GaAs Solar Cell Basic Performance Parameters

Three junction gallium arsenide solar cell basic performance parameters

Product characteristics

The three-junction gallium arsenide solar cell uses germanium as the substrate, and is formed by three N / P structure sub-cells through the junction series, with high efficiency and strong radiation resistance.

application area

Low orbit aircraft, medium orbit aircraft, high orbit aircraft (nanosatellites, small satellites, commercial satellites, large satellites, drones, etc.)

base data

Gallium arsenide battery material: triple junction gallium arsenide (GaInP2 / GaAs / GeGe substrate

Size of gallium arsenide battery: (80.15 ± 0.05) mm * (40.15 ± 0.05) mm

Gallium arsenide battery area: 30.15c㎡

Thickness of gallium arsenide battery: 0.36±0.02mm

Gallium arsenide battery weight: (125 ± 12) mg / c ㎡

Abreflection membrane: TiOx / Al2O3

Glass cover plate: KFB120

Thickness of the cover plate: 120 ± 20 μ m

Interconnected sheet material: silver / silver plating

Thickness of the interconnection sheet: 20 / 25 μ m

Electrical performance data (AM 0,1SUN, 1353w / ㎡, 25℃)

Average open-circuit voltage Voc (mV): 2740

Average short-circuit current density of Joc (mA / c ㎡): 17.4

Maximum power voltage: Vm (mV): 2430

Maximum power current density of Joc (mA / c ㎡): 16.7

Average conversion efficiency of η base: 30%

Filling factor: 0.850

Irradiation intensity: (AM 0,1 SUN, 1353w / ㎡, 25℃)

The irradiation intensity was 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 value

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; withstand tensile force 0.83N / mm2

temperature coefficient

The radiation intensity was BOL 1MeV, 5 * 1014e / cm2 1MeV, and 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