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

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