Synthesis and Characterization of Phenothiazine-Based Platinum(II)-Acetylide Photosensitizers for Efficient Dye-Sensitized Solar Cells

Chi-Ho Siu; Lawrence Tien Lin Lee; Sze-Chun Yiu; Po-Yu Ho; Panwang Zhou; Cheuk-Lam Ho; Tao Chen; Jianyong Liu; Keli Han; Wai-Yeung Wong

doi:10.1002/chem.201503828

Synthesis and Characterization of Phenothiazine-Based Platinum(II)-Acetylide Photosensitizers for Efficient Dye-Sensitized Solar Cells

Chemistry. 2016 Mar 7;22(11):3750-7. doi: 10.1002/chem.201503828. Epub 2015 Dec 11.

Authors

Chi-Ho Siu¹, Lawrence Tien Lin Lee², Sze-Chun Yiu¹, Po-Yu Ho¹, Panwang Zhou³, Cheuk-Lam Ho^{4

5}, Tao Chen^{6

7}, Jianyong Liu³, Keli Han⁸, Wai-Yeung Wong^{9

10}

Affiliations

¹ Institute of Molecular Functional Materials, Department of Chemistry, Partner State Key Laboratory of Environmental and Biological Analysis and Institute of Advanced Materials, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong, P. R. China.
² Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong, P. R. China.
³ State Key Laboratory of Molecular Reaction, Dynamics Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116012, P. R. China.
⁴ Institute of Molecular Functional Materials, Department of Chemistry, Partner State Key Laboratory of Environmental and Biological Analysis and Institute of Advanced Materials, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong, P. R. China. clamho@hkbu.edu.hk.
⁵ HKBU Institute of Research and Continuing Education, Shenzhen, Virtual University Park, Shenzhen, 518057, P. R. China. clamho@hkbu.edu.hk.
⁶ Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong, P. R. China. taochen@phy.cuhk.edu.hk.
⁷ Department of Materials Science and Engineering, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, P. R. China. taochen@phy.cuhk.edu.hk.
⁸ State Key Laboratory of Molecular Reaction, Dynamics Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116012, P. R. China. klhan@dicp.ac.cn.
⁹ Institute of Molecular Functional Materials, Department of Chemistry, Partner State Key Laboratory of Environmental and Biological Analysis and Institute of Advanced Materials, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong, P. R. China. rwywong@hkbu.edu.hk.
¹⁰ HKBU Institute of Research and Continuing Education, Shenzhen, Virtual University Park, Shenzhen, 518057, P. R. China. rwywong@hkbu.edu.hk.

PMID: 26660631
DOI: 10.1002/chem.201503828

Abstract

Three new unsymmetrical phenothiazine-based platinum(II) bis(acetylide) complexes PT1-PT3 with different electron-donating arylacetylide ligands were synthesized and characterized. Their photophysical, electrochemical, and photovoltaic properties have been fully investigated and the density functional theory (DFT) calculations have been carried out. Under AM 1.5 irradiation (100 mW cm(-2)), the PT1-based dye-sensitized solar cell (DSSC) device exhibited an attractive power conversion efficiency (η) up to 5.78 %, with a short-circuit photocurrent density (J(sc)) of 10.98 mA cm(-2), an open-circuit photovoltage (V(oc)) of 0.738 V, and a fill factor (ff) of 0.713. These findings provide strong evidence that platinum-acetylide complexes have great potential as promising photosensitizers in DSSC applications.

Keywords: acetylide; dye-sensitized solar cells; phenothiazine; photosensitizers; platinum.

Publication types

Research Support, Non-U.S. Gov't