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 Electrode pastes

Screen-printing is an automated and reproducible way to prepare electrodes for e.g. dye-sensitized and perovskite solar cells. Dyenamo offers screen-printable pastes developed for realizing efficient TiO2 working electrodes and Pt counter electrodes. The pastes can e.g. be applied with the laboratory screen-printer DN-HM02.

Counter electrode pastes

TiO2 blocking layer pastes

Screen-printable TiO2 electrode pastes



Counter electrode pastes

DN-EP01 (Pt paste)

Description:
DN-EP01 is a thixotropic terpineol-based screen-printable Pt paste with a viscosity of 4-7 Pa.s at 10s-1. The printed layer is conventionally sintered around 450 °C, resulting in a layer of uniformly distributed Pt nano-particles with good transparency and high catalytic activity. It can equally be applied by the so-called doctor blading technique. The paste color is straw or light yellow.


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TiO2 blocking layer pastes

DN-EP02 (Blocking layer paste)

Description:
DN-EP02 is a terpineol-based screen-printable paste opening for a thin and dense blocking layer of TiO2. Such an under-layer is deposited below the conventional nanocrystalline TiO2 layer in order to reduce the contact between the active materials, such as hole transport material, perovskite material, and DSSC electrolytes, to the conductive substrate. The paste viscosity is 15-25 Pa.s at10s-1. The printed layer is conventionally sintered around 450 - 550 °C.

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TiO2 electrode pastes

DN-EP03 (TiO2 paste)

Description:
DN-EP03 is a screen-printable TiO2 for preparing working electrodes for e.g. dye-sensitized solar cells. The paste is characterized by an extreme high level of particle dispersion allowing layers to be transparent up towards a thickness of 10 µm. The layers can be sintered throughout a temperature range of 450 to 550 °C to obtain a highly transparent and high-performance mesoscopic layer. For non-transparent devices, we recommend to print a layer of the paste DN-GPS-22OS on top of the transparent layer.

Properties:
  • Anatase particle size:18 - 20 nm
  • Concentration:appr. 20 wt. (can be diluted with terpineol to make thinner                                                           layers)
  • Medium:Terpineol, ester alcohols, polymeric binders
  • Specific surface area:approx. 85 m2/g

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DN-GPS-22OS (Screen-printable opaque TiO2 paste, 22 - 25 nm)

Description:
Paste with slightly larger TiO2 particles in relation to DN-GPS-18OS including light-scattering particles for obtaining combined active TiO2 particles and light-scattering particles in one single layer.

Properties:
  • Anatase particle size:22 - 25 nm
  • Scatter particle size:> 150 nm
  • Concentration:appr. 16 wt.
  • Medium:Terpineol, polymeric binders
  • Specific surface area:50 - 60 m2/g

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