Drop-in replacement
Colorless PI replaces traditional amber PI while maintaining comparable mechanical strength and environmental resistance. Existing core assembly steps do not require redesign or revalidation.
Bifacia™ colorless polyimide
More light. Less heat. More orbital power.
A high-performance colorless polyimide solar-cell substrate engineered as a direct drop-in replacement for traditional amber PI—with the mechanical strength and environmental resistance needed for bifacial solar applications.
The Bifacia advantage
A transparent substrate that changes the system-level trade.
Bifacia™ preserves the established manufacturing logic of polyimide substrates while opening the rear side of a bifacial cell to reflected light and reducing solar heat absorption.
Up to 23% more power
By transmitting Earth-reflected light to the rear side of a bifacial cell, Bifacia™ can enable up to 23% additional power in LEO compared with equivalent monofacial panels.
Up to 10°C cooler
Lower solar absorption can reduce cell operating temperature by up to 10°C, supporting higher conversion efficiency and lower long-term thermal stress.
Colorless PI solar-cell substrate
From blocked rear-side light to bifacial gain.
Traditional amber polyimide blocks much of the useful light arriving from beneath the array. Bifacia™ allows reflected sunlight to pass through the substrate to the rear side of a bifacial cell, increasing energy yield without sacrificing process compatibility.
Application-level gain depends on orbit, albedo, cell architecture, thermal design, and stack integration. Qualification and final acceptance criteria remain mission-specific.
Review product data and applications
Technical snapshot
Designed for optical access, flex durability, and space-relevant screening.
Six reference values frame early screening for optical access, mass, outgassing, thermal stability, and repeated flex.
Transmittance≥ 90%Colorless PI substrate
Areal density< 300g/m² at 250 µm
TML< 1%Total mass loss
CVCM< 0.1%Collected volatiles
Glass transition≥ 120°CTg
Bending radius< 20 mm100,000 cycles
Questions, answered
Technical clarity before integration begins.
Review the core performance case, environmental screening approach, and sample process for Bifacia™ in one focused resource.
Power and thermal benefit
Understand peak rear-face gain, accumulated orbital energy, optical transmission, and the basis for cooler operation.
Explore performance FAQsSpace-relevant screening
Review the testing approach for atomic oxygen, UV/VUV exposure, thermal cycling, and proton irradiation.
Explore durability FAQsEvaluation and lead time
See what mission information to provide, how sample formats are defined, and the typical timeline after specifications are agreed.
Explore sample FAQsEvaluate Bifacia™ in your solar-cell stack.
Tell us your cell platform, required thickness, dimensions, orbit, exposure environment, integration route, and sample quantity.