Aerosol jet printed grid for ITO-free inverted organic solar cells

Pälvi Kopola (Corresponding Author), B. Zimmermann, A. Filipovic, H.-F. Schleiermacher, J. Greulich, Sanna Rousu, Jukka Hast, R. Myllylä, U. Würfel

Research output: Contribution to journalArticleScientificpeer-review

44 Citations (Scopus)

Abstract

Aerosol jet printing is investigated as a new deposition method for a current collecting grid in indium tin oxide (ITO) free organic solar cells with an inverted layer sequence. In this device configuration, the ITO layer which usually serves as the hole contact is replaced by a transparent highly conductive poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) layer in combination with a silver grid deposited by aerosol jet printing. Since the cells are illuminated from the grid side, the optimisation of the grid design is a trade-off between area coverage and conductivity of the grid lines. These factors have been controlled by the printing parameters such as chuck temperature, printing speed and the number of printing passes. In this paper, we demonstrate that continuous, conductive grid lines with a minimum line width of 58 µm  can be processed on the top of the PEDOT:PSS layer. For single pass printing the area coverage varied from 5.8% to 11.9% with corresponding effective sheet resistances ranging from 8.9 Ω to 1.5 Ω. The ITO-free inverted devices with aerosol jet printed grid (an active area of 1.1 cm2) show comparable performance to the cells with an evaporated gold grid. The effective sheet resistance can be further decreased by multiple printing passes without increasing the area coverage proportionally due to an improved aspect ratio. By increasing the conductivity and aspect ratio by multiple line printing, the cell length in the module structures can be significantly extended.
Original languageEnglish
Pages (from-to)252-258
Number of pages6
JournalSolar Energy Materials and Solar Cells
Volume107
DOIs
Publication statusPublished - 2012
MoE publication typeA1 Journal article-refereed

Fingerprint

Tin oxides
Aerosols
Indium
Printing
Sheet resistance
Aspect ratio
Chucks
Organic solar cells
indium tin oxide
Silver
Gold
Linewidth

Keywords

  • Aerosol jet printing
  • current collecting grid
  • indium tin oxide free
  • inverted layer sequence
  • organic solar cells

Cite this

Kopola, P., Zimmermann, B., Filipovic, A., Schleiermacher, H-F., Greulich, J., Rousu, S., ... Würfel, U. (2012). Aerosol jet printed grid for ITO-free inverted organic solar cells. Solar Energy Materials and Solar Cells, 107, 252-258. https://doi.org/10.1016/j.solmat.2012.06.042
Kopola, Pälvi ; Zimmermann, B. ; Filipovic, A. ; Schleiermacher, H.-F. ; Greulich, J. ; Rousu, Sanna ; Hast, Jukka ; Myllylä, R. ; Würfel, U. / Aerosol jet printed grid for ITO-free inverted organic solar cells. In: Solar Energy Materials and Solar Cells. 2012 ; Vol. 107. pp. 252-258.
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abstract = "Aerosol jet printing is investigated as a new deposition method for a current collecting grid in indium tin oxide (ITO) free organic solar cells with an inverted layer sequence. In this device configuration, the ITO layer which usually serves as the hole contact is replaced by a transparent highly conductive poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) layer in combination with a silver grid deposited by aerosol jet printing. Since the cells are illuminated from the grid side, the optimisation of the grid design is a trade-off between area coverage and conductivity of the grid lines. These factors have been controlled by the printing parameters such as chuck temperature, printing speed and the number of printing passes. In this paper, we demonstrate that continuous, conductive grid lines with a minimum line width of 58 µm  can be processed on the top of the PEDOT:PSS layer. For single pass printing the area coverage varied from 5.8{\%} to 11.9{\%} with corresponding effective sheet resistances ranging from 8.9 Ω to 1.5 Ω. The ITO-free inverted devices with aerosol jet printed grid (an active area of 1.1 cm2) show comparable performance to the cells with an evaporated gold grid. The effective sheet resistance can be further decreased by multiple printing passes without increasing the area coverage proportionally due to an improved aspect ratio. By increasing the conductivity and aspect ratio by multiple line printing, the cell length in the module structures can be significantly extended.",
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Kopola, P, Zimmermann, B, Filipovic, A, Schleiermacher, H-F, Greulich, J, Rousu, S, Hast, J, Myllylä, R & Würfel, U 2012, 'Aerosol jet printed grid for ITO-free inverted organic solar cells', Solar Energy Materials and Solar Cells, vol. 107, pp. 252-258. https://doi.org/10.1016/j.solmat.2012.06.042

Aerosol jet printed grid for ITO-free inverted organic solar cells. / Kopola, Pälvi (Corresponding Author); Zimmermann, B.; Filipovic, A.; Schleiermacher, H.-F.; Greulich, J.; Rousu, Sanna; Hast, Jukka; Myllylä, R.; Würfel, U.

