"Development of Novel Dye-Sensitized Solar Cell using Optimum Sensitizer Molecules"

“利用最佳敏化剂分子开发新型染料敏化太阳能电池”

• 批准号: 05558064
• 负责人: YANAGIDA Shozo
• 金额: $ 7.55万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-05558064/
• 关键词: Photoelectrochemical Solar Cell; Dye-sensitization; Surface Modification; Ruthenium Complex; Titanium Dioxide; Semiconductor Nanocrystallites; Solid Electrolyte; Molecular Assembly; 色素増感; 電子移動; 多孔質薄膜; ポリピロール; CdTe; ルテテニム錯体; 固定電解質; 太陽電池; 薄膜

(1) Nanocrystalline films of TiO_2 were successfully prepared. Preparation method was improved to obtained the nanocrystallites with well-defined crystal structure and particle size. The thin films with relatively high electric conductivity was also prepared from the nanocrystallites. The surface of the nanocrystalline films electrode was modified by electrodeposition of highly pure TiO_2 layr.(2) Construction of dye-sensitized TiO_2 solar cell is studied by using a ruthenium complex, cis-di (thiocyanato)-N,N'-bis (2,2'-bipyridyl-4,4'-dicarboxylic acid)-ruthenium (II), as a photosensitizing molecule (dye) on TiO_2 nanocrystallite films from the standpoint of knowing interfacial binding effect on photoenergy conversion efficiency. Photoconversion efficiency is improved by electrochemical treatment of TiO_2 films, or reflux treatment for effective anchoring of the photosensitizing molecules on TiO_2 nanocrystallite films.(3) Characteristics of interfacial binding between dye molecules an … More d TiO_2 surface is determined and compared by using IR and uv-vis spectra. The ester-like linkage and the chelating carboxylato linkage are formed between carboxylic acid groups of ligands in dye molecules and TiO_2 nanocrystallite. The ester-like linkage is observed as major on the film which shows relatively high photoenergy conversion efficiency. The improvement of cell properties such as open circuit cell voltage (V_<oc>) can be explained by decrease in charge on bipyridine ligands of the dye molecule due to the formation of the covalent-like linkage. Importance of binding states between photosensitizing molecules and TiO_2 discussed with a view to achieving high efficiency in dye-sensitized solar cell.(4) A solid-state dye sensitized solar cell was fabricated using a conducting polymer for a electrolyte solution. Electrochemical anodic polymerization of pyrrole was carried out with a dyeadsorbed high porous TiO_2 nanocrystalline film under visible light illumination in a acetonitrile solution containing 0.1M pyrrole and 0.1M LiClO4. Photocurrent due to dye sensitization on the TiO_2 nanocrystalline film was observed. Photoenergy conversion efficiency depended on amounts and doping density of polypyrrole on the TiO_2 nanocrystalline film. Poly (oligoethylen glycol methacrylate) doped with iodide ion was also used as solid electrolyte for solid electrolyte. Less

（1）成功准备了TiO_2的纳米晶膜。改进制备方法以获得具有明确定义的晶体结构和粒径的纳米晶膜。还通过高度纯TIO_2 Layr的电沉积来修改具有相对高电导率的薄膜。酸） - 正直（II），作为TIO_2纳米晶膜上膜上的光敏分子（染料），从了解界面结合效应对光效率转化效率的角度。通过电化学处理TIO_2膜的电化学处理，或在TIO_2纳米晶层膜上有效地锚定光感密度分子的反射处理。（3）使用IR和UVIS Spemptra比较，可以确定更多的DTIO_2表面和比较。类似酯的连杆和螯合羧基连接是在染料分子和TIO_2纳米晶体中的配体的羧酸基团之间形成的。在薄膜上观察到类似酯的连锁，显示出相对较高的光效率转化效率。由于形成了共价键的形成，可以通过在染料分子的双吡啶配体上的电荷减少来解释细胞性能（V_ <oc>）等细胞性能（V_ <oc>）。讨论的光敏分子和TIO_2之间结合状态的重要性是为了实现染料敏感的太阳能电池的高效率。（4）使用电解质溶液的导电聚合物制造了固态染料敏感的太阳能电池。在可见的乙腈溶液中，在含有0.1m吡咯和0.1m liclo4的乙腈溶液中，在可见光的光照射下使用染色的高孔TIO_2纳米晶膜进行吡咯的电化学阳极聚合。观察到TIO_2纳米晶膜上的染料传感化引起的光电流。光能转化效率取决于TIO_2纳米晶膜上多吡咯的量和掺杂密度。用碘化离子掺杂的聚（寡乙基乙二醇）也用作固体电解质的固体电解质。较少的

项目成果

Kei Murakoshi: "Importance of Binding States Between Photosensitizing Molecules and TiO_2 Surface for Efficiency in Dye-sensitized Solar Cell" J.Electroanal.Chem.(印刷中). (1995)

Kei Murakoshi：“光敏分子和 TiO_2 表面之间的结合状态对于染料敏化太阳能电池效率的重要性”J.Electroanal.Chem.（出版中）。

Kei Murakoshi ; Gentaro Kano ; Yuji Wada ; Shozo Yanagida ; Hiromitsu Miyazaki ; Masamitsu Matsumoto ; Sadao Murasawa: ""Importance of Binding States between Photosensitizing Molecules and TiO_2 Surface for Efficiency in Dye-sensitized Solar Cell"" J.Elec

村越圭;

Yuji Wada: "TiO_2-catalyzed exhaustive photooxidation of organic compounds in perfluorotributylamine" New J.Chem.(印刷中). (1994)

Yuji Wada：“全氟三丁胺中有机化合物的 TiO_2 催化彻底光氧化”New J.Chem.（出版中）。

M.Matsumoto ; H.Miyazaki ; K.Kumashiro ; Y.Takaoka: ""A Dye Sensitized TiO_2 Photoelectrochemical Cell Constructed with Polymer Solid Electrolyte"" Solid State lonics. (in press). (1996)

松本先生；

Kei Murakoshi et al.: "Importance of Binding States between Photosensitizing Molecules and TiO_2 Surface for Efficiency in Dye-sensitized Solar Cell" J.Electroanal.Chem.396. 27-34 (1995)

Kei Murakoshi 等人：“光敏分子和 TiO_2 表面之间的结合态对于染料敏化太阳能电池效率的重要性”J.Electroanal.Chem.396。