Product Details
Satellite solar panel gallium arsenide cells are based on aerospace power products. Its conversion efficiency is 30-35%, the component thickness is less than 1 mm, and it has good high energy density and special environmental resistance.
Electrical performance under standard test conditions: (AM1.5, 1000W/m2, 25℃)
Product Features
The triple-junction gallium arsenide solar cell uses germanium as the substrate and consists of three N/P structure sub-cells connected in series through tunnel junctions. It has high efficiency and strong radiation resistance.
Application areas
Low-orbit aircraft, medium-orbit aircraft, high-orbit aircraft (nano-satellites, small satellites, commercial satellites, large satellites, drones, etc.)
Basic Data
GaAs battery material: triple junction gallium arsenide (GaInP2/GaAs/GeGe substrate
GaAs cell dimensions：（80.15±0.05）mm *（40.15±0.05）mm
GaAs battery area: 30.15c㎡
GaAs cell thickness：0.36±0.02mm
GaAs cell weight：（125±12）mg/c㎡
Anti-reflection coating: TiOx/Al2O3
Cover glass: KFB120
Coverglass thickness：120±20 μm
Interconnect material: silver/Kovar silver plating
Interconnect thickness：20/25μm
Electrical performance data (AM0, 1SUN, 1353w/㎡, 25℃)
Average open circuit voltage Voc (mV): 2740
Average short circuit current density Joc (mA/c㎡): 17.4
Maximum power voltage Vm (mV): 2430
Maximum power current density Joc (mA/c㎡): 16.7
Average conversion efficiencyηbare：30%
Fill factor: 0.850
Irradiation intensity: (AM0, 1SUN, 1353w/㎡, 25℃)
Irradiation intensity 1*1014e/cm2 5*1014e/cm2 1*1015e/cm2
Im/Imo 0.99 0.97 0.94
Vm/Vmo 0.96 0.93 0.92
Pm/Pmo 0.95 0.90 0.86
Design Parameters
Voltage Vl (mV) 2350; Average current Ll ave (mA) 500; Minimum current Ll min (mA) 480
Diode Protection
Vforward（620mA） ≤1.0V ; Ireverse(4.0V) ≤50μA
Other parameters
Absorption coefficient ≤0.92; tensile strength ≥0.83N/mm2
Temperature coefficient
Irradiation intensity BOL 1MeV, 5*1014e/cm2 1MeV, 1*1015e/cm2
Jsc(μA/cm2/C) 11.0 10.0 13.0
Voc(mV/ C) -5.9 -6.1 -6.3
Jm(μA/cm2/C) 9.0 9.5 15.0
Vm(mV/ C) -6.0 -6.2 -6.5