High-Performance Near-Infrared Absorbing n-Type Porphyrin Acceptor for Organic Solar Cells

Wisnu Tantyo Hadmojo, Un Hak Lee, Dajeong Yim, Hyun Woo Kim, Woo Dong Jang, Sung Cheol Yoon*, In Hwan Jung, Sung Yeon Jang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

36 Scopus citations


While the outstanding charge transport and sunlight-harvesting properties of porphyrin molecules are highly attractive as active materials for organic photovoltaic (OPV) devices, the development of n-type porphyrin-based electron acceptors has been challenging. In this work, we developed a high-performance porphyrin-based electron acceptor for OPVs by substitution of four naphthalene diimide (NDI) units at the perimeter of a Zn-porphyrin (P Zn ) core using ethyne linkage. Effective π-conjugation between four NDI wings and the P Zn core significantly broadened Q-band absorption to the near infrared region, thereby achieving the narrow band gap of 1.33 eV. Employing a windmill-structured tetra-NDI substituted P Zn -based acceptor (P Zn -TNDI) and mid-band gap polymer donor (PTB7-Th), the bulk heterojunction OPV devices achieved a power conversion efficiency (PCE) of 8.15% with an energy loss of 0.61 eV. The PCE of our P Zn -TNDI-based device was the highest among the reported OPVs using porphyrin-based acceptors. Notably, the amorphous characteristic of P Zn -TNDI enabled optimization of the device performance without using any additive, which should make industrial fabrication simpler and cheaper.

Original languageEnglish (US)
Pages (from-to)41344-41349
Number of pages6
JournalACS Applied Materials and Interfaces
Issue number48
StatePublished - Dec 5 2018

Bibliographical note

Funding Information:
This study was supported from the National Research Foundation (NRF) of Korea (MSIP, no. 2016R1A5A1012966 and no. 2017R1A2B2009178), Korea Institute of Energy Technology Evaluation and Planning (KETEP) (no. 20163030013960), and the Global Scholarship Program for Foreign Graduate Students at Kookmin University in Korea.

Publisher Copyright:
© 2018 American Chemical Society.


  • n-type porphyrins
  • near-infrared absorption
  • nonfullerene acceptors
  • organic photovoltaics
  • porphyrins

ASJC Scopus subject areas

  • Materials Science(all)


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