Concentrator Cells
SunPower Corporation offers:
A selection of back-contact solar cells for high-concentration PV
Innovative solutions for packaging and assembling these cells into modules
Expertise in cell assembly, electrical connection, electrical insulation, heat dissipation, and reliability.
Development of new concentrator concepts, like the Micro-Concentrator module
Standard solar cell offering
Devices HECO252
HEDA312
Application
Fresnel lens
Dish, Central Receiver
Cell Dimensions
12 x 12 mm
10 x 15 mm
Active Area Dimensions
11 x 11 mm
10 x 15 mm
Active Area
1.210 cm2
1.500 cm2
Range of Concentration
100-200X
100-300X
Number of Soldering Pads
2
2
Thickness
120 mm
120 mm
Typical Peak Efficiency at 5 to 10 W/cm2
25%
24%
Typical Efficiency
23.50%
22%
at 25 W/cm2
Isc
11.3 A
13.3 A
at 25 W/cm2
Voc
820 mV
820 mV
at 25 W/cm2
FF
0.77
0.76
at 25 W/cm2
Imp
10.3 A
12.4 A
at 25 W/cm2
Vmp
690 mV
670 mV
at 25 W/cm2
Note: HECO (High-Efficiency COncentrator) cells are illuminated through an aperture of the same size as the active area. HEDA (High-Efficiency Dense Array) cells are totally illuminated.
Fresnel
HECO Cells (Square cells for Fresnel-lens applications)
Two solderable pads
Full front surface texture
Inactive edge for higher efficiency
1.2 cm x 1.2 cm
23.5% Eff. (Typ.) at 25 Watts/cm2
Plug-In Receiver
Like a standardized light bulb can be used in a variety of lamps, different concentrator modules could be designed around a standardized Plus-In Receiver. The Receiver contains the solar cell, a protection diode, electrical contacts, and a heat spreader, all encapsulated in a compact package that passes all standard qualification tests. A matching socket further simplifies the integration of this Receiver in the module design. The system allows in-the-field replacement of defective Receivers or upgrade of a module as newer, more efficient solar cells become available.
[img]http://www.sunpowercorp.com/images/Products/Concentrators/image004.jpg[img]
Dish
HEDA Cells (For Dish and Central Receiver Applications)
Two solderable pads
Full front surface texture
No inactive edge for full illumination
1 cm x 1.5 cm
22% Eff. (Typ.) at 25 Watts/cm2
Dense Array
SunPower has expertise in building dense cell assemblies capable of 200 Watts electrical output. The module contains electrical connections between the cells and a water cooling system
R&D
Micro-Concentrator:
A flat-plate concentrator system with a thickness of about an inch can be made by using small size TIR (Total Internal Reflection) lenses. SunPower has been developing this concept with real prototypes to explore cost-effective materials and manufacturing processes.
Micro Cells:
