公开(公告)号：US20240381682A1

公开(公告)日：2024-11-14

申请号：US18661790

申请日：2024-05-13

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sung Woo KIM ,  You Jung CHUNG ,  Dongchan KIM ,  Enjung KIM ,  Chan Su KIM ,  Hong Kyu SEO ,  ILYOUNG LEE ,  Sungwoo HWANG

IPC: H10K50/115 ,  C01G9/02 ,  H10K50/16 ,  H10K71/12

Abstract: An electroluminescent device, a method of manufacturing the same, and a display device including the same are provided. The method of manufacturing the electroluminescent device comprises disposing a light emitting layer including a semiconductor nanoparticle on a first electrode; depositing a composition including a zinc oxide nanoparticle containing a first metal onto the light emitting layer to provide an electron transport layer; and disposing a second electrode on the electron transport layer to provide the electroluminescent device. The first metal includes an alkaline earth metal, zirconium, tungsten, titanium, yttrium, aluminum, gallium, indium, tin, cobalt, vanadium, or a combination thereof. The zinc oxide nanoparticle has a particle size of 1 nanometer or more and 50 nanometers or less. Preparation of the zinc oxide nanoparticle includes contacting a first metal precursor, a zinc precursor, a base, and a metal carbonate in an organic solvent to form the zinc oxide nanoparticle.