Light-emitting device with white light conversion layer, electronic equipment and preparation method

• Main Authors: WANG JIANGBO, CHEN-ZHANG XIAOXIONG, ZHANG SHUN, HU RENHAO, GONG YIPIN
• Format: Patent
• Language: Chinese; English
• Published: 22.08.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; NANOTECHNOLOGY; PERFORMING OPERATIONS; SEMICONDUCTOR DEVICES; SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; TRANSPORTING

The invention provides a light-emitting device with a white light conversion layer, electronic equipment and a preparation method, and belongs to the technical field of display. The light-emitting device comprises a light-emitting diode core particle and a white light conversion layer, the white light conversion layer comprises a CsPbBr3 perovskite nanocrystal layer and a CsPbI3 perovskite nanocrystal layer, and the CsPbBr3 perovskite nanocrystal layer and the CsPbI3 perovskite nanocrystal layer are both located on the light emitting surface of the light emitting diode core particle. The external quantum efficiency of the light-emitting device can be improved. 本公开提供了一种具有白光转换层的发光器件、电子设备及制备方法，属于显示技术领域。该发光器件，包括：发光二极管芯粒和白光转换层；白光转换层包括CsPbBr3钙钛矿纳米晶体层和CsPbI3钙钛矿纳米晶体层，CsPbBr3钙钛矿纳米晶体层和CsPbI3钙钛矿纳米晶体层均位于发光二极管芯粒的出光面。本公开能够提高发光器件的外量子效率。