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Enhancing intermole...
Enhancing intermolecular packing and light harvesting through asymmetric non-fullerene acceptors for achieving 18.7% efficiency ternary organic solar cells
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- Zhang, Zhiliang (författare)
- Soochow Univ, Peoples R China
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- Wu, Jingnan (författare)
- Soochow Univ, Peoples R China; Aalborg Univ, Denmark
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- Lin, Ji (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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- Lv, Junfang (författare)
- Soochow Univ, Peoples R China
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- Yu, Linfeng (författare)
- Soochow Univ, Peoples R China
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- Guo, Xia (författare)
- Shandong Univ, Peoples R China
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- Zhang, Maojie (författare)
- Soochow Univ, Peoples R China; Shandong Univ, Peoples R China
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(creator_code:org_t)
- ROYAL SOC CHEMISTRY, 2023
- 2023
- Engelska.
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Ingår i: Journal of Materials Chemistry A. - : ROYAL SOC CHEMISTRY. - 2050-7488 .- 2050-7496. ; 11:28, s. 15553-15560
- 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
- In recent years, the ternary strategy has been proven to be an effective way to improve the performance of organic solar cells (OSCs). Herein, an asymmetric medium-band gap non-fullerene acceptor (AFIC) is synthesized and added as the third component into the PM6:BTP-eC9 binary blend for a highly efficient ternary OSC. AFIC exhibits a well-complementary absorption spectrum with the host binary blend, which benefits light harvesting of the active layer. Furthermore, AFIC shows a large dipole moment and good miscibility with BTP-eC9, which facilitates the formation of a stable well-mixed phase and enhances molecular packing in the blend, leading to improved charge transport and suppressed charge recombination in ternary devices. As a result, the ternary OSC based on PM6:BTP-eC9:AFIC demonstrates a significantly improved power conversion efficiency (PCE) of 18.7% while the binary OSC based on PM6:BTP-eC9 shows a PCE of 17.5%, which is attributed to the synergistic enhancement of the open-circuit voltage (V-oc), short-circuit current density (J(sc)), and fill factor (FF).
Ämnesord
- NATURVETENSKAP -- Kemi -- Annan kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Other Chemistry Topics (hsv//eng)
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