Details

Autor(en) / Beteiligte

• Jakubka, Florian
• Heyder, Madeleine
• Machui, Florian
• Kaschta, Joachim
• Eggerath, Daniel
• Lövenich, Wilfried
• Krebs, Frederik C.
• Brabec, Christoph J.

Titel

Determining the coating speed limitations for organic photovoltaic inks

Ist Teil von

• Solar energy materials and solar cells, 2013-02, Vol.109, p.120-125

Ort / Verlag

Amsterdam: Elsevier B.V

Erscheinungsjahr

2013

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• To determine the output capability of present organic photovoltaic (OPV) materials, it is important to know the theoretical maximum coating speeds of the used semiconductor formulations. Here, we present a comprehensive investigation of the coating stability window of several prototype organic semiconductor inks relevant for organic solar cells. The coating stability window was first determined experimentally by a sheet to sheet coater at velocities of up to 10m/min. A numerical simulation model based on the “Coating Window Suite 2010” software was established to give insight into the coating stability limitations at higher coating velocities. An analysis of PEDOT:PSS [poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)] in a water/isopropyl alcohol mixture as well as P3HT:PCBM [poly(3-hexylthiophene-2,5-diyl):Phenyl-C61-butyric acid methyl ester] in chlorobenzene, o-xylene and tetrahydronaphthalene showed the possibility of coating speeds up to 60m/min. The simulation further revealed the maximum coating head distances for a given wet film thickness. Finally, we show a solar-cell with slot-die coated PEDOT:PSS and P3HT:PCBM-layer based on the parameters obtained by the simulated data, which exhibits reasonable performance. [Display omitted] ► We evaluate slot die coated OPV functional layers in terms of maximum coating speed. ► We compare actual coating trials to simulated coating window boundaries. ► Coating window calculations let us estimate coating boundaries at higher speeds. ► PCBM:P3HT and PEDOT:PSS formulations can be coated up to 60m/min.