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Space Triple Junction Solar Cell Assembly 30%TJ80SCA

Technical Description 30%TJ80SCA
This cell type is an GaInP2/GaAs/Ge on Ge substrate triple junction solar cell assembly (efficiency class 30-32%). The solar cell assembly is equipped with an discrete Si bypass diode, interconnectors and cover glass.
Triple-junction GaAs Solar Array
Features
Triple-junction GaAs Solar Array is consiste Triple-junction GaAs Solar Array or solar panels in a certain way of electrical assembly.Characteristics is high output power,high strong anti-radiation capacity,wide application range.
Applications
LEO,MEO,GEO and explorations of the spacecraft
Flight experience
satellites of SJ series ,satellites of GY series.
Each product we will provide a rigorous test report.
  • 30%TJ80SCA

  • YIM

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triple-junction GaAs solar cell

 The triple junction GaAs solar cell consists of a germanium (Ge) bottom cell, an indium gallium arsenic (InGaAs) middle cell and a gallium indium phosphorus (GaInP2) top cell connected in series, with an n/p cell structure.

 Typical photoelectric conversion efficiency is 30% and typical dimensions is 144.3mm x 68.5mm x 0.24mm.

Cover glass

 The cover glass is made of radiation resistant cover glass with MgF2 film vapour plated on the surface, the width of the edge defect of the MgF2 film due to tooling does not exceed 0.5 mm and the total area of the defect does not exceed 5% of the total area of the cover glass.

 Typical dimensions of the cover glass is 144.45mm x 68.65mm x 0.12mm.

Bypass diodes

 Bypass diodes use silicon diodes.

 In the absence of light and with an applied short-circuit current of 1.2Isc, the on-state voltage of the silicon diode is less than 1.0V.

 In the absence of light and with an applied -4V reverse voltage, reverse leakage current of the silicon diode is less than 10μA

 Typical dimensions are 17.3mm x 9.5mm x 0.19mm

 Interconnecting pieces

The interconnecting pieces are silver-plated interconnects with an outermost layer of silver, 30μm±5μm thick, of which the silver is not less than 99.95% pure.

 The interconnecting piece has a strain relief ring which is intact and undamaged

 Interconnecting piece stress relief rings tested to fatigue without fracture.

 Typical dimension is 8.0mm x 6.5mm x 0.03mm.



图片2

Weight

The weight of laminated cell is:13g±1.5g。


Basic materials

GaInP2/GaAs/Ge on Ge substrate

oxide layer

TiOX/Al2O3

size

144.45mm×68.65mm

Effective area

80cm2

weight

13.2±1.0g

thickness

0.40±0.05mm

Glass cover plate

Irradiation resistant glass cover,120±20μm

Interconnection strip

KOVAR,35μm

Open circuit voltage Voc (mV)

2780

Short circuit current density Jsc (mA/cm2)

17.0

Optimal working point voltage Vm (mV)

2470

Best operating point current Jm (mA/cm2)

16.3

Conversion efficiency η (1353W/m2)

30%




Shanghai YIM of Space Power-sources specializes in supplying China Aerospace Group (CASC) space solar cell products. Shanghai YIM main tasks cover the design, supply, test and new product research of...

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