Quasi-1D materials for advanced thin-film photovoltaics

Project Director: Dr. Cristina BESLEAGA STAN

LIGHTCELL aims at developing innovative architectures for thin-film photovoltaics (TF-PV) utilizing inorganic, environmentally stable (Sb2X3, X=S, Se) materials and sustainable fabrication processes with reduced energy consumption. Sb2X3 can be synthesized in a quasi-one-dimensional (quasi-1D) form, addressing the main factors limiting the efficiency of TF-PV, i.e., recombination of the photogenerated carriers at the grain boundaries. A multidisciplinary consortium of academic and industrial partners aims at developing a scalable technology of sustainable, cost-efficient, and lightweight PV. For faster feedback loop to synthesis, a new tool for the rapid and non-destructive mapping of 2D and 3D crystallographic orientation of quasi-1D materials will be developed. The PV technology developed in LIGHTCELL will be validated in demonstrators by the industrial partners, targeting lightweight building-integrated PV applications, contributing to sustainable green energy production.

Objective: LIGHTCELL aims to demonstrate a new generation of all inorganic, environmentally-friendly and stable, quasi-1D Sb2S(Se)3 solar cells featuring efficiencies beyond state of the art, providing a green alternative to the commercial CdTe thin-film solar cells.

Aimed results:

1. To develop novel strategies for synthesizing solar absorbers with vertical quasi-one-dimensional (quasi-1D) motifs and intrinsically passive GBs (1D-Sb2S(Se)3);
2. To implement rapid, non-destructive polarized Raman microscopy for 2D and 3D crystallographic orientation mapping of solar absorbers;
3. To demonstrate all inorganic solar cell devices based on quasi-1D absorbers with efficiency up to 15% on a lab scale and 10% on a large-scale produced in an industrial environment.

Coordinator:  Technical University of Denmark (Dr. Stela Canulescu)

Partner 1: LightNovo APS (Dr. Oleksii Ilchenko)

Partner 2: National Institute of Material Physics (Dr. Cristina Besleaga Stan)

Partner 3: Tallinn University of Technology (Prof. Maarja Grossberg)

Partner 4: DGIST (Dr. Dae-Hwan Kim)

Partner 5: ULTECH (Dr. Dae-Young Kong)


National Institute of Material Physics team:

  1. Cristina Besleaga Stan
  2. Aurelian Catalin Galca
  3. Alin Velea
  4. Ioana Pintilie
  5. George Stan
  6. Iosif-Daniel Simandan
  7. Outman El Khouja
  8. Andrei Tomulescu
  9. Viorica Stancu
  10. Iulia Corina Ciobotaru
  11. Vasilica Toma
  12. Bocirnea Amelia-Elena
  13. Sara Laafar

The kickoff meeting took place at DTU, Danmark, on 25 August 2023.

Recently (19.04.2024), we had our 6 month meeting at NIMP, Romania, where we had the perfect opportunity to exchange personal and professional ideas with our partners from Denmark (DTU, LightNovo), Estonia (TALT), and South Korea (DIGST, ULTECH).



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