Carbon nanoparticles in high-performance perovskite solar cells

Yavari, M ; Sharif University of Technology | 2018

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  1. Type of Document: Article
  2. DOI: 10.1002/aenm.201702719
  3. Publisher: Wiley-VCH Verlag , 2018
  4. Abstract:
  5. In the past few years, organic–inorganic metal halide ABX3 perovskites (A = Rb, Cs, methylammonium, formamidinium (FA); B = Pb, Sn; X = Cl, Br, I) have rapidly emerged as promising materials for photovoltaic applications. Tuning the film morphology by various deposition techniques and additives is crucial to achieve solar cells with high performance and long-term stability. In this work, carbon nanoparticles (CNPs) containing functional groups are added to the perovskite precursor solution for fabrication of fluorine-doped tin oxide/TiO2/perovskite/spiro-OMeTAD/gold devices. With the addition of CNPs, the perovskite films are thermally more stable, contain larger grains, and become more hydrophobic. NMR experiments provide strong evidence that the functional groups of the CNPs interact with FA cations already in the precursor solution. The fabricated solar cells show a power-conversion efficiency of 18% and negligible hysteresis. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
  6. Keywords:
  7. Carbon nanoparticles ; Thermal stability ; Lead ; Metal halides ; Nanocomposites ; Nanoparticles ; Nanostructured materials ; Nuclear magnetic resonance spectroscopy ; Perovskite ; Solar cells ; Solar power generation ; Thermodynamic stability ; Tin ; Tin oxides ; Carbon Nano-Particles ; Deposition technique ; Fluorine doped tin oxide ; Long term stability ; Photovoltaic applications ; Photovoltaic devices ; Power conversion efficiencies ; Precursor solutions ; Perovskite solar cells
  8. Source: Advanced Energy Materials ; Volume 8, Issue 12 , 2018 ; 16146832 (ISSN)
  9. URL: https://onlinelibrary.wiley.com/doi/full/10.1002/aenm.201702719