4.7 Article

Sulfur-Functionalized Titanium Carbide Ti3C2TX (MXene) Nanosheets Modified Light Absorbers for Ambient Fabrication of Sb2S3 Solar Cells

Journal

ACS APPLIED NANO MATERIALS
Volume 5, Issue 9, Pages 12107-12116

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/acsanm.2c01520

Keywords

2D materials; MXene; Sb2S3; thin film; solar cells; functionalization

Funding

  1. Australian Research Council [DP190100120, FT200100015, DE220100521, DP200101217]
  2. King Abdullah University of Science and Technology (KAUST) through the Ibn Rushd Postdoctoral Fellowship Award
  3. Ministry of Education of Taiwan
  4. Center of Atomic Initiative for New Materials
  5. National Taiwan University [110L900803, 109L4000]
  6. Griffith University
  7. Australian Research Council [DP200101217, FT200100015, DE220100521] Funding Source: Australian Research Council

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Modifying light-harvesting materials through doping and functionalization can enhance the efficiency and stability of solar cells. In this study, sulfur-functionalized 2D MXene nanosheets were synthesized and used as doping agents in Sb2S3 light absorbers for solar cells. The best-performing device fabricated in ambient air showed significant performance enhancement compared to cells fabricated in a glovebox filled with an inert gas.
Modifying light-harvesting photoactive materials via doping and/or functionalization approaches is an effective approach for enhancing the efficiency and stability of solar cells. Herein, sulfur-functionalized two-dimensional (2D) transition-metal carbide (S-MXene) nanosheets are synthesized and introduced as doping agents into the Sb2S3 light absorbers for solar cells. Furthermore, Sb2S3 solar cells are fabricated in two different experimental environments including an inert gas (argon) and ambient conditions (air) using S-MXene as the dopant. Our theoretical calculations and experimental analysis revealed that the ambient air fabrication and incorporation of conductive S-MXene can lead to an increase in the charge transport of Sb2S3 solar cells as well as introduce a p-type doping effect. Moreover, the best-performing device with S-MXene fabricated in air exhibited significant enhancement (59.65%) in the performance with respect to the S-MXene-doped cells fabricated in a glovebox filled with an inert gas. This work not only introduces the possibility of ambient air fabrication of Sb2S3 solar cells but also opens an avenue toward the development of functionalized 2D dopants for Sb2S3 solar cells.

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