Effects of heterocycles containing different atoms as π-bridges on the performance of dye-sensitized solar cells

Literature Information

Publication Date 2015-05-21
DOI 10.1039/C5CP02194D
Impact Factor 3.676
Authors

Hailang Jia, Xuehai Ju, Mingdao Zhang, Zemin Ju, Hegen Zheng


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Abstract

Two new D–π–A zinc porphyrin dyes with thiophene and furan π-bridges have been synthesized and employed in dye-sensitized solar cells (DSSCs). Here, the triphenylamine (TPA) moiety was used as the electron donor, and the hexylthiophene chromophores were introduced onto the donor groups, which effectively extended the π-conjugation system. Although the two dyes had similar molecular structures, there was a significant difference between their optical and photoelectric properties. The EIS analysis suggested that the dye with the thiophene π-bridge had a lower charge recombination rate compared to the dye with the furan π-bridge. Based on their light-harvesting abilities, the power conversion efficiency (PCE) of dye JP-S was higher than that of dye JP-O. The JP-S-based DSSC showed a PCE of 5.84%, whereas the PCE of the JP-O-based DSSC was 4.68%. Moreover, using the dye TTR1 as a co-sensitizer made up for the poor absorption of porphyrin dyes in the 480–600 nm range and reduced the charge recombination. The JP-S + TTR1-based DSSCs showed a higher PCE of 6.71%, and the Jsc and Voc values of the device were both increased using this strategy.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
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Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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