title: Synthesis and Characterization of Phenothiazine-Based Platinum(II)-Acetylide Photosensitizers for Efficient Dye-Sensitized Solar Cells.
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.
authors.affiliation: 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.
authors.forename: Chi-Ho
authors.initials: CH
authors.lastname: Siu
authors.affiliation: Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong, P. R. China.
authors.forename: Lawrence Tien Lin
authors.initials: LT
authors.lastname: Lee
authors.affiliation: 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.
authors.forename: Sze-Chun
authors.initials: SC
authors.lastname: Yiu
authors.affiliation: 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.
authors.forename: Po-Yu
authors.initials: PY
authors.lastname: Ho
authors.affiliation: State Key Laboratory of Molecular Reaction, Dynamics Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116012, P. R. China.
authors.forename: Panwang
authors.initials: P
authors.lastname: Zhou
authors.affiliation: 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.|HKBU Institute of Research and Continuing Education, Shenzhen, Virtual University Park, Shenzhen, 518057, P. R. China. clamho@hkbu.edu.hk.
authors.forename: Cheuk-Lam
authors.identifier: http://orcid.org/0000-0001-8596-0307
authors.initials: CL
authors.lastname: Ho
authors.affiliation: Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong, P. R. China. taochen@phy.cuhk.edu.hk.|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.
authors.forename: Tao
authors.initials: T
authors.lastname: Chen
authors.affiliation: State Key Laboratory of Molecular Reaction, Dynamics Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116012, P. R. China.
authors.forename: Jianyong
authors.initials: J
authors.lastname: Liu
authors.affiliation: 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.
authors.forename: Keli
authors.initials: K
authors.lastname: Han
authors.affiliation: 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.|HKBU Institute of Research and Continuing Education, Shenzhen, Virtual University Park, Shenzhen, 518057, P. R. China. rwywong@hkbu.edu.hk.
authors.forename: Wai-Yeung
authors.initials: WY
authors.lastname: Wong
keywords: acetylide; dye-sensitized solar cells; phenothiazine; photosensitizers; platinum