Blueshifting the Absorption of a Small -Molecule Donor and Using it as the Third Component to Achieve High-Efficiency Ternary Organic Solar Cells

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Qi, ZhenyuShenzhen Technol Univ, Peoples R China; Hong Kong Univ Sci & Technol, Peoples R China; Hong Kong Univ Sci & Technol, Peoples R China (författare)

Blueshifting the Absorption of a Small -Molecule Donor and Using it as the Third Component to Achieve High-Efficiency Ternary Organic Solar Cells

Artikel/kapitelEngelska2022

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2022-07
WILEY-V C H VERLAG GMBH,2022
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Nummerbeteckningar

LIBRIS-ID:oai:DiVA.org:liu-187476
https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-187476URI
https://doi.org/10.1002/solr.202200386DOI

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Språk:engelska
Sammanfattning på:engelska

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Ämneskategori:ref swepub-contenttype
Ämneskategori:art swepub-publicationtype

Anmärkningar

Funding Agencies|National Key Research and Development Program of China - MOST [2019YFA0705900]; Basic and Applied Research Major Program of Guangdong Province [2019B030302007]; National Natural Science Foundation of China (NSFC) [22075057]; Shen Zhen Technology and Innovation Commission through (Shenzhen Fundamental Research Program) [JCYJ20200109140801751]; Hong Kong Research Grants Council [C6023-19G, 16310019, 16310020, 16309221]; Hong Kong Innovation and Technology Commission [ITC-CNERC14SC01]; Foshan-HKUST Project [FSUST19-CAT0202]
Adding a small-molecule donor (SMD) to state-of-the-art nonfullerene organic solar cells (OSCs) is demonstrated as a useful strategy to construct ternary organic solar cells, as SMDs typically have high crystallinity and can tune charge transport properties of OSCs. However, the absorption of most SMDs overlaps with typical donor polymers (e.g., PM6), which is against the general guidelines of adopting materials with complementary absorption in ternary OSCs. Herein, the absorption of state-of-art SMDs (BTR-CI) by linking the beta position of the outer thiophene to the alpha position of the inner thiophene unit is intentionally blueshifted. The resulting molecule beta-S1 shows a maximum absorption peak at 505 nm in the film state, which exhibits wider bandgap and shows complementary absorption with the host system (PM6:Y6). The corresponding ternary OSCs with 20%wt beta-S1 show significantly enhanced efficiency from 16.2% to 17.1% due to the increased short-circuit current (J(sc)) and improved fill factor (FF). Herein, an effective strategy to design SMDs with both wider bandgaps and higher crystallinity for high-performance ternary OSCs is presented.

Ämnesord och genrebeteckningar

NATURVETENSKAP Kemi Annan kemi hsv//swe
NATURAL SCIENCES Chemical Sciences Other Chemistry Topics hsv//eng
blueshifted absorptions; small-molecule donors; ternary organic solar cells

Biuppslag (personer, institutioner, konferenser, titlar ...)

Yu, HanHong Kong Univ Sci & Technol, Peoples R China; Hong Kong Univ Sci & Technol, Peoples R China (författare)
Yu, Jianwei,1992-Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten(Swepub:liu)jiayu39 (författare)
Zhao, HengXi An Jiao Tong Univ, Peoples R China (författare)
Zhao, ChaoyueShenzhen Technol Univ, Peoples R China (författare)
Chen, LiHong Kong Univ Sci & Technol, Peoples R China; Hong Kong Univ Sci & Technol, Peoples R China (författare)
Li, ChaoHong Kong Univ Sci & Technol, Peoples R China; Hong Kong Univ Sci & Technol, Peoples R China (författare)
Ma, WeiXi An Jiao Tong Univ, Peoples R China (författare)
Gao, Feng,1981-Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten(Swepub:liu)fenga88 (författare)
Zhang, GuangyeShenzhen Technol Univ, Peoples R China (författare)
Yan, HeHong Kong Univ Sci & Technol, Peoples R China; Hong Kong Univ Sci & Technol, Peoples R China; eFlexPV Ltd, Peoples R China (författare)
Shenzhen Technol Univ, Peoples R China; Hong Kong Univ Sci & Technol, Peoples R China; Hong Kong Univ Sci & Technol, Peoples R ChinaHong Kong Univ Sci & Technol, Peoples R China; Hong Kong Univ Sci & Technol, Peoples R China (creator_code:org_t)

Sammanhörande titlar

Ingår i:Solar RRL: WILEY-V C H VERLAG GMBH6:92367-198X

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Av författaren/redakt...: Qi, Zhenyu; Yu, Han; Yu, Jianwei, 199 ...; Zhao, Heng; Zhao, Chaoyue; Chen, Li; visa fler...; Li, Chao; Ma, Wei; Gao, Feng, 1981-; Zhang, Guangye; Yan, He; visa färre...

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