제주장학재단

Specifications 

Spectral response measurement by constant energy irradiation

 - The light intensity is adjusted with a continuous density variable ND filter, and constat 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 under white light or color bias light. Bias voltage can be set.

Measurement of quantum efficiency by constat photon irradiation

 - The light intensity is adjusted with a continuous density variable ND filter, and constant photon

   light is irradiated. The quantum efficiency 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 characteristics measurement

 - The cell characteristics can be measured with whit 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 efficiency.

Measurement Data

The data shows external quantum efficiency (EQE)

measurement  data of a Ge photo diode detector. 

With a constant photon of 1 x 10¹⁴Photon/cm²,

the measurement can be performed with excellent 

SN in the wavelength range of 300 to 1700 nm.

The data shows EQE measurement of two-junction solar cells

consisting of crystalline silicon and amorphous silicon. 

By using color filters, it is possible to measure EQE of each of the

top and bottom cells.

Spectral response data of polycrystalline Si

The spectral response in the long wavelengths range 

differs with (blue graph) and without (red graph) white bias. 

Under simulated sunlight irradiation, you can see that the 

spectral response characteristics are different.

Standard Configuration

●Xe lamp 500W ( for monochromatic light )

●Xe lamp 500W Power supply ( for monochromatic light )

●Halogen lamp 400W ( for monochromatic light )

●Halogen lamp 400W Power supply ( for monochromatic light )

●Light condensing optical system ( for 2 light sources type )

●Monochromator

●Grating　600 line/mm brazed at 300nm

●Grating　600 line/mm brazed at 500nm

●Grating　600 line/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 ( Built-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 (XRY- Alligator clip )

●Interface unit

●Note PC

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