@article{649dc8f0a004489ca7e1a51c6ab4299e,
title = "Optimizing the photovoltaic performance of thiocyanate-free ruthenium photosensitizers by structural modification of C^N cyclometalating ligand in dye-sensitized solar cells",
abstract = "Five new thiocyanate-free ruthenium(II) complexes with different electron-donating functionalized cyclometalating ligands C^N were synthesized, characterized and applied as photosensitizers in dye-sensitized solar cells (DSSCs). Their photophysical, electrochemical, thermal and photovoltaic properties have been investigated and density functional theory (DFT) calculations have been carried out on these dyes. These dyes exhibit good thermal stability with the onset decomposition temperature at 5% weight-loss (Td) of around 330 °C. The DSSC device using the Ru(II) dye with the 9-tolylcarbazole chromophore exhibited the highest power conversion efficiency (η) up to 3.39%, with a short-circuit photocurrent density (Jsc) of 8.06 mA cm-2, an open-circuit photovoltage (Voc) of 0.62 V and a high fill factor (ff) of 0.68 under illumination of an AM 1.5 solar cell simulator.",
keywords = "Dye-sensitized solar cells, Energy conversion, Photovoltaics, Ruthenium complexes, Synthesis",
author = "Siu, {Chi Ho} and Ho, {Cheuk Lam} and Jian He and Tao Chen and Poulomi Majumda and Jianzhang Zhao and Hua Li and Wong, {Wai Yeung}",
note = "Funding Information: C.-H. Siu and C.-L. Ho contributed equally to this work. We thank Hong Kong Baptist University (FRG2/12-13/083 and FRG1/12-13/046), Hong Kong Research Grants Council (HKBU203011) and Areas of Excellence Scheme, University Grants Committee of HKSAR, China (project No. AoE/P-03/08), the National Natural Science Foundation of China (project number 91222201), the National Basic Research Program of China (973 Program) (2013CB834702), the Science, Technology and Innovation Committee of Shenzhen Municipality (JCYJ20120829154440583) and Dalian University of Technology. H. Li thanks the 111 Project and Beijing Engineering Research Center of Food Environment and Public Health from Minzu University of China (No. B08044 and No. 10301-01404026 ) for financial support. The work was also supported by Partner State Key Laboratory of Environmental and Biological Analysis and Strategic Development Fund of HKBU. ",
year = "2014",
month = nov,
day = "4",
doi = "10.1016/j.poly.2014.04.059",
language = "English",
volume = "82",
pages = "71--79",
journal = "Polyhedron",
issn = "0277-5387",
publisher = "Elsevier Ltd.",
}
