Environmentally Printing Efficient Organic Tandem Solar Cells with High Fill Factors: A Guideline Towards 20\% Power Conversion Efficiency

Li N, Baran D, Spyropoulos GD, Zhang H, Berny S, Turbiez M, Ameri T, Krebs FC, Brabec C (2014)

Publication Language: English

Publication Type: Journal article, Original article

Publication year: 2014

Journal

Book Volume: 4

Pages Range: 1400084

Volume: 4

Issue: 11

Journal Issue: 11

DOI: 10.1002/aenm.201400084

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.

Authors with CRIS profile

Additional Organisation(s)

Involved external institutions

Bayerisches Zentrum für Angewandte Energieforschung e.V. (ZAE Bayern) Germany (DE) Merck Chemicals Ltd. United Kingdom (GB) BASF Schweiz AG Switzerland (CH) Technical University of Denmark / Danmarks Tekniske Universitet (DTU) Denmark (DK)

How to cite

APA:

Li, N., Baran, D., Spyropoulos, G.D., Zhang, H., Berny, S., Turbiez, M.,... Brabec, C. (2014). Environmentally Printing Efficient Organic Tandem Solar Cells with High Fill Factors: A Guideline Towards 20\% Power Conversion Efficiency. Advanced Energy Materials, 4(11), 1400084. https://doi.org/10.1002/aenm.201400084

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 4.11 (2014): 1400084.

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