Figure S9. Luminescence measurement (total emission spectral, not spectral resolved): Opaque SPE, photomultiplier tube above the SPE. Light source is not shown.

From

Spectroelectrochemistry of Electrochromic and Electroluminescent Substances with Screen-Printed Electrodes and with an Optically Transparent Platinum Mesh Electrode

Achim Habekost

World Journal of Chemical Education. 2020, 8(2), 71-86 doi:10.12691/wjce-8-2-3