Abstract
Important physical properties of materials used in PV module packaging are presented. High-moisture-barrier, high-resistivity, adhesion-promoting coatings on polyethyl-ene terephthalate (PET) films have been fabricated and characterized for use in PV module application and com-pared to standard polymer backsheet materials. Ethylene vinyl acetate (EVA) and an encapsulant replacement for EVA arestudied for their water vapor transmission rate (WVTR) and adhesion properties. WVTR, at test conditions up to 85?C/100% relative humidity (RH), and adhesion val-ues are measured before and after filtered xenon arc lamp ultraviolet (UV) exposure and damp heat exposure at 85?C/85% RH. Water ingress is quantified by weight gain and embedded humidity sensors.
| Original language | American English |
|---|---|
| Number of pages | 7 |
| State | Published - 2003 |
| Event | National Center for Photovoltaics (NCPV) and Solar Program Review Meeting - Denver, Colorado Duration: 24 Mar 2003 → 26 Mar 2003 |
Conference
| Conference | National Center for Photovoltaics (NCPV) and Solar Program Review Meeting |
|---|---|
| City | Denver, Colorado |
| Period | 24/03/03 → 26/03/03 |
NREL Publication Number
- NREL/CP-520-33578
Keywords
- adhesion
- coatings
- encapsulation
- materials testing
- moisture barrier backsheet
- photovoltaic modules
- water-vapor transmission rate
