How do luminescent materials work?

Luminescent materials are capable of transforming certain types of energy into electromagnetic radiation, which means that in response to a specific stimulus, these materials emit light typically within the ultraviolet (UV) to the infrared (IR) spectral region [1, 2].

Can persistent luminescent phosphors store light energy in advance?

Nature Materials 22, 289–304 (2023) Cite this article Persistent luminescent phosphors can store light energy in advance and release it with a long-lasting afterglow emission.

What are persistent luminescent materials?

The persistent luminescent materials are a class of photo-luminescent materials. When excited by light irradiation, the persistent luminescent materials absorb light energy and store in the matrix. After the excitation stops, the stored energy will be gradually released in the form of light emission, and this luminescence lifetime can last long.

What are some examples of luminescent materials?

One example of materials with intriguing luminescent phenomena is PersL materials, which have aroused much interest from researchers [6, 12, 13]. These materials have the ability to store energy in their defect (trap) centers and release it gradually by emitting light after the removal of the excitation source [6, 12, 14].

How does a material store energy in a defect center?

These materials have the ability to store energy in their defect (trap) centers and release it gradually by emitting light after the removal of the excitation source [6, 12, 14]. This phenomenon is commonly designated as afterglow.

How does self luminous wood composite reduce energy consumption?

In addition, self-luminous wood composite has long afterglow time (about 11 h), which can absorb and store visible and ultraviolet light, and release green light in the dark ( Fig. 1 b). The self-luminous wood composite can store both thermal energy and light energy, thus reduce energy consumption.