Panchromatic Ternary Organic Solar Cells with Porphyrin Dimers and Absorption-Complementary Benzodithiophene-based Small Molecules

Venkatesh Piradi, Xiaopeng Xu, Zaiyu Wang, Jazib Ali, Qiang Peng*, Feng Liu, Xunjin ZHU

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)

Abstract

Diketopyrrolopyrrole-ethynylene-bridged porphyrin dimers are capped with electron-deficient 3-ethylrhodanine (A 2 ) via a π-bridge of phenylene ethynylene, affording two new acceptor-donor-acceptor structural porphyrin dimers (DPP-2TTP and DPP-2TP) with strong absorption in ranges of 400-550 nm (Soret bands) and 700-900 nm (Q bands). Their intrinsic absorption deficiency between the Soret and Q bands could be perfectly compensated by a wide-bandgap small molecule DR3TBDTTF (D∗) with absorption at 500-700 nm. Impressively, the optimal ternary device based on the blend films of DPP-2TPP, DR3TBDTTF (20 wt %), and PC 71 BM shows a PCE of 11.15%, whereas the binary devices based on DPP-2TTP/PC 71 BM and DPP-2TP/PC 71 BM blend films exhibit PCEs of 9.30 and 8.23%, respectively. The high compatibility of the low bandgap porphyrin dimers with the wide-bandgap small molecule provides a new threesome with PC 71 BM for highly efficient panchromatic ternary organic solar cells.

Original languageEnglish
Pages (from-to)6283–6291
Number of pages9
JournalACS applied materials & interfaces
Volume11
Issue number6
Early online date18 Jan 2019
DOIs
Publication statusPublished - 13 Feb 2019

Scopus Subject Areas

  • Materials Science(all)

User-Defined Keywords

  • absorption complementary
  • diketopyrrolopyrrole
  • panchromatic
  • porphyrin dimers
  • ternary organic solar cells

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