Enhanced-Light-Harvesting Amphiphilic Ruthenium Dye for Efficient Solid-State Dye-Sensitized Solar Cells

被引：67

作者：

Wang, Mingkui ^{[1
]}

Moon, Soo-Jin ^{[1
]}

Zhou, Difei ^{[2
]}

Le Formal, Florian ^{[1
]}

Cevey-Ha, Ngoc-Le ^{[1
]}

Humphry-Baker, Robin ^{[1
]}

Graetzel, Carole ^{[1
]}

Wang, Peng ^{[2
]}

Zakeeruddin, Shaik M. ^{[1
]}

Graetzel, Michael ^{[1
]}

机构：

[1] Swiss Fed Inst Technol, Inst Chem Sci & Engn, Lab Photon & Interfaces, CH-1015 Lausanne, Switzerland

[2] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China

来源：

ADVANCED FUNCTIONAL MATERIALS | 2010年 / 20卷 / 11期

基金：

瑞士国家科学基金会;

关键词：

ELECTRON-TRANSPORT; CHARGE RECOMBINATION; PERFORMANCE; FILM; CONVERSION; DIFFUSION; ABSORPTIVITY;

D O I：

10.1002/adfm.200902396

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A ruthenium sensitizer (coded C101, NaRu (4,4'-bis(5-hexylthiophen-2-yl)-2,2'-bipyridine) (4-carboxylic acid-4'-caboxylate-2,2'-bipyridine) (NCS)(2)) containing a hexylthiophene-conjugated bipyridyl group as an ancillary ligand is presented for use in solid-state dye-sensitized solar cells (SSDSCs). The high molar. extinction coefficient of this dye is advantageous compared to the widely used Z907 dye, (NaRu (4-carboxylic acid-4'-carboxylate) (4,4'-dinonyl-2,2'-bipyridine) (NCS)(2)). In combination with an organic hole-transporting material (spiro-MeOTAD, 2,2',7,7'-tetrakis-(N,N-di-p-methoxyphenylamine) 9, 9'-spirobifluorene), the C101 sensitizer exhibits an excellent power-conversion efficiency of 4.5% under AM 1.5 solar (100 mW cm(-2)) irradiation in a SSDSC. From electronic-absorption, transient-photovoltage-decay, and impedance measurements it is inferred that extending the pi-conjugation of spectator ligands induces an enhanced light harvesting and retards the charge recombination, thus favoring the photovoltaic performance of a SSDSC.,

引用

页码：1821 / 1826

页数：6

共 47 条

[1] Electron-rich heteroaromatic conjugated bipyridine based ruthenium sensitizer for efficient dye-sensitized solar cells [J].