Enhancing Hole Transfer in Perovskite Solar Cell with Self-Assembled Monolayer by Introducing [1]Benzothieno [3,2-b][1]Benzothiophene Interlayer

Daimiota Takhellambam, Luigi Angelo Castriotta, Gloria Zanotti, Laura Mancini, Venanzio Raglione, Giuseppe Mattioli, Barbara Paci, Amanda Generosi, Marco Guaragno, Valerio Campanari, Giuseppe Ammirati, Faustino Martelli, Emanuele Calabrò, Antonio Cricenti, Marco Luce, Narges Yaghoobi Nia, Francesco Di Giacomo, Aldo Di Carlo

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Perovskite solar cells (PSCs) have received considerable attention for their increasing photovoltaic performance achieved through fine optimization of stacking layers and experimentation with device architecture. The incorporation of interlayers is shown to positively impact the fabrication process by improving photovoltaic parameters. In recent years, carbazole-based self-assembled monolayers (SAMs) are investigated as a potential hole-transport layer (HTL), due to their efficient passivating nature at the hole-selective interface and faster charge extraction. In this study, a novel interlayer 2-decyl[1]benzothieno [3,2-b][1]benzothiophene (C10-BTBT) is introduced, over the HTL SAM (2-(3,6-dimethoxy-9H-carbazol-9-yl) ethyl) phosphonic acid, also known as MeO–2PACz. This new interlayer over SAMs significantly improves charge transfer at the interface, resulting in a high fill factor of 85.89% and a boost in power conversion efficiency from 18.04% to 20.50%. In this research, the potential of interlayer–SAM combinations is highlighted in advancing PSC technology.

Original languageEnglish
Article number2300658
JournalSolar RRL
Volume7
Issue number24
DOIs
StatePublished - 1 Dec 2023
Externally publishedYes

Keywords

  • BTBT derivatives
  • charge-transport layers
  • density-functional theories
  • high fill factors
  • hybrid photovoltaics
  • organic semiconductors
  • self-assembled monolayers

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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