Design of Low Cost and Highly Efficient Un-doped Carrier Selective Heterocontact Solar Cells with SiO2 as Surface Passivation

  • Unique Paper ID: 169080
  • Volume: 11
  • Issue: 6
  • PageNo: 272-277
  • Abstract:
  • Photovoltaic (PV) technology, which converts light into electricity, can assist to meet rising energy demands. c-Si solar cells have a market share of approximately 95% and an efficiency range of 20% to 25%, which is less than the theoretical limit of 29.43% but has a longer reliability of more than 20 years. Low efficiency is caused by optical, recombination, and spectral losses, as well as parasitic absorption and Auger recombination. SHJ technology, which uses n-a-Si:H and p-a-Si:H as carrier-selective contacts and i-a-Si:H as surface passivation, achieves a high efficiency of 26.7%. However, placing doped a-Si contacts at high temperatures is challenging and produces hazardous vapors. Transition metal oxide (TMO) passivated contacts can be employed as an alternative material, with efficiencies of 24.75% and a potential of more than 28.4%. TMO's asymmetric hetero-contacts, carrier transport methods, material property optimization, and perspective can increase passivation and efficiency while lowering manufacturing costs and providing a levelized energy cost to society.

Copyright & License

Copyright © 2025 Authors retain the copyright of this article. This article is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

BibTeX

@article{169080,
        author = {Bhoora Ram},
        title = {Design of Low Cost and Highly Efficient Un-doped Carrier Selective Heterocontact Solar Cells with SiO2 as Surface Passivation},
        journal = {International Journal of Innovative Research in Technology},
        year = {2024},
        volume = {11},
        number = {6},
        pages = {272-277},
        issn = {2349-6002},
        url = {https://ijirt.org/article?manuscript=169080},
        abstract = {Photovoltaic (PV) technology, which converts light into electricity, can assist to meet rising energy demands. c-Si solar cells have a market share of approximately 95% and an efficiency range of 20% to 25%, which is less than the theoretical limit of 29.43% but has a longer reliability of more than 20 years. Low efficiency is caused by optical, recombination, and spectral losses, as well as parasitic absorption and Auger recombination. SHJ technology, which uses n-a-Si:H and p-a-Si:H as carrier-selective contacts and i-a-Si:H as surface passivation, achieves a high efficiency of 26.7%. However, placing doped a-Si contacts at high temperatures is challenging and produces hazardous vapors. Transition metal oxide (TMO) passivated contacts can be employed as an alternative material, with efficiencies of 24.75% and a potential of more than 28.4%. TMO's asymmetric hetero-contacts, carrier transport methods, material property optimization, and perspective can increase passivation and efficiency while lowering manufacturing costs and providing a levelized energy cost to society.},
        keywords = {c-Si solar cells, carrier-selective heterocontacts, surface passivation, transition metal oxide (TMO)},
        month = {November},
        }

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