Mitigating Buried-Interface Energy Losses through Multifunctional Ligands in n-i-p Perovskite/Silicon Tandem Solar Cells

Zhang S., Wang J., Kalasariya N., Dally P., DEĞER C., YAVUZ İ., ...Daha Fazla

ACS Energy Letters, cilt.9, sa.9, ss.4633-4644, 2024 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 9 Sayı: 9
  • Basım Tarihi: 2024
  • Doi Numarası: 10.1021/acsenergylett.4c01841
  • Dergi Adı: ACS Energy Letters
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, INSPEC
  • Sayfa Sayıları: ss.4633-4644
  • Marmara Üniversitesi Adresli: Evet

Özet

Fabricating efficient monolithic n-i-p perovskite/silicon tandem solar cells remains challenging, as evidenced by substantial recombination losses at the buried interface between the NbOx electron transport layer (ETL) and perovskite. Herein, we introduce a self-assembled fullerene (C60-SAM) interlayer at this interface, with a large monovalent organic cation incorporated. We find this enhances the surface conductivity of the ETL, mitigates interface recombination, and reduces the energetic mismatch with the overlying perovskite. At the device level, this results in efficient electron extraction and suppressed device hysteresis, substantiated by drift-diffusion simulations. The combination of these improvements led to hysteresis-free n-i-p perovskite/silicon tandem solar cells on textured silicon with an efficiency of 27% (over 1 cm2) and an open-circuit voltage reaching 1.9 V.