In: Solar Energy Materials and Solar Cells, Vol. 107, 2012, p. 252-258.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Aerosol jet printed grid for ITO-free inverted organic solar cells

AU - Kopola, Pälvi

AU - Zimmermann, B.

AU - Filipovic, A.

AU - Schleiermacher, H.-F.

AU - Greulich, J.

AU - Rousu, Sanna

AU - Hast, Jukka

AU - Myllylä, R.

AU - Würfel, U.

PY - 2012

Y1 - 2012

N2 - Aerosol jet printing is investigated as a new deposition method for a current collecting grid in indium tin oxide (ITO) free organic solar cells with an inverted layer sequence. In this device configuration, the ITO layer which usually serves as the hole contact is replaced by a transparent highly conductive poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) layer in combination with a silver grid deposited by aerosol jet printing. Since the cells are illuminated from the grid side, the optimisation of the grid design is a trade-off between area coverage and conductivity of the grid lines. These factors have been controlled by the printing parameters such as chuck temperature, printing speed and the number of printing passes. In this paper, we demonstrate that continuous, conductive grid lines with a minimum line width of 58 µm  can be processed on the top of the PEDOT:PSS layer. For single pass printing the area coverage varied from 5.8% to 11.9% with corresponding effective sheet resistances ranging from 8.9 Ω to 1.5 Ω. The ITO-free inverted devices with aerosol jet printed grid (an active area of 1.1 cm2) show comparable performance to the cells with an evaporated gold grid. The effective sheet resistance can be further decreased by multiple printing passes without increasing the area coverage proportionally due to an improved aspect ratio. By increasing the conductivity and aspect ratio by multiple line printing, the cell length in the module structures can be significantly extended.

AB - Aerosol jet printing is investigated as a new deposition method for a current collecting grid in indium tin oxide (ITO) free organic solar cells with an inverted layer sequence. In this device configuration, the ITO layer which usually serves as the hole contact is replaced by a transparent highly conductive poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) layer in combination with a silver grid deposited by aerosol jet printing. Since the cells are illuminated from the grid side, the optimisation of the grid design is a trade-off between area coverage and conductivity of the grid lines. These factors have been controlled by the printing parameters such as chuck temperature, printing speed and the number of printing passes. In this paper, we demonstrate that continuous, conductive grid lines with a minimum line width of 58 µm  can be processed on the top of the PEDOT:PSS layer. For single pass printing the area coverage varied from 5.8% to 11.9% with corresponding effective sheet resistances ranging from 8.9 Ω to 1.5 Ω. The ITO-free inverted devices with aerosol jet printed grid (an active area of 1.1 cm2) show comparable performance to the cells with an evaporated gold grid. The effective sheet resistance can be further decreased by multiple printing passes without increasing the area coverage proportionally due to an improved aspect ratio. By increasing the conductivity and aspect ratio by multiple line printing, the cell length in the module structures can be significantly extended.

KW - Aerosol jet printing

KW - current collecting grid

KW - indium tin oxide free

KW - inverted layer sequence

KW - organic solar cells

U2 - 10.1016/j.solmat.2012.06.042

DO - 10.1016/j.solmat.2012.06.042

M3 - Article

VL - 107

SP - 252

EP - 258

JO - Solar Energy Materials and Solar Cells

JF - Solar Energy Materials and Solar Cells

SN - 0927-0248

ER -

Kopola P, Zimmermann B, Filipovic A, Schleiermacher H-F, Greulich J, Rousu S et al. Aerosol jet printed grid for ITO-free inverted organic solar cells. Solar Energy Materials and Solar Cells. 2012;107:252-258. https://doi.org/10.1016/j.solmat.2012.06.042