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Enhanced Photoelectric Conversion of Dye-sensitized Solar Cell by Addition of Inorganic Particles
Bing Li, Ping Cheng, Chang-sheng Deng*
Author NameAffiliationE-mail
Bing Li ?State Key Lab of New Ceramics and Fine Processing, Institute of Nuclear and New Energy Technology, Energy Science Building, Tsinghua University, Beijing 100084, China  
Ping Cheng ?State Key Lab of New Ceramics and Fine Processing, Institute of Nuclear and New Energy Technology, Energy Science Building, Tsinghua University, Beijing 100084, China  
Chang-sheng Deng* ?State Key Lab of New Ceramics and Fine Processing, Institute of Nuclear and New Energy Technology, Energy Science Building, Tsinghua University, Beijing 100084, China changsheng@mail.tsinghua.edu.cn 
Abstract:
"Electrochemical impedance spectroscopy and cyclic voltammetry were used to investigate the effect of various inorganic particles, including titania, alumina, zirconia with particle sizes ranging from nano- to micro-meter on electrochemical properties of the electrolyte used in dye-sensitized solar cell. 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 facilitate the diffusion of the I3- 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 efficiencyof 5.5% for the DSC (1 cm2) with P25 (10%) under 100 mW/cm2 at room temperature was achieved, an improvement of 51% over that without the oxide additive."
Key words:  Dye-sensitized solar cell, Electrolyte, Oxide particles additive
FundProject:
电解质中添加氧化物颗粒对染料敏化太阳电池性能的增强
李冰,程萍,邓长生*
摘要:
"在液态电解质中加入纳米TiO2、微米TiO2、Al2O3和ZrO2颗粒后,在一定的氧化物含量下,都不同程度地提高了DSC的光电特性,而以加入12.5%的纳米TiO2 (P25)得到最高的提高,达到5.5%,比没有加入氧化物颗粒的DSC效率提高达到51%以上.利用电化学阻抗谱和循环伏安法研究了在染料敏化太阳电池液态电解质中加入各种氧化物颗粒对电池电解质特性的影响,结果发现,加入氧化物颗粒后,由于界面效应,提供了I3-的快速扩散通道,从而I3-扩散系数得到较大提高,电解质/Pt电极间的电荷传输电阻下降,改善
关键词:  染料敏化太阳电池,电解质,氧化物颗粒增强
DOI:10.1088/1674-0068/20/06/816-820
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