Structure of a solar photovoltaic panel, from top to bottom: outer frame / glass / encapsulation film / solar cells / encapsulation film / back sheet
Encapsulant films are typically made of EVA, POE, or EPE (a composite film of EVA and POE). These films must have excellent electrical insulation properties, as well as good weather resistance and aging resistance, and be capable of lasting 20–30 years;
Arkema peroxides can be used in protective films;
Arkema’s peroxide products used in solar encapsulant films:
- Improve PV film production efficiency, extend scorch protection technology, and significantly reduce the risk of gel formation;
- Enable rapid curing at low temperatures, improving lamination efficiency at module factories; prevent the formation of gel spots and hard lumps during the heating process;
- In EPE films, they enable simultaneous cross-linking of POE and EVA;
| Model | Description |
| Luperox® TBEC-H | High purity (≥98.5%), low ion content (e.g., Cl⁻, Na⁺) |
| Luperox® LC | Patented product based on TBEC-H with extended scorch resistance; |
| Luperox® TCS | A fast-curing variant of LC that reduces hot-pressing time; |
| Luperox® TP | A high-speed curing variant of LC; curing speed: TP > TCS; |
In EPE films, pairing POE with TCS (which has a faster curing rate) and using LC for EVA enables simultaneous cross-linking of POE and EVA;
EVA films: TBEC-H, TCS, or TP are recommended
POE films: TBEC-H, TCS, or TP are recommended
In EPE films, pairing POE with TCS (which has a relatively fast curing rate) and using LC for EVA enables simultaneous cross-linking of POE and EVA;
Recommended dosage:
In EVA: 0.5–0.8%
In POE: 0.65–1.1%