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Dye-sensitized Solar Cells

Certain photovoltaic cell types are suited to be investigated with the impedance spectroscopy method. In particular spectroscopy permits analysing the frequency response of the cells and to extract the parameters of the equivalent circuit model. This also permits to determine the regimes in which the investigated cells provide their best performance (e.g. efficiency). This application focuses on dye-sensitized solar cells (DSC) which are a promising candidate for cost-efficient energy conversion.

Applications: photovoltaics, solar cells, impedance spectroscopy, equivalent ciruit model fitting
Objectives: perform electrical impedance spectroscopy to obtain the equivalent circuit model of DSCs and effectively determine the efficiency of various dyes.
Benefits: single-box system comprising impedance measurement, frequency sweeps, parameter sweeps, cole-cole plots and many more impedance spectroscopy related features.
Related products: HF2LI Lock-in Amplifier, HF2LI-MF Multi-frequency option, HF2TA Current Amplifier

HF2LI Electrical Impedance Measurement Setup

Key Features of the HF2LI Lock-in Amplifier for this Application

  • 4-point probe measurement unit
  • Measurement range from sub Hertz to 50 MHz
  • External pre-amplifier for current measurement close to the device under test
  • Built-in frequency and parameter (e.g. voltage) sweeps
  • Auxiliary outputs for biasing and offset generation
  • Built-in analog signal adder

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