Enhancing Perovskite Solar Cells with Nanoparticle-Modified ZnO

Strategic Insights -

Researchers have made a breakthrough in improving the performance and stability of perovskite solar cells by incorporating plasmonic nanoparticles into a modified zinc oxide (ZnO) electron transport layer. According to the study, the power conversion efficiency of the fabricated perovskite solar cells increased significantly, with the interfacial layered ZnO/Ag and ZnO/Au devices achieving maximum efficiencies of about 6.35% and 6.41% respectively. The stability of the devices was also enhanced, with the ZnO/Au interfacial layered device retaining 93% and 82% of its initial power conversion efficiency under AM 1.5 G illumination and UV light conditions.

Key Takeaways:

  • The interfacial engineering of inorganic electron transport materials is crucial for implementing stable interfaces with perovskites in photovoltaics.
  • Planar perovskite solar cells (PSCs) fabricated using plasmonic nanoparticles (Ag and Au) incorporated flake-like ZnO nanostructured material achieved power conversion efficiencies of 4.68%, 4.92%, and 5.50% respectively.
  • The power conversion efficiency of the constructed PSCs, namely ZnO, ZnO/Ag, and ZnO/Au nanostructured-based electron transport layer, increased to 6.35% and 6.41% respectively with interfacial layering.
  • The stability of the fabricated devices was studied under AM 1.5 G illumination and UV light conditions, with the ZnO/Au interfacial layered device exhibiting significant enhancement retaining 93% and 82% stability of initial power conversion efficiency.
  • The study suggests that plasmonic nanoparticles-modified ZnO can enhance the device performance and stability of perovskite solar cells at ambient conditions.

Statistics:

  • A power conversion efficiency of 4.68% was achieved with the unmodified ZnO electron transport layer.
  • The power conversion efficiency increased to 4.92% with the incorporation of Ag nanoparticles.
  • The power conversion efficiency further increased to 5.50% with the incorporation of Au nanoparticles.
  • The interfacial layered ZnO/Ag and ZnO/Au devices achieved maximum efficiencies of about 6.35% and 6.41% respectively.
  • The stability of the ZnO/Au interfacial layered device retained 93% and 82% of its initial power conversion efficiency under AM 1.5 G illumination and UV light conditions.

Sources:

  • "Planar Perovskite Solar Cells: Plasmonic Nanoparticles-modified Zno As an Electron Transport Layer for Enhancing the Device Performance and Stability At Ambient Conditions." International Journal of Energy Research, 2022.
  • Wiley-Blackwell, 111 River St, Hoboken 07030-5774, NJ, USA. (www.wiley.com/)
  • Kamatchi Rajaram, Vellore Institute of Technology, School of Mechanical Engineering, Vellore 632014, Tamil Nadu, India.