Next-Generation Phosphor Solution for High-Power LEDs
Solid-State Phosphor Encapsulation for Harsh Environments
YEKGLASS PiG (Phosphor in Glass) is specifically designed for high-power LED applications where long-term color stability and thermal reliability are critical.
Available in custom chip sizes and phosphor compositions, manufactured with low-temperature glass to protect heat-sensitive phosphors during sintering.
As a high-durability LED phosphor encapsulant, YEKGLASS PiG replaces conventional silicone-based materials in demanding lighting applications.
Why Replace Phosphor in Silicone with PiG
Glass-Based Stability for Long-Term Performance
PiG is a solid-state phosphor solution that solves the reliability issues commonly found in silicone binders.
While PiS materials degrade under high temperatures and humidity, PiG maintains its structural and optical integrity over time.
As a solid-state wavelength converter, PiG offers superior resistance to thermal quenching and color shift over the product lifetime.
| Property | PiS (Silicone) | PiG (Glass) |
|---|---|---|
| Heat Resistance | Low | High (Over 400 °C) |
| Moisture Resistance | Poor | Excellent |
| Durability | Weak over time | Long-Term Stable |
| Luminous Stability | Degrades with current | Maintains peak output |
| Suitable for | Low-power LEDs | High power, Automotive, Industrial LEDs |
Application Fields
Trusted in the Toughest LED Environments
From automotive headlamps to horticultural and medical lighting — PiG delivers where silicone cannot.
Automotive (Headlamp, DRL, Signal)
Horticulture (660nm Deep Red)
COB & DOB Modules
Medical Specialty Lighting
PiG Engineering Capabilities
Broad Experience in Custom PiG Development
YEKGLASS manufactures custom PiG chips and phosphor glass chips in a range of sizes and phosphor compositions.
YEKGLASS has extensive experience developing Phosphor in Glass solutions tailored to specific customer needs and LED system requirements.
We offer full control over phosphor type, chip size, thickness, and sintering profile ensuring consistent optical performance and compatibility with your final application.
We specialize in deep red (660nm) PiG for horticultural lighting, using heat-stable red phosphors that maintain spectral integrity under continuous operation.
| Parameter | Specification |
|---|---|
| Phosphor Types | CaAlSiN₃:Eu²⁺, YAG:Ce³⁺, LuAG:Ce³⁺, α-SiAlON:Eu²⁺ and more |
| PiG Chip Size | Min 4 μm to 4" Wafer |
| Thickness | Min 50 μm to 2 mm |
| Tolerance | ±10 μm |
| Refractive Index | > 1.82 (@450 nm) |
We tailor PiG compositions to meet your luminous efficiency, color target, and thermal performance requirements.
Our team is ready to help you evaluate material compatibility, optimize phosphor encapsulation, and meet color stability targets.
Contact us to discuss your LED application or request a custom PiG sample.
Interested in Red PiG for Your Application?
Red Phosphor Compatibility
Thermal-Safe Red PiG with Custom Low-Temperature Glass
Red phosphors like CaAlSiN₃:Eu²⁺ are highly sensitive to heat and easily degrade in traditional sintering environments.
YEKGLASS solves this challenge by using specially formulated Low Melting Glass, which enables PiG sintering at just 250–350 °C.
High transmittance and refractive index in the blue-violet region enhances LED photoluminescence efficiency.
YEK Glass’s low-melting glass material is engineered for optimal optical performance.
This ensures strong photoluminescence and allows safe sintering of heat-sensitive red phosphors without degradation.
Thermal stability and low glass transition enable sintering at reduced temperatures.
| Model | Tg (°C) | *Tw (°C) | CTE (×10⁻⁷/°C) | D50(μm) | Type |
|---|---|---|---|---|---|
| YPF Series for PiG | 290 ± 10 | 310–350 | 115 ± 10 | 10 ± 5 | Transparent(N₂) |
Ready to Start Your PiG Project?
YEKGLASS supports full-cycle development from formulation to chip production.
Get in touch to request specs, timeline, or quotation.