Morphology-Controlled Organic Solar Cells Improved by a Nanohybrid System of Single Wall Carbon Nanotubes Sensitized by PbS Core/Perovskite Epitaxial Ligand Shell Quantum Dots

Rezvan Soltani, Ali Asghar Katbab, Mykhailo Sytnyk, Amir Abbas Yousefi Amin, Niall Killilea, Marvin Berlinghof, Farzaneh Ahmadloo, Andres Osvet, Tobias Unruh, Wolfgang Heiss, T. Ameri

Research output: Contribution to journalArticlepeer-review

Abstract

In the present work, a new solution processed nanohybrid system comprising of single-wall carbon nanotubes (SWCNTs) loaded by PbS quantum dots (QD) capped with an epitaxial ligand shell of methylammonium lead iodide perovskite clusters (MA4PbI6) is designed and fabricated. Attachment of PbS/PbI6 QDs on the surface of SWCNT is followed and evidenced by performing Fourier Transform Infrared Spectroscopy, X-ray photoelectron spectroscopy, and Field Emission Scanning Electron Microscopy. The steady state and dynamic photoluminescence results reveal efficient charge transfer from photo-excited PbS/PbI6 to SWCNTs. Very low amount (0.3 wt.%) of the as-synthesized PbS/PbI6-SWCNT is further incorporated into a polymeric solar cell containing P3HT and PC61BM and exhibits a power conversion efficiency improvement of around 15% compared to the P3HT:PC61BM bulk heterojunction reference solar cell. Significantly, loading perovskite capped PbS QDs on the surface of SWCNT works more efficient rather than incorporating PbS/PbI6 or SWCNT separately onto the composition of the photoactive layer. While PbS/PbI6 broaden the absorption window of photoactive layer and enhance the photon harvesting, their loading on the SWCNT has a significant influence on the faster exciton splitting by efficient electron transfer as well as keeping the desired crystallinity and nanoscale morphology of host matrix upon addition of QDs. © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Original languageEnglish
Article number1700043
JournalSolar RRL
Volume1
Issue number8
DOIs
Publication statusPublished - 2017

Keywords

  • Carbon Quantum Dots
  • Charge transfer
  • Crystallinity
  • Excited states
  • Field emission microscopes
  • Fourier transform infrared spectroscopy
  • Graphene quantum dots
  • Heterojunctions
  • Iodine compounds
  • IV-VI semiconductors
  • Layered semiconductors
  • Ligands
  • Morphology
  • Nanocrystals
  • Nanotubes
  • Organic solar cells
  • Perovskite
  • Photons
  • Scanning electron microscopy
  • Semiconductor quantum dots
  • Single-walled carbon nanotubes (SWCN)
  • X ray photoelectron spectroscopy
  • Bulk heterojunction
  • Field emission scanning electron microscopy
  • Hybrid solar cells
  • Morphology-controlled
  • Nanoscale morphology
  • Polymeric solar cells
  • Power conversion efficiencies
  • Solution-processed
  • Lead compounds

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