layers
• PEDOT:PSS
• Photovoltaic
• Photovoltaic applications
• Photovoltaic devices
• Power conversion efficiencies
• Rectifying behaviors
• Ru-complex
• Through current

To obtain a photosensitizer for photovoltaic application, a Ru-complex (Ru-[bpy(COOEt)2]2Cl2), was synthesized and characterized by 1HNMR, MS, FT-IR, UV-Vis and element analysis. Ru-[bpy (COOEt)2]2Cl2 in DMF exhibited strong absorptions in the region of 350-800 nm and its energy levels for the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) levels were estimated from cyclic voltammetry as -5.07 and -3.16 eV, respectively. TG indicated that Ru-[bpy (COOEt)2]2Cl2 has good themal stability under 300°C. A photovoltaic device was prepared by spin-coating thin films from a solution containing Ru-[bpy(COOEt)2]2Cl2, PCBM and PVK(1:1:1) (mass ratio) on an ITO (indium-tin oxide) glass using aluminum as a top electrode. Photovoltaic behavior of the device was investigated under a 55 mW/cm2 white arc lamp illumination showed a typical rectifying behavior as observed through current density-voltage (J-V) characteristic measurement. The Voc, Isc and power conversion efficiency could be improved by inserting a modification layer of PEDOT:PSS.

• 出版日期2011
• 单位郑州大学