Mini Photoelectric Spectrometer for photoelectric properties examination

Photocurrent and OCP measurements under illumination from LED Revolver.


Mini Photoelectric Spectrometer setup allows to apply various measurement techniques: chronoamperometry, voltammetry, cyclic voltammetry and the light intensity modulated photocurrent/photovoltage. Those techniques enables to examine the photoelectric dynamics of the sample. Samples may be investigated using two- or three-electrodes configuration.

Quantities measured by the instrument:

  • I-V characteristics of a sample under illumination,
  • Open Circuit Potential (OCP) as a function of light wavelength,
  • Photocurrent as a function of light intensity,
  • IPCE or EQE at wavelengths provided by the LED Revolver,
  • Surface Photovoltage (SPV),
  • Space Charge Region capacitance if a super-bandgap wavelength LED is present in the LED Revolver.

Measurement techniques:

  • Chronoamperometry,
  • Voltammetry,
  • Cyclic voltammetry,
  • Chopped illuminance and more.
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LED Revolver

  • 10 LED slots,
  • Default LED set: 365 nm, 385 nm, 405 nm, 450 nm, 520 nm, 590 nm, 630 nm, 740 nm, 840 nm, white (3000 K),
  • Custom LED selection available,
  • Typical electric power of LEDs: 3W,
  • Light intensity modulation: square, sinusoidal, triangle or ramp waveform with adjustable amplitude and bias light intensity,
  • Light modulation frequency range: 1 µHz ÷ 10 kHz,


  • Bias potential range: -5 V ÷ 5 V,
  • Current ranges: 10 nA, 100 nA, 1 µA, 10 µA, 100 µA, 1 mA, 10 mA,
  • Current resolution: from 1 pA to 100 nA (range dependent),


  • Maximum sampling rate: 1 kSample/s,
  • Connection with PC: via USB 2.0,

Electrochemical cuvette

  • Adapted for transparent and opaque samples,
  • Sample may be illuminated through the electrolyte or through the rear optical window,
  • PTFE container for electrolyte,
  • Reference electrode: Ag/AgCl,
  • Counter electrode: Pt.

The instrument may be extended with the Sample Chamber to screen the ambient light and electromagnetic fields.

exemplary results

I-V characteristics

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OCP versus light intensity

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3D map of I-V curves for different light intensities

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ACCESSORIES The following accessories are compatible with the product
Dummy cell
LED revolver
Light Calibrator
Platinum electrode
Silver chloride reference electrode
Sample Chamber
Universal cuvette
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