Molecular engineering of panchromatic unsymmetrical squaraines for dye-sensitized solar cell applications

被引：66

作者：

Choi, Hyunbong ^{[1
]}

Kim, Jeum-Jong ^{[1
]}

Song, Kihyung ^{[2
]}

Ko, Jaejung ^{[1
]}

Nazeeruddin, Md. K. ^{[3
]}

Graetzel, Michael ^{[3
]}

机构：

[1] Korea Univ, Dept Adv Mat Chem, Jochiwon 339700, Chungnam, South Korea

[2] Korea Natl Univ Educ, Dept Chem, Cheongwon 363791, Chungbuk, South Korea

[3] Base Ecole Polytech Fed Lausanne, Fac Sci, LPI, Inst Sci & Ingenierie Chim, CH-1015 Lausanne, Switzerland

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2010年 / 20卷 / 16期

关键词：

NANOCRYSTALLINE TIO2 FILMS; BIS-DIMETHYLFLUORENYL AMINO; EFFICIENT FAR-RED; ORGANIC SENSITIZERS; ENERGY-TRANSFER; CONVERSION EFFICIENCY; ELECTRON-INJECTION; HIGHLY EFFICIENT; ALKYL CHAIN; PHOTOSENSITIZATION;

D O I：

10.1039/b926863d

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Three unsymmetrical squaraine dyes JK-64, JK-65, and JK-64Hx, containing a bulky spirobifluorene or hexyloxyphenyl unit are designed and synthesized. These sensitizers, when anchored onto a TiO(2) surface, exhibit decreased aggregation as well as enhanced unidirectional flow of electrons. Under standard global AM 1.5 solar conditions, an optimized JK-64Hx sensitized cell gave a short-circuit photocurrent density (J(sc)) of 12.82 mA cm(-2), an open-circuit voltage (V(oc)) of 0.54 V and a fill factor (ff) of 0.75, corresponding to an overall conversion efficiency (eta) of 5.20%.

引用

页码：3280 / 3286

页数：7

共 43 条

[1] Chemistry of squaraine-derived materials: Near-IR dyes, low band gap systems, and cation sensors [J].

Ajayaghosh, A .

ACCOUNTS OF CHEMICAL RESEARCH, 2005, 38 (06) :449-459

[2] Donor-acceptor type low band gap polymers: polysquaraines and related systems [J].

Ajayaghosh, A .

CHEMICAL SOCIETY REVIEWS, 2003, 32 (04) :181-191

[3] Dye sensitization of nanocrystalline TiO2:: enhanced efficiency of unsymmetrical versus symmetrical squaraine dyes [J].

Alex, S ;

Santhosh, U ;

Das, S .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2005, 172 (01) :63-71

[4]

[Anonymous], MOL SUPRAMOLECULAR P

[5] Femtosecond IR study of excited-state relaxation and electron-injection dynamics of Ru(dcbpy)2(NCS)2 in solution and on nanocrystalline TiO2 and Al2O3 thin films [J].

Asbury, JB ;

Ellingson, RJ ;

Ghosh, HN ;

Ferrere, S ;

Nozik, AJ ;

Lian, TQ .

JOURNAL OF PHYSICAL CHEMISTRY B, 1999, 103 (16) :3110-3119

[6] Voltammetric determination of the reversible redox potential for the oxidation of the highly surface active polypyridyl ruthenium photovoltaic sensitizer cis-Ru(II)(dcbpy)2(NCS)2 [J].

Bond, AM ;

Deacon, GB ;

Howitt, J ;

MacFarlane, DR ;

Spiccia, L ;

Wolfbauer, G .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1999, 146 (02) :648-656

[7] A novel blue dye for near-IR 'dye-sensitised' solar cell applications [J].

Burke, Anthony ;

Schmidt-Mende, Lukas ;

Ito, Seigo ;

Gratzel, Michael .

CHEMICAL COMMUNICATIONS, 2007, (03) :234-236

[8] Model for energy transfer in polymer/dye blends based on point-surface dipole interaction [J].

Cabanillas-Gonzalez, J ;

Fox, AM ;

Hill, J ;

Bradley, DDC .

CHEMISTRY OF MATERIALS, 2004, 16 (23) :4705-4710

[9] Stepwise Cosensitization of Nanocrystalline TiO2 Films Utilizing Al2O3 Layers in Dye-Sensitized Solar Cells [J].

Choi, Hyunbong ;

Kim, Sanghoon ;

Kang, Sang Ook ;

Ko, Jaejung ;

Kang, Moon-Sung ;

Clifford, John N. ;

Forneli, Amparo ;

Palomares, Emilio ;

Nazeeruddin, Mohammad K. ;

Graetzel, Michael .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2008, 47 (43) :8259-8263

[10] Highly efficient and thermally stable organic sensitizers for solvent-free dye-sensitized solar cells [J].

Choi, Hyunbong ;

Baik, Chul ;

Kang, Sang Ook ;

Ko, Jaejung ;

Kang, Moon-Sung ;

Nazeeruddin, Md. K. ;

Graetzel, Michael .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2008, 47 (02) :327-330

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