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The role of the pi-...
The role of the pi-bridge length in the performance of diketopyrrolopyrrole-based organic dyes for dye-sensitized solar cells
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- Zang, Xu-Feng (författare)
- Huzhou Univ, Sch Sci, Huzhou 313000, Zhejiang, Peoples R China.
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- Cheng, Haoliang (författare)
- Uppsala universitet,Fysikalisk kemi,Uppsala Univ, Dept Chem, Phys Chem, Angstrom Lab, SE-75120 Uppsala, Sweden.
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- Chen, Min (författare)
- Huzhou Univ, Sch Sci, Huzhou 313000, Zhejiang, Peoples R China.
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- Zhang, Yingying (författare)
- Huzhou Univ, Sch Sci, Huzhou 313000, Zhejiang, Peoples R China.
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- Huang, Tao (författare)
- Huzhou Univ, Sch Sci, Huzhou 313000, Zhejiang, Peoples R China.
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- Xia, Hui-ling (författare)
- Huzhou Univ, Lab Management Dept, Huzhou 313000, Zhejiang, Peoples R China.
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Huzhou Univ, Sch Sci, Huzhou 313000, Zhejiang, Peoples R China Fysikalisk kemi (creator_code:org_t)
- Elsevier, 2021
- 2021
- Engelska.
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Ingår i: Synthetic metals. - : Elsevier. - 0379-6779 .- 1879-3290. ; 281
- Relaterad länk:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Three novel diketopyrrolopyrrole-based metal-free organic dyes (TPh, BPh and SPh) with different pi-bridge lengths were designed and synthesized for dye-sensitized solar cells (DSSCs). The phenyl units were employed as the additional pi-bridge for the three dyes, which located between the diketopyrrolopyrrole core and cyanoacrylic acid unit. Interestingly, it is the first time to report a diketopyrrolopyrmle-based dye with only one additional pi-bridge unit (SPh). The effects of pi-bridge length on photophysical, molecular planarity, energy level and photovoltaic properties of the dyes were systematically investigated. The results revealed that the prolongation of pi-bridge length by introducing an additional phenyl unit results in an extra torsion in the structural framework and reduces the molecule planarity, which has a negative impact on improving the light-harvesting ability, while it is beneficial in lowering the tendency of aggregation and enhancing the excited electron injection efficiency. Finally, with a moderate pi-bridge length (BPh), the best balance of overall performances is achieved, resulting in the highest power conversion efficiency (6.57%) without chenodeoxycholic acid.
Ämnesord
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Nyckelord
- Dye-sensitized solar cells
- Metal-free organic dye
- Diketopyrrolopyrrole
- Triphenylamine
- pi-bridge length
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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