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Environmentally printing efficient organic tandem solar cells with high fill factors : a guideline towards 20% power conversion efficiency

Author
Organization
Abstract
The tandem concept involves stacking two or more cells with complementary absorption spectra in series or parallel connection, harvesting photons at the highest possible potential. It is strongly suggested that the roll-to-roll production of organic solar cells will employ the tandem concept to enhance the power conversion efficiency (PCE). However, due to the undeveloped deposition techniques, the challenges in ink formulation as well as the lack of commercially available high performance active materials, roll-to-roll fabrication of highly efficient organic tandem solar cells currently presents a major challenge. The reported high PCE values from lab-scale spin-coated devices are, of course, representative, but not helpful for commercialization. Here, organic tandem solar cells with exceptionally high fill factors and PCE values of 7.66% (on glass) and 5.56% (on flexible substrate), which are the highest values for the solution-processed tandem solar cells fabricated by a mass-production compatible coating technique under ambient conditions, are demonstrated. To predict the highest possible performance of tandem solar cells, optical simulation based on experimentally feasible values is performed. A maximum PCE of 21% is theoretically achievable for an organic tandem solar cell based on the optimized bandgaps and achieved fill factors.
Keywords
LOW-BANDGAP POLYMER, INTERMEDIATE LAYER, DESIGN RULES, STABILITY, DONORS

Citation

Please use this url to cite or link to this publication:

MLA
Li, Ning, et al. “Environmentally Printing Efficient Organic Tandem Solar Cells with High Fill Factors : A Guideline towards 20% Power Conversion Efficiency.” ADVANCED ENERGY MATERIALS, vol. 4, no. 11, 2014, doi:10.1002/aenm.201400084.
APA
Li, N., Baran, D., Spyropoulos, G. D., Zhang, H., Berny, S., Turbiez, M., … Brabec, C. J. (2014). Environmentally printing efficient organic tandem solar cells with high fill factors : a guideline towards 20% power conversion efficiency. ADVANCED ENERGY MATERIALS, 4(11). https://doi.org/10.1002/aenm.201400084
Chicago author-date
Li, Ning, Derya Baran, George D. Spyropoulos, Hong Zhang, Stephane Berny, Mathieu Turbiez, Tayebeh Ameri, Frederik C. Krebs, and Christoph J. Brabec. 2014. “Environmentally Printing Efficient Organic Tandem Solar Cells with High Fill Factors : A Guideline towards 20% Power Conversion Efficiency.” ADVANCED ENERGY MATERIALS 4 (11). https://doi.org/10.1002/aenm.201400084.
Chicago author-date (all authors)
Li, Ning, Derya Baran, George D. Spyropoulos, Hong Zhang, Stephane Berny, Mathieu Turbiez, Tayebeh Ameri, Frederik C. Krebs, and Christoph J. Brabec. 2014. “Environmentally Printing Efficient Organic Tandem Solar Cells with High Fill Factors : A Guideline towards 20% Power Conversion Efficiency.” ADVANCED ENERGY MATERIALS 4 (11). doi:10.1002/aenm.201400084.
Vancouver
1.
Li N, Baran D, Spyropoulos GD, Zhang H, Berny S, Turbiez M, et al. Environmentally printing efficient organic tandem solar cells with high fill factors : a guideline towards 20% power conversion efficiency. ADVANCED ENERGY MATERIALS. 2014;4(11).
IEEE
[1]
N. Li et al., “Environmentally printing efficient organic tandem solar cells with high fill factors : a guideline towards 20% power conversion efficiency,” ADVANCED ENERGY MATERIALS, vol. 4, no. 11, 2014.
@article{8749248,
  abstract     = {{The tandem concept involves stacking two or more cells with complementary absorption spectra in series or parallel connection, harvesting photons at the highest possible potential. It is strongly suggested that the roll-to-roll production of organic solar cells will employ the tandem concept to enhance the power conversion efficiency (PCE). However, due to the undeveloped deposition techniques, the challenges in ink formulation as well as the lack of commercially available high performance active materials, roll-to-roll fabrication of highly efficient organic tandem solar cells currently presents a major challenge. The reported high PCE values from lab-scale spin-coated devices are, of course, representative, but not helpful for commercialization. Here, organic tandem solar cells with exceptionally high fill factors and PCE values of 7.66% (on glass) and 5.56% (on flexible substrate), which are the highest values for the solution-processed tandem solar cells fabricated by a mass-production compatible coating technique under ambient conditions, are demonstrated. To predict the highest possible performance of tandem solar cells, optical simulation based on experimentally feasible values is performed. A maximum PCE of 21% is theoretically achievable for an organic tandem solar cell based on the optimized bandgaps and achieved fill factors.}},
  articleno    = {{1400084}},
  author       = {{Li, Ning and Baran, Derya and Spyropoulos, George D. and Zhang, Hong and Berny, Stephane and Turbiez, Mathieu and Ameri, Tayebeh and Krebs, Frederik C. and Brabec, Christoph J.}},
  issn         = {{1614-6832}},
  journal      = {{ADVANCED ENERGY MATERIALS}},
  keywords     = {{LOW-BANDGAP POLYMER,INTERMEDIATE LAYER,DESIGN RULES,STABILITY,DONORS}},
  language     = {{eng}},
  number       = {{11}},
  pages        = {{7}},
  title        = {{Environmentally printing efficient organic tandem solar cells with high fill factors : a guideline towards 20% power conversion efficiency}},
  url          = {{http://doi.org/10.1002/aenm.201400084}},
  volume       = {{4}},
  year         = {{2014}},
}

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