Surface Passivation for Efficient Bifacial HTL-free Perovskite Solar Cells with SWCNT Top Electrodes

Aly Elakshar, Sergey Tsarev, Pramod Mulbagal Rajanna, Marina Tepliakova, Lyubov Frolova, Yuriy G. Gladush, Sergey M. Aldoshin, Pavel A. Troshin, Albert G. Nasibulin*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Building-integrated photovoltaics is an emerging field that demands approaches to deliver efficient and flexible photovoltaic cells at a low cost. In this work, high-quality single-walled carbon nanotube (SWCNT) films were utilized as an electrode for the hole-transport-layer (HTL)-free perovskite solar cells using a methodology compatible with scalable low-temperature roll-to-roll fabrication. We report a simple passivation strategy of the perovskite/SWCNT interface using methylammonium iodide, which dramatically enhances the performance of the cells, delivering power conversion efficiencies of up to 16.7%. We believe that the device configuration presented here will facilitate the development of a generation of bifacial perovskite solar cells for integrated photovoltaics and tandems.

Original languageEnglish
Number of pages6
JournalACS Applied Energy Materials
Early online date22 Nov 2021
DOIs
Publication statusE-pub ahead of print - 22 Nov 2021
MoE publication typeA1 Journal article-refereed

Keywords

  • bifacial cell
  • HTL-free
  • methylammonium iodide
  • passivation
  • perovskite
  • Single-walled carbon nanotubes

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