Multifunctional MgO layer in perovskite solar cells

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Xudong Guo
  • Haopeng Dong
  • Wenzhe Li
  • Nan Li
  • Liduo Wang

Detail(s)

Original languageEnglish
Pages (from-to)1727-1732
Number of pages6
Journal / PublicationChemPhysChem
Volume16
Issue number8
Online published7 Apr 2015
Publication statusPublished - 8 Jun 2015
Externally publishedYes

Abstract

A multifunctional magnesium oxide (MgO) layer was successfully introduced into perovskite solar cells (PSCs) to enhance their performance. MgO was coated onto the surface of mesoporous TiO2 by the decomposition of magnesium acetate and, therefore, could block contact between the perovskite and TiO2. X-ray photoelectron spectroscopy and infrared spectroscopy showed that the amount of H2O/hydroxyl absorbed on the TiO2 decreased after MgO modification. The UV/Vis absorption spectra of the perovskite with MgO modification revealed an enhanced photoelectric performance compared with that of unmodified perovskite after UV illumination. In addition to the photocurrent, the photovoltage and fill factor also showed an enhancement after modification, which resulted in an increase in the overall efficiency of the cell from 9.6 to 13.9 %. Electrochemical impedance spectroscopy (EIS) confirmed that MgO acts as an insulating layer to reduce charge recombination. The great cover-up: A multifunctional magnesium oxide (MgO) layer is successfully introduced into perovskite solar cells (PSCs) to enhance the performance of the cells.

©2015 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

Research Area(s)

  • absorption, photochemistry, solar cells, stability, UV degradation

Bibliographic Note

Publisher Copyright: © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Citation Format(s)

Multifunctional MgO layer in perovskite solar cells. / Guo, Xudong; Dong, Haopeng; Li, Wenzhe et al.
In: ChemPhysChem, Vol. 16, No. 8, 08.06.2015, p. 1727-1732.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review