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Poly Cells – 4BB

Features

  • High conversion efficiency with high reliability,
  • Uniform cell performance with stable process control,
  • Low mismatch of cell performance during encapsulation,
  • Excellent performance under low lighting,
  • Low hot spot effect,
  • Low degradation under light exposure.

Production and quality control

  • Proper inspection through incoming production, outgoing and packaging,
  • Efficiency tested within ±0,2% accuracy,
  • 100% checked for reverse current and visual appearance,
  • Reference cell calibrated from Fraunhofer.

Mechanical Data and Design:

Dimension156mm x 156mm ± 0,5mm
Thickness (SI)200μm ± 400μm
FrontSilicon nitride antireflection coatings
Solid/hollow alternative silver busbar
BackFull-surface aluminum back-surface field
2,0mm ± 0,1mm (silver/aluminum) soldering pads

Electrical performance

Efficiency Code192191190189188187186185184183182181180179178
Efficiency
Eff (%)
19.2019.1019.0018.9018.8018.7018.6018.5018.4018.3018.2018.1018.0017.9017.80
Power
Ppm (W)
4.6694.6454.6234.5994.5754.5524.5274.5034.4794.4554.4304.4064.3804.3594.331
Short Circuit Current
Isc (A)
9.0679.0499.0299.0048.9758.9478.9238.9008.8818.8708.8598.8428.8328.8208.809
Open Circuit Voltage
Voc (V)
0.6360.6350.6340.6330.6320.6310.6310.6300.6300.6300.6290.6280.6270.6260.625
Max. Power Current
Ipm (A)
8.6228.5948.5708.5478.5218.4828.4558.4238.3978.3858.3688.3418.3238.3108.302
Max. Power Voltage
Vpm (V)
0.5420.5410.5390.5380.5370.5370.5360.5350.5330.5310.5290.5280.5260.5250.523

Temperature Coefficients

Current Temperature Coefficient
α (Isc)
0.02%/K
Voltage Temperature Coefficient
β (Voc)
-0.32 %/K
Power Temperature Coefficient
γ (Pmax)
-0.40 %/K