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- Title
Novel D-π-A dye sensitizers of polymeric metal complexes with phenylethyl or carbazole derivatives as donors for dye-sensitized solar cells: synthesis, characterization, and photovoltaic application.
- Authors
Hu, Jiaomei; Zhang, Wei; Xie, Qiufang; Peng, Dahai; Liu, Ye; Liao, Yanlong; Zhu, Chunxiao; Zhong, Chaofan
- Abstract
Four novel polymeric metal complexes containing D-π-A type structures were synthesized, characterized and applied as dye sensitizers in dye-sensitized solar cells (DSSCs). The alkoxy benzene or carbazole (CZ) derivative acts as an electron donor (D), C=C acts as π-bridge (π) and the 8-hydroxyquinoline derivative complex acts as electron acceptor. Bipyridine derivative was ancillary ligand as well as providing anchoring group. FT-IR, gel permeation chromatography, thermogravimetric analyses, differential scanning calorimetry, UV-Vis absorption spectroscopy, Elemental analysis, cyclic voltammetry, J-V curves and input photon to converted current efficiency plots were introduced to investigate the four dyes. These dyes exhibit good thermal stability with 5 % weight loss at temperatures (T) of around 300 °C. For the DSSCs devices using dyes with CZ derivatives as electron D ( P2, P4) exhibited higher power conversion efficiency (PCE) than that with alkoxy benzene ( P1, P3). The DSSC based on P4 exhibited the highest PCE value of 2.42 % ( J = 4.93 mA/cm, V = 0.73 V, FF = 67.2 %) under AM 1.5G solar irradiation. This indicates a new way to design dye sensitizers for DSSCs.
- Subjects
METAL complexes; DYE-sensitized solar cells; CARBAZOLE; CYCLIC voltammetry; BIPYRIDINE
- Publication
Journal of Materials Science: Materials in Electronics, 2014, Vol 25, Issue 11, p5144
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-014-2284-5