一种新型钌敏化剂的工程设计及其在染料敏化太阳能电池中将太阳光转化为电能的应用。

Engineering of a novel ruthenium sensitizer and its application in dye-sensitized solar cells for conversion of sunlight into electricity.

作者信息

Klein C, Nazeeruddin Md K, Liska P, Di Censo Davide, Hirata N, Palomares E, Durrant J R, Grätzel M

机构信息

Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, School of Basic Sciences, Swiss Federal Institute of Technology, CH-1015 Lausanne, Switzerland.

出版信息

Inorg Chem. 2005 Jan 24;44(2):178-80. doi: 10.1021/ic048810p.

DOI:10.1021/ic048810p

PMID:15651860

Abstract

A novel ligand 4,4'-bis(carboxyvinyl)-2,2'-bipyridine (L) and its ruthenium(II) complex [Ru(II)L(2)(NCS)(2)] (K8) were synthesized and characterized by analytical, spectroscopic, and electrochemical techniques. The performance of the K8 complex as a charge transfer photosensitizer in nanocrystalline TiO(2) based solar cells was studied. When the K8 complex anchored onto a nanocrystalline TiO(2) film, we achieved very efficient sensitization yielding 77 +/-5% incident photon-to-current efficiencies (IPCE) in the visible region using an electrolyte consisting of 0.6 M methyl-N-butyl imidiazolium iodide, 0.05 M iodine, 0.05 M LiI, and 0.5 M 4-tert-butylpyridine in a 50/50 (v/v) mixture of valeronitrile and acetonitrile. Under standard AM 1.5 sunlight, the complex K8 gave a short circuit photocurrent density of 18 +/- 0.5 mA/cm(2), and the open circuit voltage was 640 +/- 50 mV with fill factor of 0.75 +/- 0.05, corresponding to an overall conversion efficiency of 8.64 +/- 0.5%.

摘要

合成了一种新型配体4,4'-双（羧基乙烯基）-2,2'-联吡啶（L）及其钌（II）配合物[Ru（II）L(2)(NCS)(2)]（K8），并通过分析、光谱和电化学技术对其进行了表征。研究了K8配合物作为基于纳米晶TiO(2)的太阳能电池中电荷转移光敏剂的性能。当K8配合物锚定在纳米晶TiO(2)薄膜上时，使用由0.6 M甲基-N-丁基咪唑碘化物、0.05 M碘、0.05 M LiI和0.5 M 4-叔丁基吡啶组成的电解质，在50/50（v/v）戊腈和乙腈混合物中，我们在可见光区域实现了非常高效的敏化，产生了77±5%的入射光子到电流效率（IPCE）。在标准AM 1.5太阳光下，配合物K8的短路光电流密度为18±0.5 mA/cm(2)，开路电压为640±50 mV，填充因子为0.75±0.05，对应于8.64±0.5%的总转换效率。