An approach to optimize pre-annealing aging and anneal conditions to improve photovoltaic performance of perovskite solar cells

Dahiru M. Sanni, Yuanqing Chen, Aditya S. Yerramilli, Esidor Ntsoenzok, Joseph Asare, Sharafadeen A. Adeniji, Omolara V. Oyelade, Adebayo A. Fashina, Terry Alford

Research output: Contribution to journalArticle

Abstract

In this study, we reported a low-temperature, one-step solution process to fabricate perovskite solar cells using dehydrated lead acetate as the lead source. These perovskite films were aged at 200 s before thermal annealing at 90 °C for 5 min. Uniform perovskite films with lesser pinholes were obtained by this technique. The inverted planar (n-i-p) perovskite solar cell device resulted in a power conversion efficiency of 13%. A substantial finding was that the devices demonstrated high reproducibility. We also investigated the effect of annealing temperature on the optical and structural properties of the films and on the photovoltaic performances of the fabricated solar cell devices. For the aforementioned, a low-temperature, one-step solution process, the optimal temperature was achieved at 90 °C.

Original languageEnglish (US)
Article number3
JournalMaterials for Renewable and Sustainable Energy
Volume8
Issue number1
DOIs
StatePublished - Mar 1 2019

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Keywords

  • Aging time
  • Dehydrated lead acetate
  • Perovskite solar cells

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Materials Chemistry

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