Photovoltaics and OPV

Adhesives for Photovoltaics and OPV

Bonding technologies play a key role in advancing organic photovoltaics (OPV) and flexible electronics — from indoor light harvesting for wearables to ultra‑flexible outdoor energy systems. Today’s adhesives offer far more than structural bonding — they add functionality, durability, and process efficiency.

Hoenle has worked closely with partners and customers to develop a portfolio of multi-functional adhesives designed specifically for OPV and flexible electronic applications. These formulations deliver enhanced environmental resistance, optimized barrier foil lamination, and reliable conductive bonding for SMD components in flexible packaging.

Choosing the right adhesive means aligning material properties, curing behavior, and assembly requirements. When perfectly matched, manufacturers gain greater design freedom, higher process efficiency, and improved throughput in high volume production, including reel to reel.

On the right side: An electrically conductive adhesive is dispensed into laser-cut holes for the electrical connection of flexible solar films.

Electrically conductive adhesives for opv photovoltaics

Supporting Rapid OPV Evolution

As OPV technologies evolve rapidly and remain largely unstandardized, adhesives must be adapted or newly developed to meet unique material and process demands — a challenge Hoenle actively supports with tailored solutions.

Organic Photovoltaic and flexible electronics manufacturing lacks standardization and changes quickly. Hoenle supports this dynamic field through:

  • material‑specific adhesive adjustments
  • custom developments
  • solutions for unique device architectures and processes

In the following tables you will find a selection of Hoenle adhesives suitable for OPV and photovoltaic assembly applications. Other products or customized solutions are available on request. To download the technical datasheets (TDS) please click on the adhesive name.

Adhesive Application Areas Viscosity [mPas] Base Curing Special Properties
  • Die attach
  • Flexible printed circuits
  • Contacting on Flex PCBs
  • Conductive bonding
  • OPV photovoltaics
10,000 – 15,000 (Rheometer 10s^-1) epoxy thermal
  • Very flexible, solvent-free
  • Electrically conductive
  • Thermally conductive
  • Very high adhesion to glass, various metals and plastics
  • Snap Cure
  • Curing with thermode possible
- 7,000-10,000 (Rheometer, 25 °C, 10^s-1) epoxy thermal
  • non-conductive
  • high flexibility
  • very fast curing
  • very low ion content
  • high bond strength to several substrates
- 1,300 - 1,600 (Rheometer, 25 °C, 10s^-1) acrylate UV/VIS
  • High peel strength; Optically clear; Outstanding flexibility;
  • Excellent elongation; Resistant to moisture
- 1,500 - 2,000 (Rheometer, 25 °C, 10s^-1) epoxy UV/VIS/thermal
  • Very good wetting properties
  • Very flexible, low WVTR
  • High Tg
  • Electrically insulating
- 6,200 (Rheometer, 25 °C, 10s^-1) hybrid UV/VIS
  • Very flexible, low WVTR (water vapour transmission rate)
  • Flexible with approved compatibility to pv materials
  • Very good wetting properties, electrically insulating

*UV = 320 – 390 nm          VIS = 405 nm

Contact And Support

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Our Bonding and UV Curing System Solutions

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