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Heterogeneous Nucle...
Heterogeneous Nucleating Agent for High-Boiling-Point Nonhalogenated Solvent-Processed Organic Solar Cells and Modules
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- Chen, Haiyang (författare)
- Soochow Univ, Peoples R China
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- Sun, Weiwei (författare)
- Soochow Univ, Peoples R China
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- Zhang, Rui (författare)
- Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten
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- Huang, Yuting (författare)
- Soochow Univ, Peoples R China
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- Zhang, Ben (författare)
- Soochow Univ, Peoples R China
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- Zeng, Guang (författare)
- Soochow Univ, Peoples R China
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- Ding, Junyuan (författare)
- Soochow Univ, Peoples R China
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- Chen, Weijie (författare)
- Soochow Univ, Peoples R China
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- Gao, Feng (författare)
- Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten
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- Li, Yaowen (författare)
- Soochow Univ, Peoples R China; Soochow Univ, Peoples R China; Soochow Univ, Peoples R China
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- Li, Yongfang (författare)
- Soochow Univ, Peoples R China; Soochow Univ, Peoples R China; Chinese Acad Sci, Peoples R China
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(creator_code:org_t)
- 2024
- 2024
- Engelska.
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Ingår i: Advanced Materials. - : WILEY-V C H VERLAG GMBH. - 0935-9648 .- 1521-4095.
- Relaterad länk:
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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
- High-boiling-point nonhalogenated solvents are superior solvents to produce large-area organic solar cells (OSCs) in industry because of their wide processing window and low toxicity; while, these solvents with slow evaporation kinetics will lead excessive aggregation of state-of-the-art small molecule acceptors (e.g. L8-BO), delivering serious efficiency losses. Here, a heterogeneous nucleating agent strategy is developed by grafting oligo (ethylene glycol) side-chains on L8-BO (BTO-BO). The formation energy of the obtained BTO-BO; while, changing from liquid in a solvent to a crystalline phase, is lower than that of L8-BO irrespective of the solvent type. When BTO-BO is added as the third component into the active layer (e.g. PM6:L8-BO), it easily assembles to form numerous seed crystals, which serve as nucleation sites to trigger heterogeneous nucleation and increase nucleation density of L8-BO through strong hydrogen bonding interactions even in high-boiling-point nonhalogenated solvents. Therefore, it can effectively suppress excessive aggregation during growth, achieving ideal phase-separation active layer with small domain sizes and high crystallinity. The resultant toluene-processed OSCs exhibit a record power conversion efficiency (PCE) of 19.42% (certificated 19.12%) with excellent operational stability. The strategy also has superior advantages in large-scale devices, showing a 15.03-cm2 module with a record PCE of 16.35% (certificated 15.97%). The heterogeneous nucleating agent (BTO-BO) is developed to suppress the excessive aggregation of L8-BO in high-boiling-point nonhalogenated solvents processing, achieving the active layer with high crystallinity and nano-scaled phase separation morphology. The resultant OSCs achieve record power conversion efficiencies of 19.42% (0.062-cm2) and 16.35% (15. 03-cm2) with excellent operational stabilities. image
Ämnesord
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Nyckelord
- high-boiling-point nonhalogenated solvent; large-area modules; nucleation and growth kinetics; organic solar cells; stability
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- art (ämneskategori)
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Chen, Haiyang
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Sun, Weiwei
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Zhang, Rui
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Huang, Yuting
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Zhang, Ben
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Zeng, Guang
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visa fler...
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Ding, Junyuan
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Chen, Weijie
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Gao, Feng
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Li, Yaowen
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Li, Yongfang
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