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RESEARCH PRODUCT
Trilateral π-conjugation extensions of phenothiazine-based dyes enhance the photovoltaic performance of the dye-sensitized solar cells
Zu-sheng HuangDai-bin KuangHerbert MeierLingyun WangZafar IqbalWu-qiang WuDerong Caosubject
PhotocurrentChemistrybusiness.industryProcess Chemistry and TechnologyGeneral Chemical EngineeringPhotovoltaic systemEnergy conversion efficiency02 engineering and technology010402 general chemistry021001 nanoscience & nanotechnologyRing (chemistry)Photochemistry01 natural sciences0104 chemical sciencesDye-sensitized solar cellchemistry.chemical_compoundPhenothiazineFuranThiopheneOptoelectronics0210 nano-technologybusinessdescription
Abstract Two novel organic dyes TLEP-1 and TLEP-2 based on phenothiazine with trilateral π-conjugation extensions were designed and synthesized for dye-sensitized solar cells, where phenothiazine ring was linked with two phenyl moieties at 7- and 10-positions as the first and second π-conjugation extensions, and with furan or thiophene ring at 3-position as the third π-conjugation extension for TLEP-1 and TLEP-2, respectively. The influence of the π-conjugation extensions on the photovoltaic performance was evaluated. The cell based on TLEP-2 exhibits an impressive short-circuit photocurrent density of 14.87 mA cm−2, which is much higher than the cell based on the reference dye without π-conjugation extension (9.01 mA cm−2), leading to high power conversion efficiency of 7.33% under simulated AM 1.5 G illumination condition. The results indicate that the trilateral π-conjugation extensions are an effective way to improve the photovoltaic performance of the dye-sensitized solar cells.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-01-01 | Dyes and Pigments |