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Increased upconversion performance for thin film solar cells: A trimolecular composition

Journal Article


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Abstract


  • Photochemical upconversion based on triplet-triplet annihilation (TTA-UC) is employed to enhance the short-circuit currents generated by two varieties of thin-film solar cells, a hydrogenated amorphous silicon (a-Si:H) solar cell and a dye-sensitized solar cell (DSC). TTA-UC is exploited to harvest transmitted sub-bandgap photons, combine their energies and re-radiate upconverted photons back towards the solar cells. In the present study we employ a dual-emitter TTA-UC system which allows for significantly improved UC quantum yields as compared to the previously used single-emitter TTA systems. In doing so we achieve record photo-current enhancement values for both the a-Si:H device and the DSC, surpassing 10-3 mA cm-2 sun-2 for the first time for a TTA-UC system and marking a record for upconversion-enhanced solar cells in general. We discuss pertinent challenges of the TTA-UC technology which need to be addressed in order to achieve its viable device application.

Authors


  •   Cheng, Yuen Yap. (external author)
  •   Nattestad, Andrew
  •   Schulze, Tim F. (external author)
  •   MacQueen, Rowan W. (external author)
  •   Fückel, Burkhard (external author)
  •   Lips, Klaus (external author)
  •   Wallace, Gordon G.
  •   Khoury, Tony (external author)
  •   Crossley, Maxwell J. (external author)
  •   Schmidt, Timothy W. (external author)

Publication Date


  • 2015

Citation


  • Cheng, Y. Yap., Nattestad, A., Schulze, T. F., MacQueen, R. W., Fückel, B., Lips, K., Wallace, G. G., Khoury, T., Crossley, M. J. & Schmidt, T. W. (2015). Increased upconversion performance for thin film solar cells: A trimolecular composition. Chemical Science, 7 (1), 559-568.

Scopus Eid


  • 2-s2.0-84950318560

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2715&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1713

Has Global Citation Frequency


Number Of Pages


  • 9

Start Page


  • 559

End Page


  • 568

Volume


  • 7

Issue


  • 1

Place Of Publication


  • United Kingdom

Abstract


  • Photochemical upconversion based on triplet-triplet annihilation (TTA-UC) is employed to enhance the short-circuit currents generated by two varieties of thin-film solar cells, a hydrogenated amorphous silicon (a-Si:H) solar cell and a dye-sensitized solar cell (DSC). TTA-UC is exploited to harvest transmitted sub-bandgap photons, combine their energies and re-radiate upconverted photons back towards the solar cells. In the present study we employ a dual-emitter TTA-UC system which allows for significantly improved UC quantum yields as compared to the previously used single-emitter TTA systems. In doing so we achieve record photo-current enhancement values for both the a-Si:H device and the DSC, surpassing 10-3 mA cm-2 sun-2 for the first time for a TTA-UC system and marking a record for upconversion-enhanced solar cells in general. We discuss pertinent challenges of the TTA-UC technology which need to be addressed in order to achieve its viable device application.

Authors


  •   Cheng, Yuen Yap. (external author)
  •   Nattestad, Andrew
  •   Schulze, Tim F. (external author)
  •   MacQueen, Rowan W. (external author)
  •   Fückel, Burkhard (external author)
  •   Lips, Klaus (external author)
  •   Wallace, Gordon G.
  •   Khoury, Tony (external author)
  •   Crossley, Maxwell J. (external author)
  •   Schmidt, Timothy W. (external author)

Publication Date


  • 2015

Citation


  • Cheng, Y. Yap., Nattestad, A., Schulze, T. F., MacQueen, R. W., Fückel, B., Lips, K., Wallace, G. G., Khoury, T., Crossley, M. J. & Schmidt, T. W. (2015). Increased upconversion performance for thin film solar cells: A trimolecular composition. Chemical Science, 7 (1), 559-568.

Scopus Eid


  • 2-s2.0-84950318560

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2715&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1713

Has Global Citation Frequency


Number Of Pages


  • 9

Start Page


  • 559

End Page


  • 568

Volume


  • 7

Issue


  • 1

Place Of Publication


  • United Kingdom