Transparent Conductive Adhesives for Tandem Solar Cells Using Polymer-Particle Composites

Talysa R. Klein, Benjamin G. Lee, Manuel Schnabel, Emily L. Warren, Paul Stradins, Adele C. Tamboli, Maikel F.A.M. Van Hest

Research output: Contribution to journalArticlepeer-review

25 Scopus Citations


Transparent conductive adhesives (TCAs) can enable conductivity between two substrates, which is useful for a wide range of electronic devices. Here, we have developed a TCA composed of a polymer-particle blend with ethylene-vinyl acetate as the transparent adhesive and metal-coated flexible poly(methyl methacrylate) microspheres as the conductive particles that can provide conductivity and adhesion regardless of the surface texture. This TCA layer was designed to be nearly transparent, conductive in only the out-of-plane direction, and of practical adhesive strength to hold the substrates together. The series resistance was measured at 0.3 and 0.8 Ω cm2 for 8 and 0.2% particle coverage, respectively, while remaining over 92% was transparent in both cases. For applications in photovoltaic devices, such as mechanically stacked multijunction III-V/Si cells, a TCA with 1% particle coverage will have less than 0.5% power loss due to the resistance and less than 1% shading loss to the bottom cell.

Original languageAmerican English
Pages (from-to)8086-8091
Number of pages6
JournalACS Applied Materials and Interfaces
Issue number9
StatePublished - 7 Mar 2018

Bibliographical note

Publisher Copyright:
© 2018 American Chemical Society.

NREL Publication Number

  • NREL/JA-5K00-68945


  • adhesives
  • flexible microspheres
  • lamination
  • polymer-particle composites
  • tandem solar cells
  • transparent conductor


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