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C4MJ 40% Point Focus Solar Cells

C4MJ 40% Point Focus Solar Cells
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C4MJ 40% Point Focus Solar Cells

Product catalog summary
Product Overview
The document details the specifications and performance characteristics of Spectrolab's C4MJ Metamorphic Fourth Generation CPV Technology solar cells. These cells are designed for concentrated photovoltaic (CPV) applications and are known for their high efficiency and robust performance.

Specifications
  • Typical Efficiency: 40%
  • Recommended Operating Temperature: <110°C
  • Epitaxial Structure: Triple junction solar cell on Germanium substrate with layers of GaInP (1.82 eV), GaInAs (1.33 eV), and Ge (0.66 eV).
  • Metallization: Silver on front busbar and grid fingers, optional gold flash finish; silver with 500Ǻ gold on back surface.
  • Cell Thickness: T = 190 µm, F = 25 µm, C = 38.2 µm

Packaging and Configuration
  • Packaging Format: Processed Wafer (11), Bare Cell in Waffle Tray (21)
  • Configuration Options: C4MJ with silver (401) or gold (411) front contact finish, both 100% tested.

Performance and Testing
  • Temperature Coefficient of Efficiency: < –0.06%/°C
  • Performance at 50 W/cm2: Effmp > 37.6%, target average = 40.0%, actual average = 39.8%
  • Qualification Tests: Include thermal cycling, damp heat, high temperature soak, outdoor field trials, high temperature reverse bias, HTOL, and ESD tests.
  • Key Performance Metrics: Jsc = 7.533 A/cm2, Voc = 3.125 Volts, Jmp = 7.249 A/cm2, Vmp = 2.762 Volts, FF = 85.1%

Conclusion
The C4MJ solar cells are highly efficient and have undergone rigorous testing to ensure durability and performance under various conditions. They are suitable for high-performance CPV applications.
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Catalog excerpts

C4MJ 40% Point Focus Solar Cells-1

CPV Point Focus Solar CellsC4MJ Metamorphic Fourth Generation CPV Technology SFirst 40% production cell SFirst fully qualified metamorphic cellProduct Description Typical Efficiency 40% Recommended operating temperature <110°C Epitaxial Structure Triple junction solar cell on Germanium substrate GaInP (1.82 eV) / GaInAs (1.33 eV) / Ge (0.66 eV) Metallization •Silver metallization on front busbar and grid fingers (optional gold flash finish) •Silver metallization with 500A gold on back surface CPV Cell Ordering Guide -Wafer Column Wafer Row . Mechanical Dimensions Optical Aperture = A * M W = M + 2C L = A + 2B + 2 F + 2C T= 190 pm in all cases F = 25 pm in all cases C = 38.2 pm in all cases ENVIRONMENTAL MANAGEMENT SVSTEM CERTIFIED BV DNV = ISO 14001 = Spectrolab, Inc. 12500 Gladstone Avenue, Sylmar, California 91342 USA • Phone 818.365.4611 • FAX: 818.361.5102 • Website : www.spectrolab.com © Spectrolab, Inc. All Rights Reserved Specifications Subject to Change without Notice. Rev. 10/27/11

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C4MJ 40% Point Focus Solar Cells-2

Spectral Response Typical Current-Voltage Characteristics E y 1 E -I— o d> CL GO V o Q Typical Performance Over Temperature Temperature coefficient of efficiency: < -0.06%/°C Qualification Tests Completed Full Qualification Report is available on request (May 2011) ENVIRONMENTAL MANAGEMENT SYSTEM CERTIFIED BY DNV = ISO 14001 = Spectrolab, Inc. 12500 Gladstone Avenue, Sylmar, California 91342 USA • Phone 818.365.4611 • FAX: 818.361.5102 • Website : www.spectrolab.com © Spectrolab, Inc. All Rights Reserved Specifications Subject to Change without Notice. Rev. 10/27/11

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