Authors :
Rahul Kumar
Volume/Issue :
Volume 10 - 2025, Issue 12 - December
Google Scholar :
https://tinyurl.com/bdfaurna
Scribd :
https://tinyurl.com/yc597zsf
DOI :
https://doi.org/10.38124/ijisrt/25dec1121
Note : A published paper may take 4-5 working days from the publication date to appear in PlumX Metrics, Semantic Scholar, and ResearchGate.
Abstract :
Zinc oxide (ZnO), triallyl isocyanate (TAIC), and zinc acylate form a complementary stabilizer–co-agent system
that enhances the reliability of EVA and POE photovoltaic (PV) encapsulants under heat, moisture, and UV stress. ZnO
provides broad-band UV absorption (UV-A/UV-B) and functions as an acid scavenger—neutralizing acetic acid generated
by EVA hydrolysis—thereby mitigating silver grid/ribbon corrosion and preserving optical clarity when used in
surface-modified (e.g., silane-treated) nanoparticulate form. TAIC acts as a multifunctional peroxide co-agent, increasing
crosslink density and enabling lower peroxide levels, which reduces browning risk and improves dimensional stability. Zinc
acylate contributes ionic/covalent interactions at interfaces, improving adhesion to glass/backsheet and promoting cure
uniformity across film thickness. We outline the synergistic mechanism: ZnO stabilizes the matrix (UV protection + acid
scavenging), TAIC builds tri-functional bridges that raise gel content, and zinc acylate enhances interfacial bonding—
collectively delivering superior UV resistance, adhesion retention, and potential-induced degradation (PID) resilience.
Comparative guidance for EVA vs POE (cure kinetics, lamination windows, moisture barrier, and electrical insulation) is
provided, along with practical formulation ranges for ZnO/TAIC/zinc acylate packages and notes on dispersion and
transparency control. A visual IEC 61215 test matrix (Damp Heat, UV preconditioning, Thermal Cycling, Humidity Freeze,
PID) and illustrative performance charts (UV transmittance vs ZnO loading, gel content vs lamination time, corrosion index
vs ZnO loading) demonstrate typical trends and trade-offs. This integrated approach helps module manufacturers balance
throughput and long-term reliability, enabling publish-ready documentation and data-driven optimization of encapsulant
systems for modern PV architectures.
References :
- Wallner et al., Polymers (2022): EVA vs POE crosslinking kinetics. https://doi.org/10.3390/polym14071441
- Wendt et al., Progress in Photovoltaics (2024): TBEC & TAIC interactions; gel content & browning. https://onlinelibrary.wiley.com/doi/10.1002/pip.3849
- Fiandra et al., Polymer Degradation and Stability (2024): UV aging of EVA/TPO/POE films. https://doi.org/10.1016/j.polymdegradstab.2023.110643
- Oreski et al., Progress in Photovoltaics (2020): Polyolefin encapsulants vs EVA under damp heat. https://doi.org/10.1002/pip.3323
5. Ghaffar et al., Sustainability (2024): ZnO nanocomposite coatings; UV blocking & durability. https://doi.org/10.3390/su16156538
Zinc oxide (ZnO), triallyl isocyanate (TAIC), and zinc acylate form a complementary stabilizer–co-agent system
that enhances the reliability of EVA and POE photovoltaic (PV) encapsulants under heat, moisture, and UV stress. ZnO
provides broad-band UV absorption (UV-A/UV-B) and functions as an acid scavenger—neutralizing acetic acid generated
by EVA hydrolysis—thereby mitigating silver grid/ribbon corrosion and preserving optical clarity when used in
surface-modified (e.g., silane-treated) nanoparticulate form. TAIC acts as a multifunctional peroxide co-agent, increasing
crosslink density and enabling lower peroxide levels, which reduces browning risk and improves dimensional stability. Zinc
acylate contributes ionic/covalent interactions at interfaces, improving adhesion to glass/backsheet and promoting cure
uniformity across film thickness. We outline the synergistic mechanism: ZnO stabilizes the matrix (UV protection + acid
scavenging), TAIC builds tri-functional bridges that raise gel content, and zinc acylate enhances interfacial bonding—
collectively delivering superior UV resistance, adhesion retention, and potential-induced degradation (PID) resilience.
Comparative guidance for EVA vs POE (cure kinetics, lamination windows, moisture barrier, and electrical insulation) is
provided, along with practical formulation ranges for ZnO/TAIC/zinc acylate packages and notes on dispersion and
transparency control. A visual IEC 61215 test matrix (Damp Heat, UV preconditioning, Thermal Cycling, Humidity Freeze,
PID) and illustrative performance charts (UV transmittance vs ZnO loading, gel content vs lamination time, corrosion index
vs ZnO loading) demonstrate typical trends and trade-offs. This integrated approach helps module manufacturers balance
throughput and long-term reliability, enabling publish-ready documentation and data-driven optimization of encapsulant
systems for modern PV architectures.