Abstract Using the secondary properties of inorganic material such as electron multiplication and acceleration, we discovered the cathodoluminescence-like (CL-like) emission. Now, using heterojunction and brightness waveform we investigated the temporary properties of the two peaks in CL-like emission. Further we found the identity of phase relation of luminescence relative to sinusoidal voltage for two different unsymmetrical devices and revealed the existence of CL-like excitation and the mutual enhancement of CL-like emission and organic electroluminescence. These processes are mutually compensatory additive and one strengthening the others. Choosing appropriate material and structural parameters might control the luminescence properties.