Evaluation of encapsulant materials for PV applications

Published: August 1, 2010

By Michael Kempe, Scientist, PV Module Reliability Group, National Renewable Energy Laboratory

Encapsulant materials used in PV modules serve multiple purposes. They physically hold components in place, provide electrical insulation, optically couple superstrate materials (e.g., glass) to PV cells, protect components from mechanical stress by mechanically de-coupling components via strain relief, and protect materials from corrosion. To do this, encapsulants must adhere well to all surfaces, remain compliant, and transmit light after exposure to temperature, humidity, and UV radiation histories. Encapsulant materials by themselves do not completely prevent water vapour ingress [1-3], but if they are well adhered, they will prevent the accumulation of liquid water providing protection against corrosion as well as electrical shock. Here, a brief review of some of the polymeric materials under consideration for PV applications is provided, with an explanation of some of their advantages and disadvantages.

Single Paper

Includes one paper digital access
US$ 21

Photovoltaics International SubscriptionDigital & Archive

Includes 12 months of unlimited digital access to the Photovoltaics International content, full online archive, technical paper collection (over 700), and more.

Includes 2 upcoming issues in digital.

US$ 449 per year

This Website Uses Cookies

By continuing browsing this website you are accepting our Cookie Policy, as well as our Terms of Use and Privacy Policy.