Enhanced Device Efficiency and Long-Term Stability via Boronic Acid-Based Self-Assembled Monolayer Modification of Indium Tin Oxide in a Planar Perovskite Solar Cell

Akln Kara D., Kara K., Oylumluoglu G., Yigit M. Z., Can M., Kim J. J., ...Daha Fazla

ACS Applied Materials and Interfaces, cilt.10, sa.35, ss.30000-30007, 2018 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 10 Sayı: 35
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1021/acsami.8b10445
  • Dergi Adı: ACS Applied Materials and Interfaces
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.30000-30007
  • Anahtar Kelimeler: interface engineering, long-term stability, perovskite, SAM treatment, solar Cell, surface modification
  • Recep Tayyip Erdoğan Üniversitesi Adresli: Hayır

Özet

Interfacial engineering is essential for the development of highly efficient and stable solar cells through minimizing energetic losses at interfaces. Self-assembled monolayers (SAMs) have been shown as a handle to tune the work function (WF) of indium tin oxide (ITO), improving photovoltaic cell performance and device stability. In this study, we utilize a new class of boronic acid-based fluorine-terminated SAMs to modify ITO surfaces in planar perovskite solar cells. The SAM treatment demonstrates an increase of the WF of ITO, an enhancement of the short-circuit current, and a passivation of trap states at the ITO/[poly(3,4ethylenedioxylenethiophene):poly(styrenesulfonic acid)] interface. Device stability improves upon SAM modification, with efficiency decreasing only 20% after one month. Our work highlights a simple treatment route to achieve hysteresis-free, reproducible, stable, and highly efficient (16%) planar perovskite solar cells.