Market Trends, Materials & Manufacturing Processes
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100%
5. Lamination Process & PV Module Materials
Encapsulant alternatives to EVA
Encapsulants share market
Chemically cross-linked
elastomer
80%
60%
EPFL
Physically cross-linked
thermoplastic elastomer
40%
20%
0%
ITRPV 2022
2024 2026 2029 2032
2021 2022
■transparent EVA (Ethylene Vinyl Acetat)
■ Polyolefin
■PVB (Polyvinyl Butyral)
■PDMS (Polydimethyl-Silicone) / Silicone
I white EVA (Ethylene Vinyl Acetat)
extruded EVA with Polyolefin
ITPU (Thermoplastic Polyurethane)
ITRPV (2022)
Development of alternative polyolefines.
Irreversible covalent bondings
Cross-linked Polyolefines (POE)
Replacement of vinyl acetate group
No formation of acetic acid
Cross-linking necessary
Examples: STR POE Encapsulant, 3M Solar
Encapsulant Film PO8100N, Mitsui ASCE,
EVA will still remain the dominant encapsulant (...for a while).
International Technology Roadmap for Photovoltaic - ITRPV 2018 and G. Oreski, “Encapsulant Innovations for replacement of EVA", EUPVSEC 2019.
(Thermo)-reversible bondings
(lon and hydrogen bonds,
crystallites)
Thermoplastic Polyolefines (TPO)
Replacement of vinyl acetate group
No formation of acetic acid
No cross-linking
Examples: Borealis Quentys, DOW Engage,
DNP Solar encapsulants, DuPont lonomers etc.
PCCL
Polymer Competence Center Leoben
GoPV Project | SUMMER SCHOOL 29
PV SYSTEMS TECHNOLOGIES AND DESIGNView entire presentation