peri-Fused polyaromatic molecular contacts for perovskite solar cells

Zhao K., Liu Q., Yao L., DEĞER C., Shen J., Zhang X., ...Daha Fazla

Nature, cilt.632, sa.8024, ss.301-306, 2024 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 632 Sayı: 8024
  • Basım Tarihi: 2024
  • Doi Numarası: 10.1038/s41586-024-07712-6
  • Dergi Adı: Nature
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, International Bibliography of Social Sciences, Aerospace Database, Agricultural & Environmental Science Database, Animal Behavior Abstracts, Applied Science & Technology Source, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), Art Source, Artic & Antarctic Regions, BIOSIS, CAB Abstracts, Chemical Abstracts Core, Communication Abstracts, EBSCO Education Source, Environment Index, Food Science & Technology Abstracts, Gender Studies Database, Geobase, INSPEC, MEDLINE, Metadex, MLA - Modern Language Association Database, Pollution Abstracts, Psycinfo, Public Affairs Index, Veterinary Science Database, zbMATH, DIALNET, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.301-306
  • Marmara Üniversitesi Adresli: Evet

Özet

Molecule-based selective contacts have become a crucial component to ensure high-efficiency inverted perovskite solar cells1–5. These molecules always consist of a conjugated core with heteroatom substitution to render the desirable carrier-transport capability6–9. So far, the design of successful conjugation cores has been limited to two N-substituted π-conjugated structures, carbazole and triphenylamine, with molecular optimization evolving around their derivatives2,5,10–12. However, further improvement of the device longevity has been hampered by the concomitant limitations of the molecular stability induced by such heteroatom-substituted structures13,14. A more robust molecular contact without sacrificing the electronic properties is in urgent demand, but remains a challenge. Here we report a peri-fused polyaromatic core structure without heteroatom substitution that yields superior carrier transport and selectivity over conventional heteroatom-substituted core structures. This core structure produced a relatively chemically inert and structurally rigid molecular contact, which considerably improved the performance of perovskite solar cells in terms of both efficiency and durability. The champion device showed an efficiency up to 26.1% with greatly improved longevity under different accelerated-ageing tests.