The principle of photoinitiator is based on the process of light energy absorption and electron transfer. When a photoinitiator is exposed to a specific wavelength of light, some bonding electrons in its molecules are excited to a higher energy level. Electrons at this energy level can undergo light-induced electron transfer, which can trigger specific chemical reactions or physical effects. For example, in photography, a photoinitiator can be used to capture light and transform it into a visible image.

Photoinitiators also play an important role in laser technology. During the operation of the laser, a photoinitiator can be used to respond to the beam produced by the laser to produce a specific reaction. This reaction can be used to adjust the output power, wavelength and pulse width of the laser. The applications of photoinitiators in laser technology include optical communication, material processing and medical treatment.

In the field of photosensitive electronic materials, photoinitiators are widely used in the preparation of photoelectric conversion devices. Photoelectric conversion devices are able to convert light energy into electricity, so they play an important role in fields such as solar cells and photodetectors. The role of the photoinitiator in these devices is to absorb light energy and convert it into charged particles, which generate an electric current or voltage. This mechanism provides strong support for the performance of optoelectronic devices and promotes the development of light energy utilization technology.