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Graphdiyne as a Host Active Material for Perovskite Solar Cell Application.

Jiangsheng Li1, Tonggang Jiu1,2,3, Siqi Chen1

  • 1Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences , Qingdao 266101 , PR China.

Nano Letters
|October 24, 2018
PubMed
Summary

Graphdiyne (GD) is introduced as a host material in perovskite solar cells, significantly enhancing performance. This novel approach improves crystallization, efficiency to 21.01%, and device stability.

Keywords:
GraphdiyneMAPbI3host active materialperovskite devicesolar cells

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Area of Science:

  • Materials Science
  • Renewable Energy
  • Nanotechnology

Background:

  • Perovskite solar cells (PSCs) are promising renewable energy devices.
  • Improving PSC efficiency and stability remains a key research challenge.
  • Novel host materials are explored to enhance perovskite active layers.

Purpose of the Study:

  • To investigate graphdiyne (GD) as a host material in perovskite active layers for PSCs.
  • To optimize the molar ratio of active materials for peak performance.
  • To evaluate the impact of GD on perovskite film properties and device characteristics.

Main Methods:

  • Fabrication of perovskite solar cells incorporating graphdiyne.
  • Optimization of the molar ratio of PbI2/MAI/GD.
  • Characterization of perovskite film morphology, crystallization, and optoelectronic properties.
  • Performance testing including power conversion efficiency (PCE) and stability.

Main Results:

  • The optimal molar ratio of PbI2/MAI/GD was determined to be 1:1:0.25.
  • A peak power-conversion efficiency of 21.01% was achieved.
  • Graphdiyne incorporation led to uniform MAPbI3 films with high crystallinity, large domains, and reduced grain boundaries.
  • Negligible current-voltage hysteresis and significantly improved device stability were observed.

Conclusions:

  • Graphdiyne serves as an effective host material for perovskite active layers.
  • GD enhances perovskite film quality, leading to improved photovoltaic performance.
  • The use of graphdiyne shows great potential for advancing perovskite solar cell technology.