The performance of triethanolamine (TEOA)-doped Poly(3,4-ethylenedioxythiophene): Polystyrene sulfonate on MAPbI3-based solar cells

Moeini Alishah H.

Optik, vol.311, 2024 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 311
  • Publication Date: 2024
  • Doi Number: 10.1016/j.ijleo.2024.171950
  • Journal Name: Optik
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Communication Abstracts, Compendex, INSPEC
  • Keywords: PEDOT:PSS, Perovskite, Sol-gel, Stability, Triethanolamine
  • Yıldız Technical University Affiliated: Yes

Abstract

For over a decade, perovskite-based solar cells have attracted a good deal of attention due to their unique characteristics. Charge transport materials (CTMs) have a vital function in the performance of perovskite solar cells properly. Therefore, it is crucial to choose a suitable and affordable CTM. A commonly regarded conductive polymer combination called poly (3,4 ethylenedioxythiophene)-poly (styrene sulfonate) (PEDOT:PSS) is mainly employed in organic and perovskite solar cells (PSCs) as a hole transport layer (HTL). Although PEDOT:PSS has benefits including affordability, simplicity, low-temperature processing, and ease of production, its acidic nature and low electrical conductivity pose drawbacks. In this research, it has been demonstrated that adding triethanolamine (TEOA) to the PEDOT:PSS solution improves the photovoltaic (PV) performance of sol-gel-based PSCs. The combination of enhanced conductivity and hole mobility of PEDOT:PSS layer with reduced perovskite trap density resulted in a more than 32 % boost in efficiency and better stability due to the basic characteristics of triethanolamine as well.