Blue-purple light or blue light excitation fluorophor, preparation method thereof, and packaged white light diode

The invention belongs to the technical field of photoelectric display materials and devices, which relates to a process for manufacturing phosphor excited by royal purple light or blue light and a white diode which is produced by encapsulating the phosphor and a chip. The components of the phosphor includes Sr3-a-bBaaSi1-cO5: bD, cE, dF and eG, wherein D is divalent Eu, E is trivalent Ce, F is element B, G is univalent Li, and a, b, c, d, and e are atom mole numbers, and number range is that 0.0<=a<=0.2, 0.0<=b<=0.2, 0.0<=c<=0.2, 0.0<=d<=0.2 and 0.0<=e<=0.2. According to the components of the phosphor, a compound silica sol is prepared for processing spray granulation to gain xerogel particles, and phosphor particles are gained by microwave high-temperature heating the xerogel particles. The employment of the components of the phosphor and the process for preparation ensures the easy regulating of the size, appearance, optical spectrum, brightness and luminous efficiency of the phosphor particles, thereby realizing mass production. The white diode is gained by encapsulating the phosphor particles and the royal purple light or blue light GaN (Gallium nitride) base chip.