Enhanced Photoelectric Conversion of Dye-sensitized Solar Cell (DSC) by Addition of Inorganic Particles
Electrochemical impedance spectroscopy and cyclic voltammetry were used to investigate the effect of adding various inorganic particles, including titania, alumina, zirconia with particle sizes ranging from nano- to micro-meter into the electrolyte. Adding inorganic particles could improve the ionic transport of I3 - in the electrolyte and reduce the electrolyte - electrode transfer resistance, leading to an improvement of the photoelectric conversion efficiency of the devices. It was proposed that the improvement could be attributed to the interfacial effect between the inorganic particles and the electrolyte; ionic conduction paths formed between the solid particles that facilitate the diffusion of the I3 - ions in the electrolyte and improve the connection between the electrolyte and the electrode. Combined with a less volatile solvent system and a proper amount of the inorganic particles as the additive, an overall efficiency of 5.5％ for the DSC (1 cm2) with P25 (10wt％) under 100 mW/cm2 at room temperature was achieved, an improvement of 51％ over that without the oxide additive.
dye-sensitized solar cell electrolyte oxide particles additives
李冰 程萍 邓长生
新型陶瓷与精细工艺国家重点实验室,清华大学和能与新能源技术研究院,清华大学能科楼302室,北京100084
国际会议
成都
英文
2007-11-19（万方平台首次上网日期，不代表论文的发表时间）