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Optoelectronics Letters

, Volume 15, Issue 2, pp 117–121 | Cite as

Improved performance of perovskite solar cells through using (FA)x(MA)1-xPbI3 optical absorber layer

  • Mei-rong Sui (隋美蓉)Email author
  • Sheng-ping Li (李省平)
  • Xiu-quan Gu (顾修全)
Article
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Abstract

In this work, the perovskite solar cells (PSCs) were fabricated with the bandgap-tunable (FA)x(MA)1-xPbI3 absorber layers through a facile two-stage deposition route. The doping was realized by adding the formamidinium iodide (FAI) into a precursor MAI solution. Both the surface morphology and electrochemical impedance spectra (EIS) were conducted to evaluate the absorber layers or solar cells. After the optimization, the best PSC performance of 14.73% was achieved at a nominal FAI content of 12.5 at.%. The performance enhancement was attributed to both the enhancement of visible light harvesting and carrier transport capability. Besides, the stability of a PSC device based on the single MAPbI3 absorber layer was also investigated, and a power conversion efficiency (PCE) of 11.27% remained even after laying in vacuum for 10 days.

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Copyright information

© Tianjin University of Technology and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Mei-rong Sui (隋美蓉)
    • 1
    Email author
  • Sheng-ping Li (李省平)
    • 2
  • Xiu-quan Gu (顾修全)
    • 2
  1. 1.School of Medical ImagingXuzhou Medical UniversityXuzhouChina
  2. 2.School of Materials Science and EngineeringChina University of Mining and TechnologyXuzhouChina

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