Performance enhancement of low temperature processed tin oxide as an electron transport layer for perovskite solar cells under ambient conditions

Mojgan Kouhnavard, Dariusz M. Niedzwiedzki, Pratim Biswas

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Most of the SnO2-based perovskite cells (PSC) are either fabricated in a controlled environment or have low energy conversion efficiencies. In this research, we used a low-temperature processed SnO2 as an electron transport layer (ETL) and fabricated planar PSC via a spin coating technique under ambient condition. By adjusting the concentration of SnO2 precursor solution, the efficiency of PSC was enhanced from 4% to 9%. Furthermore, different weight ratios of 3D-structured crumpled graphene oxide (CGO), which was synthesized using a one-step furnace aerosol reactor, were introduced into the SnO2 ETL to improve the PSC performance. The 0.25% CGO ratio resulted in a cell with highest Jsc of 21 mA/cm2 and the efficiency of 11%. Photoluminescence measurements also showed the benefit of doping SnO2 layer with CGO in charge transfer in the ETL and from the perovskite layer suppressing carrier recombination. The SnO2-based ETL with the presence of CGO can be a promising ETL for low-cost planar PSCs as well as tandem cells, fabricated under ambient condition.

Original languageEnglish (US)
Pages (from-to)11361-11371
Number of pages11
JournalInternational Journal of Energy Research
Volume44
Issue number14
DOIs
StatePublished - Nov 1 2020
Externally publishedYes

Keywords

  • ambient condition
  • crumpled graphene oxide
  • electron transport layer
  • energy conversion efficiency
  • furnace aerosol reactor, low-costperovskite solar cell
  • solution processed SnO

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology

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