引用本文:
【打印本页】   【HTML】   【下载PDF全文】   View/Add Comment  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 1827次   下载 3 本文二维码信息
码上扫一扫!
分享到: 微信 更多
Effects of Metal Oxide Modifications on Photoelectrochemical Properties of Mesoporous TiO2 Nanoparticles Electrodes for Dye-Sensitized Solar Cells
Tian-you Peng*,Ke Fan,De Zhao,Li-juan Yu,Ren-jie Li*
Author NameAffiliationE-mail
Tian-you Peng* College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, China typeng@whu.edu.cn 
Ke Fan College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, China  
De Zhao College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, China  
Li-juan Yu College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, China  
Ren-jie Li* College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, China lirj@.wuh.edu.cn 
Abstract:
Mesoporous TiO2 (m-TiO2) nanoparticles were used to prepare the porous film electrodes for dye-sensitized solar cells, and a second metal oxide (MgO, ZnO, Al2O3, or NiO) modifi-cation was carried out by dipping the m-TiO2 electrode into their respective nitrate solution followed by annealing at 500 oC. Experimental results indicated that the above second metal oxide modifications on m-TiO2 electrode are shown in all cases to act as barrier layer for the interfacial charge transfer processes, but film electron transport and interfacial charge recombination characteristics under applied bias voltage were dependent significantly on the existing states and kinds of these second metal oxides. Those changes based on sec-ond metal oxide modifications showed good correlation with the current-voltage analyses of dye-sensitized solar cell, and all modifications were found to increase the open-circuit photo-voltage in various degrees, while the MgO, ZnO, and NiO modifications result in 23%, 13%, and 6% improvement in cell conversion efficiency, respectively. The above observations indi-cate that controlling the charge transport and recombination is very important to improve the photovoltaic performance of TiO2-based solar cell.
Key words:  Dye-sensitized solar cell, Metal oxide modification, Photoelectrochemical prop-erty, Mesoporous TiO2 nanoparticle
FundProject:
金属氧化物修饰对介孔纳米TiO2电极的染料敏化太阳能电池电化学性能的影响
彭天右*,范科,赵德,喻丽娟,李仁杰*
摘要:
将介孔TiO2纳米粒子(m-TiO2)多孔膜电极浸入相应的金属硝酸盐的500 oC热处理修饰金属氧化物(如Mg、ZnO、Al2O3或NiO).结果表明,金属氧化物修饰均可形成能垒对m-TiO2膜电极的界面电荷传输过程产生影响,但外加偏压下其膜内电子传输和界面电荷复合均明显依赖于修饰氧化物的种类及其存在形态. 金属氧化物修饰的膜电极在电子传输和界面复合方面的变化与DSSCs的电流-电压特性曲线的变化规律具有明显的相关性,可不同程度地提高电池的光电压,而MgO、ZnO和NiO修饰的电池效率分别提高了23%、13%和6%. 上述结果表明调控电池的本征参数可以改善TiO2-基DSSCs的性能.
关键词:  染料敏化太阳能电池,金属氧化物修饰,光电化学性能,介孔TiO2纳米粒子
DOI:10.1088/1674-0068/25/05/609-616
分类号: