Photon-Electron Conversion Efficiency Tester

The spectral response IPCE, quantum efficiency QE, spectral transmittance of the sample cell, quantum efficiency and photocurrent under the spectral response of photoelectrochemical and photocatalytic research have realized DC and AC analysis, primary cell analysis, photoelectrochemical experiment analysis, etc.

The radiation energy of the light source is different at different wavelengths, and the responsivity of the detector is also different at different wavelengths. Therefore, the measured response current will also be quite different.

The system adopts the correlation detection method, which uses the time correlation of the signal to extract the periodic signal buried in the noise. The specific method is: the light source is modulated by a chopper into a periodic signal with a fixed frequency (reference frequency), then the detector also outputs an electrical signal with the same frequency, and the electrical signal containing the reference frequency is detected through a lock-in amplifier, while other frequency signals (noise) are suppressed, thereby improving the signal-to-noise ratio of the system and ensuring measurement accuracy.

Sample Requirements

The metal thickness is at least greater than 0.5 mm, and the side length or diameter is 2-5 cm.
The non-metal thickness is at least greater than 1 mm, and the side length or diameter is 2-5 cm.
Two copies of each sample need to be prepared.
Please contact the technical teacher to confirm the test requirements before placing an order.

Application

Measure photoelectric conversion efficiency during photoelectrochemical reactions
I-V, I-t and V-t tests of electrochemical reactions
Study on the effect of light on electrochemical behavior of electrode materials
Research on photoelectric synergistic catalytic reaction