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  • Chen, ShangshangHong Kong Univ Sci and Technol, Peoples R China; Hong Kong Univ Sci and Technol, Peoples R China (författare)

Efficient Nonfullerene Organic Solar Cells with Small Driving Forces for Both Hole and Electron Transfer

  • Artikel/kapitelEngelska2018

Förlag, utgivningsår, omfång ...

  • 2018-10-01
  • WILEY-V C H VERLAG GMBH,2018
  • electronicrdacarrier

Nummerbeteckningar

  • LIBRIS-ID:oai:DiVA.org:liu-153181
  • https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-153181URI
  • https://doi.org/10.1002/adma.201804215DOI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

Ingår i deldatabas

Klassifikation

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

Anmärkningar

  • Funding Agencies|National Basic Research Program of China (973 Program) [2013CB834701, 2014CB643501]; Shenzhen Technology and Innovation Commission [JCYJ20170413173814007, JCYJ20170818113905024]; Hong Kong Research Grants Council [T23-407/13 N, N_HKUST623/13, 16305915, 16322416, 606012, 16306117, 16303917]; HK JEBN Limited, HKUST presidents office [FP201]; National Science Foundation of China [21374090]; Swedish Energy Agency Energimyndigheten [2016-010174]; Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoping University [2009-00971]; Hong Kong Innovation and Technology Commission [ITC-CNERC14SC01, ITS/083/15]
  • State-of-the-art organic solar cells (OSCs) typically suffer from large voltage loss (V-loss) compared to their inorganic and perovskite counterparts. There are some successful attempts to reduce the V-loss by decreasing the energy offsets between the donor and acceptor materials, and the OSC community has demonstrated efficient systems with either small highest occupied molecular orbital (HOMO) offset or negligible lowest unoccupied molecular orbital (LUMO) offset between donors and acceptors. However, efficient OSCs based on a donor/acceptor system with both small HOMO and LUMO offsets have not been demonstrated simultaneously. In this work, an efficient nonfullerene OSC is reported based on a donor polymer named PffBT2T-TT and a small-molecular acceptor (O-IDTBR), which have identical bandgaps and close energy levels. The Fourier-transform photocurrent spectroscopy external quantum efficiency (FTPS-EQE) spectrum of the blend overlaps with those of neat PffBT2T-TT and O-IDTBR, indicating the small driving forces for both hole and electron transfer. Meanwhile, the OSCs exhibit a high electroluminescence quantum efficiency (EQE(EL)) of approximate to 1 x 10(-4), which leads to a significantly minimized nonradiative V-loss of 0.24 V. Despite the small driving forces and a low V-loss, a maximum EQE of 67% and a high power conversion efficiency of 10.4% can still be achieved.

Ämnesord och genrebeteckningar

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

  • Wang, YumingLinköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten(Swepub:liu)yumwa29 (författare)
  • Zhang, LinXi An Jiao Tong Univ, Peoples R China (författare)
  • Zhao, JingboHong Kong Univ Sci and Technol, Peoples R China (författare)
  • Chen, YuzhongHong Kong Univ Sci and Technol, Peoples R China (författare)
  • Zhu, DanleiChinese Acad Sci, Peoples R China (författare)
  • Yao, HuatongHong Kong Univ Sci and Technol, Peoples R China (författare)
  • Zhang, GuangyeHong Kong Univ Sci and Technol, Peoples R China (författare)
  • Ma, WeiXi An Jiao Tong Univ, Peoples R China (författare)
  • Friend, Richard H.Cavendish Lab, England (författare)
  • Chow, Philip C. Y.Hong Kong Univ Sci and Technol, Peoples R China; HKUST Shenzhen Res Inst, Peoples R China (författare)
  • Gao, FengLinköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten(Swepub:liu)fenga88 (författare)
  • Yan, HeHong Kong Univ Sci and Technol, Peoples R China; HKUST Shenzhen Res Inst, Peoples R China (författare)
  • Hong Kong Univ Sci and Technol, Peoples R China; Hong Kong Univ Sci and Technol, Peoples R ChinaBiomolekylär och Organisk Elektronik (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:Advanced Materials: WILEY-V C H VERLAG GMBH30:450935-96481521-4095

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