What is the mechanism of pr3+ activation?

The transition of 4f electrons of rare earth ions between different energy levels reflects the absorption and emission spectra of rare earth ions in the matrix. When the electron transitions from the ground state or the lower energy level to the higher energy level, it is necessary to absorb the excited energy. On the contrary, when the transition from the higher energy level to the lower energy level or ground state, the emission of light will be produced, which is the basic principle of the luminescence of rare earth ions.

It can be seen that the luminescence characteristics of rare earth ions are closely related to the energy level transition process. The electron layer structure of pr °is [Xe] 4f, which is the energy level of rare earth Pr+4f configuration. The energy level transition of Pr3 + is relatively rich.

Its luminescence spectrum has the characteristics of multiple spectral lines and D _ 2. →The transition of H4 produces blue light, green light and red light, respectively. The luminescence color and intensity of pr ~ (3 +) are closely related to the crystal structure of the substrate. It has attracted the interest of researchers to explore the red phosphors used in Pr3 + doped white LED.

If you want to know more, our website has product specifications for the LEDs, you can go to Allicdata Electronics to get more information.