Lightweight Design
Thinned Ge substrate technology reduces device weight and improves system specific power in W/kg.
Thinned upright Ge-based triple-junction flexible GaAs solar cells
Thinned upright Ge-based triple-junction flexible GaAs solar cells
InGaP / GaAs / Ge triple-junction flexible GaAs solar cells with a thinned Ge substrate.
FULLSUNS Thinned upright Ge-based triple-junction flexible GaAs solar cells use a mature InGaP / GaAs / Ge triple-junction GaAs technology system. By thinning the Ge substrate while retaining the reliability and efficiency advantages of conventional space-grade triple-junction architecture, the product balances lightweight design, high specific power and bendable capability.
The upright Ge-based triple-junction architecture includes an InGaP top cell, GaAs middle cell, Ge bottom cell and substrate, anti-reflection coating and metal electrode system.
Advantages
Lightweight, high specific power and bendable capability.
Bendable and Flexible
Supports flexible structure design for curved surfaces, lightweight platforms and deployable energy systems.
Triple-junction Efficiency
Mature InGaP / GaAs / Ge multi-junction technology route enables high-efficiency photovoltaic conversion.
High Reliability
Inherits the long-term technology base of space-grade triple-junction GaAs cells with strong stability and environmental adaptability.
Thickness Options
Thickness can be discussed according to required bending radius, cell size, packaging and operating environment.
Engineering Support
FULLSUNS supports evaluation around size, bending radius, encapsulation method and application scenario.
Structure
InGaP / GaAs / Ge triple-junction GaAs technology system.
Device Stack
- AR Coating
- InGaP Top Cell
- Tunnel Junction
- GaAs Middle Cell
- Tunnel Junction
- Ge Bottom Cell
- Thinned Ge Substrate
- Back Contact
Technical Note
Compared with conventional rigid space solar cells, thinned Ge-based technology effectively reduces device mass while improving flexibility. It is suitable for lightweight, highly integrated and special-structure energy applications.
Applications
Designed for lightweight, deployable and special-structure power systems.
Space-related Energy Systems
For systems requiring low weight, high reliability and high conversion efficiency.
Deployable Energy Systems
Supports deployable and rollable power structures where cell flexibility is required.
UAV Energy Systems
Applicable to UAV power systems, lightweight energy platforms and high-reliability portable power devices.
Special Environment Power
For flexible power systems, special curved surfaces and high-integration structural power applications.
Rollable Power Systems
Engineering evaluation can be based on required bending radius and thickness options.
FULLSUNS Technology
FULLSUNS extends high-efficiency space-grade GaAs technology toward flexible energy solutions for advanced lightweight power systems.