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

Gopalan Saianand; Anantha-Iyengar Gopalan; Vellaisamy A.L. Roy; Gregory J. Wilson; Jaroon Jakmunee; Prashant Sonar; Liangyou Lin; Sae-Wan Kim; Shin-Won Kang

doi:10.1016/j.matlet.2020.128393

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 language	English
Article number	128393
Journal / Publication	Materials Letters
Volume	277
Online published	24 Jul 2020
Publication status	Published - 15 Oct 2020
Externally published	Yes

Link(s)

DOI	DOI https://doi.org/10.1016/j.matlet.2020.128393 Final Published version
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Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85089263020&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(db36a021-d73f-4fb7-b3b8-cbcdc4bb05c9).html

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)

[ RIS ] [ BibTeX ]

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. et al.

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

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

Saianand, G, Gopalan, A-I, Roy, VAL, Wilson, GJ, Jakmunee, J, Sonar, P, Lin, L, Kim, S-W & Kang, S-W 2020, 'Interface modification using a post-treatment-free heteropolyacid for effective charge selective bilayer formation in perovskite solar cells', Materials Letters, vol. 277, 128393. https://doi.org/10.1016/j.matlet.2020.128393

Saianand, G., Gopalan, A-I., Roy, V. A. L., Wilson, G. J., Jakmunee, J., Sonar, P., Lin, L., Kim, S-W., & Kang, S-W. (2020). Interface modification using a post-treatment-free heteropolyacid for effective charge selective bilayer formation in perovskite solar cells. Materials Letters, 277, [128393]. https://doi.org/10.1016/j.matlet.2020.128393

Saianand G, Gopalan A-I, Roy VAL, Wilson GJ, Jakmunee J, Sonar P et al. Interface modification using a post-treatment-free heteropolyacid for effective charge selective bilayer formation in perovskite solar cells. Materials Letters. 2020 Oct 15;277:128393. Epub 2020 Jul 24. doi: 10.1016/j.matlet.2020.128393

Saianand, Gopalan ; Gopalan, Anantha-Iyengar ; Roy, Vellaisamy A.L. et al. / Interface modification using a post-treatment-free heteropolyacid for effective charge selective bilayer formation in perovskite solar cells. In: Materials Letters. 2020 ; Vol. 277.