The invention discloses a
white light LED (
Light Emitting Diode) capable of lighting by triggering carbon points through
blue light, and a preparation method thereof. The
white light LED comprises an insulating base, a bowl-shaped reflection mirror, a
blue light LED
chip and a lens, wherein the bowl-shaped reflection mirror is arranged on the insulating base; a heat conduction sheet is arranged between the bowl-shaped reflection mirror and the insulating base; the
blue light LED
chip is fixed in the bowl-shaped reflection mirror; the
silane functionalized carbon points are covered on the blue light LED
chip; the lens is arranged outside the
silicon bowl-shaped reflection mirror; a transparent sealing material is filled into the lens; organic multielement acid is fed into
silane liquid which is boiled and flows back under the protection of
nitrogen, so that the organic multielement acid is subjected to
pyrolysis so as to synthesize the
silane functionalized carbon points; the blue LED chip is fixed inside the bowl-shaped reflection mirror; the silane functionalized carbon points are coated on the blue LED chip and are cured; the lens is arranged outside the bowl-shaped reflection mirror; and the lens is filled with the transparent sealing material. The
white light LED and the preparation method can be beneficial for improving the
light emission efficiency, and the use stability and prolonging the service life of an LED.