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WFRF:(Li Shanshan)
 

Search: WFRF:(Li Shanshan) > Tuning the electron...

  • Zhu, CanCent South Univ, Peoples R China (author)

Tuning the electron-deficient core of a non-fullerene acceptor to achieve over 17% efficiency in a single-junction organic solar cell

  • Article/chapterEnglish2020

Publisher, publication year, extent ...

  • 2020
  • ROYAL SOC CHEMISTRY,2020
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:liu-168865
  • https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-168865URI
  • https://doi.org/10.1039/d0ee00862aDOI

Supplementary language notes

  • Language:English
  • Summary in:English

Part of subdatabase

Classification

  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • Y. Zou acknowledges the National Natural Science Foundation of China (NSFC) (21875286), National Key Research & Development Projects of China (2017YFA0206600), and Science Fund for Distinguished Young Scholars of Hunan Province (2017JJ1029). Y. Li is thankful the financial support from NSFC (91633301).
  • Finding effective molecular design strategies to enable efficient charge generation and small energy loss is among the long-standing challenges in developing high performance non-fullerene organic solar cells (OSCs). Recently, we reported Y-series non-fullerene acceptors with an electron-deficient-core-based fused structure (typically Y6), opening a new door to achieve high external quantum efficiency (∼80%) while maintaining low energy loss (∼0.57 eV). On this basis, further reducing the energy losses and ultimately improving the performance of OSCs has become a research hotspot. In this paper, we design and synthesize a new member of the Y-series acceptor family, Y18, which adopts a fused benzotriazole segment with unique luminescence properties as its electron-deficient core. Compared to Y6, the benzotriazole-based acceptor Y18 exhibits extended optical absorption and higher voltage. Consequently, the device delivers a promising power conversion efficiency of 16.52% with a very low energy loss of 0.53 eV. Further device optimization by exploiting a ternary blend strategy allowed us to achieve a high efficiency of 17.11% (certified as 16.76% by NREL). Y18 may become one of the most important candidate materials for its broader absorption spectra and higher voltage of Y18 (compared to Y6) in the OSCs field.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Yuan, JunCent South Univ, Peoples R China (author)
  • Cai, FangfangCent South Univ, Peoples R China (author)
  • Meng, LeiChinese Acad Sci, Peoples R China (author)
  • Zhang, HuotianLinköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten(Swepub:liu)huozh22 (author)
  • Chen, HonggangCent South Univ, Peoples R China (author)
  • Li, JingCent South Univ, Peoples R China (author)
  • Qiu, BeibeiChinese Acad Sci, Peoples R China (author)
  • Peng, HongjianCent South Univ, Peoples R China (author)
  • Chen, ShanshanUlsan Natl Inst Sci & Technol UNIST, South Korea; Chongqing Univ, Peoples R China (author)
  • Hu, YunbinCent South Univ, Peoples R China (author)
  • Yang, ChangdukUlsan Natl Inst Sci & Technol UNIST, South Korea (author)
  • Gao, FengLinköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten(Swepub:liu)fenga88 (author)
  • Zou, YingpingCent South Univ, Peoples R China (author)
  • Li, YongfangChinese Acad Sci, Peoples R China (author)
  • Cent South Univ, Peoples R ChinaChinese Acad Sci, Peoples R China (creator_code:org_t)

Related titles

  • In:Energy & Environmental Science: ROYAL SOC CHEMISTRY13:8, s. 2459-24661754-56921754-5706

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