Interface modification using a post-treatment-free heteropolyacid for effective charge selective bilayer formation in perovskite solar cells

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Gopalan Saianand
  • Anantha-Iyengar Gopalan
  • Gregory J. Wilson
  • Jaroon Jakmunee
  • Prashant Sonar
  • Liangyou Lin
  • Sae-Wan Kim
  • Shin-Won Kang

Detail(s)

Original languageEnglish
Article number128393
Journal / PublicationMaterials Letters
Volume277
Online published24 Jul 2020
Publication statusPublished - 15 Oct 2020
Externally publishedYes

Abstract

We rationally utilized a solution-processed post-heat treatment-free heteropolyacid compound, phosphomolybdic acid hydrate (PMAH) as a charge selective interface modifier for poly(3,4-ethylene dioxythiophene): polystyrene sulfonate (PEDOT:PSS) in inverted perovskite solar cells (PSCs). The fabricated PSCs with PMAH/PEDOT:PSS bilayer exhibited significant improvement in the power conversion efficiency (PCE) (∼12%) with superior long-term air-stability as compared to PEDOT:PSS based PSCs (9.8%). The measured photovoltaic performance demonstrates that the inclusion of PMAH as an interface to ITO and PEDOT:PSS is an efficient way of realizing stable and efficient PSCs.

Research Area(s)

  • Charge selective modifier, Heteropolyacid, PEDOT:PSS, Perovskite solar cells, Polyoxometalates

Citation Format(s)

Interface modification using a post-treatment-free heteropolyacid for effective charge selective bilayer formation in perovskite solar cells. / Saianand, Gopalan; Gopalan, Anantha-Iyengar; Roy, Vellaisamy A.L.; Wilson, Gregory J.; Jakmunee, Jaroon; Sonar, Prashant; Lin, Liangyou; Kim, Sae-Wan; Kang, Shin-Won.

In: Materials Letters, Vol. 277, 128393, 15.10.2020.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review