A new porphyrin bearing a pyridinylethynyl group as sensitizer for dye sensitized solar cells

被引：47

作者：

Daphnomili, Dimitra ^{[1
]}

Sharma, G. D. ^{[2
]}

Biswas, S. ^{[3
]}

Thomas, K. R. Justin ^{[4
]}

Coutsolelos, A. G. ^{[1
]}

机构：

[1] Univ Crete, Dept Chem, Lab Bioinorgan Chem, Iraklion 71003, Crete, Greece

[2] JEC Grp Coll, R&D Ctr Engn & Sci, Jaipur 303101, Rajasthan, India

[3] LNM Inst Technol, Dept Phys, Jaipur, Rajasthan, India

[4] Indian Inst Technol Roorkee, Dept Chem, Mat Organ Lab, Roorkee 247667, Uttar Pradesh, India

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2013年 / 253卷

关键词：

Extended pyridyl porphyrin; Dye sensitized solar cells; Modified photoanode; Power conversion efficiency; Electrochemical impedance spectra; SILVER NANOPARTICLES; CONVERSION EFFICIENCY; ORGANIC-DYES; IMPEDANCE; NANOCOMPOSITE; ELECTROLYTE; RECOMBINATION; PARTICLES; TRANSPORT; SPECTRA;

D O I：

10.1016/j.jphotochem.2012.12.013

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：

A novel porphyrin dye extended at one meso-position via an pyridinylethynyl group acting as anchoring group and three phenyl -COOMe groups was synthesized and used as sensitizer for the fabrication of dye sensitized solar cells (DSSCs). The overall power conversion efficiencies (PCE) of DSSCs based on this porphyrin dye as sensitizer with and without CDCA coadsorbant are 3.36% and 4.56%, respectively. To improve the PCE of DSSC, we have incorporated Ag nanoparticles into the nano-porous TiO2 photoanode i.e. FTO/TiO2/Ag-NPs and found a enhancement up to 5.66%. The improved photovoltaic performance of the DSSCs with modified photoanode is attributed to the (i) the increased light harvesting efficiency due to the plasmon enhanced optical absorption induced by Ag nanoparticles, (ii) reduced back recombination process at TiO2/dye/electrolyte interface, (iii) improved electron lifetime, and (iv) formation of Schottky barrier at TiO2/NPs-Ag. (c) 2012 Elsevier B.V. All rights reserved.

引用

页码：88 / 96

页数：9

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