CEP-25ML

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CEP-25ML　Spectral Response Measurement System(Evaluation for Multi-junction solar cells and compouned semiconductor solar cells)

The CEP-25ML has been designed to irradiate solar cells with monochromatic light of constant energy and constant photons without wavelength dependence,and measures the spectral response and quantum efficiency of various solar cells.The system is equipped with a color bias light source for multi-junction solar cells. Equipped with white bias light source as standard,spectral response measurement under simulated sunlight and I-V measurement as a solar simulator using AM-1.5G can be easily performed. 

 

Catalog（PDF）

 

Measurement data

The data shows external quantum efficiency(EQE) measurement data of a Ge photo dioce ditector.With a constant photon of 1×1014photon/cm2, the measurement can be permed with excekkent SN in the wavelength range of 300 to 1700nm.


 

 

The data is EQE measurement data of two-junction solar cells consisting of crystaline silicon and amorphous silicon.By using color filters, it is possible to measure the EQE of each of the top and bottom cells.

 

 

Feature

 

 

Spectral response measurement by constant energy irradiation

 

  • The light intensity is adjusted with a continuos density variable ND filter,and constant energy light without wavelength characteristics is irradiated. The spectral response of the sample can be calculated from the irradiation light intensity and the measured photocurrent. The same measurement can be performed performed under white light or color bias light. Bias voltage can be set.

 

Measurement of quantum effciency by constant photon irrdiation

 

  • The light intensity is adjusted with a continuous density variable ND filter,and constant photon light is irradiated. The quantum effciency of the sample can be calculated from the irradiation light intensity and the measured photocurrent. The same measurement can be performed under white light or color bias light. The bias voltage can be set.

 

 

Solar cell characteristics and I-V chraccteristics measurement

 

  • The cell characteristics can be measured with white bias light.

 

Solar spectrum calculation(IEC 60904-3)

 

  • The short-circuit current density can be calculated from the integration of the solar spectrum and quantum effciency.

 

 

Specifications

 

 Mesurement  Spectral response,quantum efficiency,I-V curve
 Wavelength range  300～1700nm（～2000 can be expanded as an option)
 Light source for monochromatic light  Xe lamp + Halogen lamp
 lrrdiation area for monochromatic light  20×20mm（can be expended to 50×50mm as an option）
 Wavelength purity  Variable,Max 20nm
 lrrdiation intensity  5～50μW/cm2 or more（Wavelength 350～1200nm）
 Positional non-uniformity  Within ±2.5%
 Constancy of wavelenth intensity  Within ±3%
 Irradiation mode  Constant energy and constant photon
 Meaurement mode  DC and AC（13～100Hz）
 Light source for White light  Xe lamp (Auto color bias)
 Irrdiation area or White light  20×20mm
 Spectral match  JIS C8912・C8933 ClassA

 

 

Standard Configuration

 

●Xe lamp 500W (for monochromatic light)

●Xe lamp 500W Power supply(for monochromatic light)
●Halogen lamp 400W(for monochrmatic light)
●Halogen lamp 400W power supply(for monochromatinc light)
●Light condensing optical system(for 2 light source type)
●Monochromator
●Grating   600line/mm brazed at 300nm
●Grating　600line/mm brazed at 500nm
●Grating　600line/mm brazed at 1600nm
●Light emitting optical system(auto continuous density variable ND filter)
●Variable frequency chopper　DC/13～100Hz
●High order light cut filters
●Xe lamp 150W（for White light）
●Xe lamp 150W Power supply(for White light）
●Optical system for white light （Bulit-in AM1.5G filter）
●Color filter holder
●Sample compartment
●Source meter

●Lock-in amplifier
●Si Photo diode detector(for monochromatic light )
●TP unit
●Si detector holder

●Si Photo diode detector(for white light)

●Cable for solar cell(XLR-Alligator clip)
●Interface unit
●Note PC
●Instruction Manual
 

 

Option

 

●Various sample holders

●Automatic filter switching mechanism for white bias(ND filter / color Filter)

 

 

Dimensions

 

●Power：AC100V  ±10V  50/60Hz   20A
●Main unit：Approx.W1750×Ｄ950×H1460mm
●Weight：Approx.400Kg

 

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