Non-invasive treatment of psoriasis and skin rejuvenation using an akermanite-type narrow-band emitting phosphor.

Psoriasis is a non-contagious, long-lasting skin infection that affects many people around the world. Numerous therapeutic artificial treatments are available for the treatment of psoriasis, such as photodynamic therapy using broadband ultraviolet (UV) lamps, which has harmful effects on human skin. Likewise, the natural healing systems such as sunlight have a higher risk of sunburn and dangerous forms of skin cancer. Significant light emission of a specific wavelength (in UV range), phosphor-based devices demonstrate the effectiveness of treating psoriasis without damaging the skin. Gd 3+ -doped calcium magnesium silicate (Ca 2 MgSi 2 O 7 :Gd 3+ , CMS:Gd 3+ ) phosphor is one of the ideal phosphors that emits specific narrow UV wavelength for curing psoriasis, which is highly demanded in the field of dermatology. Photoluminescence analysis at room-temperature (~25 o C) shows that the synthesized CMS:Gd 3+ phosphor emits narrow-band UVB light with peak intensity at 314 nm. Comparative studies of the standard action spectrum of psoriasis to the emission spectrum of CMS:Gd 3+ phosphor show that the synthesized phosphor is the most suitable material to treat a variety of diseases, including psoriasis, vitiligo, type-1 diabetes, dental disease, sleep and mood disorders and other skin diseases.