Blue Light Emitting Phosphors for Ultraviolet Ray and Making Process theirof and Light Emitting Device

摘要

The present invention for ultraviolet ray-excited blue phosphor, the production method and the production method of the phosphor and the light emitting device using the same. It relates to, alkali (barium oxide, calcium oxide, magnesium oxide) a silicate as a matrix and europium (Eu) as an activator was added to make up the sikieo for ultraviolet ray-excited blue phosphor represented by general formula (1), which is the process of making a phosphor green light-emitting properties in a conventional manufacturing process through the final reduction process in the former stage of atmospheric air or oxygen or in a reducing process temperature similar to the temperature range of 1200 ~ 1350 in nitrogen atmosphere to perform the heat treatment step, one more additional It will indicate that the Southern phosphor that emits blue light can be changed. Phosphor of the present invention prepared according to this method is a main peak is 453nm, the light emission efficiency due to the phosphor to show a broad spectrum in the blue wavelength range for a long wavelength ultraviolet light-emitting device (LED) and a UV lamp (Lamp) of 410nm ~ 630nm which will be applied to. ; [Formula 1] ; Ba _3-xy A _y MgSi ₂ O ₈ : Eu _x ; Here, x is 0 x 1, y is 0 & . The y 2, A is = Ca, Sr