1 results about "Excimer" patented technology

The invention discloses a high-color-rendering-index white light organic light-emitting device and a preparation method therefor. The device comprises a substrate, a positive electrode layer, an organic functional layer and a negative electrode layer from the bottom up in sequence; the organic functional layer comprises a hole transport layer, a blue light emitting layer and an electron transport layer from the bottom up in sequence; the blue light emitting layer is formed by the following two manners: (1) a host-guest doped structure formed by a host material doped with a blue fluorescent light emitting material, wherein the doping mass ratio of the blue fluorescent light emitting material is 1-20%; and (2) a non-doped structure which is formed by a single-layer host material close to the hole transport layer and a singe-layer blue fluorescent light emitting material close to the electron transport layer. According to the device, only one kind of the blue fluorescent light emitting material is adopted to generate blue light; in combination with the hole transport layer and the host material to form electroplex to generate orange light and red light so as to realize white light emission with high color rendering index; and meanwhile, the device structure and the preparation process are simplified, the production cost is lowered, and the spectrum stability of the device is improved.