Lamination of transparent conductive adhesives for tandem solar cell applications

Klein, Talysa R.; Young, Michelle S.; Tamboli, Adele C.; Warren, Emily L.

doi:10.1088/1361-6463/abe2c4

Lamination of transparent conductive adhesives for tandem solar cell applications

Journal Article · Mon Feb 22 00:00:00 EST 2021 · Journal of Physics. D, Applied Physics

DOI:https://doi.org/10.1088/1361-6463/abe2c4· OSTI ID:1774867

^[1]; Young, Michelle S. ^[1]; ^[1]; ^[1]

National Renewable Energy Lab. (NREL), Golden, CO (United States)

A transparent conductive adhesive (TCA) interlayer for mechanically stacked multijunction solar cells provides adhesive strength and electrical connection between sub-cells when stacked. The fabrication of TCA sheets from an ethyl-vinyl acetate (EVA) matrix and silver coated compliant conductive microspheres, similar to industry-standard EVA encapsulant sheets, compatible with a standard lamination process was developed. Blade coating TCA sheets using 3D printed blades and testing of vertical conduction through the interlayer with a TCA conductivity jig allowed for reproducible measurements and low-cost fabrication. The supplemental information provides design files to enable other researchers to produce their own blades and testing jigs. We identified 0.5 mm as an optimal blade height for producing lab-scale TCA sheets and 120 °C at 3 psi for 10 min as the optimal vacuum lamination process to minimize resistance and possible damage to samples. For TCA sheets with coverages between 0.75% and 9%, the series resistance was approximately 0.2 O cm2 which should result in minimal losses for one-sun photovoltaic applications.

Research Organization:: National Renewable Energy Laboratory (NREL), Golden, CO (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office

Grant/Contract Number:: AC36-08GO28308

OSTI ID:: 1774867

Alternate ID(s):: OSTI ID: 23159876

Report Number(s):: NREL/JA--5900-78556; MainId:32473; UUID:0bcf2c2d-bfb8-42df-87d2-5360bf50d697; MainAdminID:21179

Journal Information:: Journal of Physics. D, Applied Physics, Journal Name: Journal of Physics. D, Applied Physics Journal Issue: 18 Vol. 54; ISSN 0022-3727

Publisher:: IOP PublishingCopyright Statement

Country of Publication:: United States

Language:: English

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Related Subjects

14 SOLAR ENERGY
TCA
lamination
tandem solar cell
transparent conductive adhesive

Lamination of transparent conductive adhesives for tandem solar cell applications

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