Single-Walled Carbon Nanotubes Enhance the Efficiency and Stability of Mesoscopic Perovskite Solar Cells

Munkhbayar Batmunkh, Cameron J. Shearer, Munkhjargal Bat-Erdene, Mark J. Biggs, Joseph G. Shapter

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Carbon nanotubes are 1D nanocarbons with excellent properties and have been extensively used in various electronic and optoelectronic device applications including solar cells. Herein, we report a significant enhancement in the efficiency and stability of perovskite solar cells (PSCs) by employing single-walled carbon nanotubes (SWCNTs) in the mesoporous photoelectrode. It was found that SWCNTs provide both rapid electron transfer and advantageously shifts the conduction band minimum of the TiO2 photoelectrode and thus enhances all photovoltaic parameters of PSCs. The TiO2-SWCNTs photoelectrode based PSC device exhibited a power conversion efficiency (PCE) of up to 16.11%, while the device fabricated without SWCNTs displayed an efficiency of 13.53%. More importantly, we found that the SWCNTs in the TiO2 nanoparticles (TiO2 NPs) based photoelectrode suppress the hysteresis behavior and significantly enhance both the light and long-Term storage stability of the PSC devices. The present work provides important guidance for future investigations in utilizing carbonaceous materials for solar cells.

Original languageEnglish
Pages (from-to)19945-19954
Number of pages10
JournalACS Applied Materials and Interfaces
Volume9
Issue number23
Early online date2 Jun 2017
DOIs
Publication statusPublished - 14 Jun 2017

Keywords

  • carbon nanotubes
  • device performance
  • device stability
  • perovskite solar cells
  • TiO photoelectrode

ASJC Scopus subject areas

  • Materials Science(all)

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