材料科学
量子点
纳米晶
镍
胶体
二极管
光电子学
发光二极管
纳米技术
纳米颗粒
化学工程
冶金
工程类
作者
Woon Ho Jung,Byong Jae Kim,Mahnmin Choi,Hyeonjun Lee,Hyunjin Cho,Yong Woo Kwon,Yeongho Choi,H Lee,Jin‐Ha Yoon,K.-Y. Lee,Sang Ho Oh,Seong‐Yong Cho,Doh C. Lee,Sohee Jeong,Jaehoon Lim
标识
DOI:10.1002/adma.202410441
摘要
Colloidal quantum dot (QD)-based light-emitting diodes (QD-LEDs) have reached the pinnacle of quantum efficiency and are now being actively developed for next-generation displays and brighter light sources. Previous research has suggested utilizing inorganic hole-transport layers (HTLs) to explore brighter and more stable QD-LEDs. However, the performance metrics of such QD-LEDs with inorganic HTLs generally lag behind those of organic-inorganic hybrid QD-LEDs employing organic HTLs. In this study, colloidal NiMgO nanocrystals (NCs) with spatially controlled Mg are introduced as HTLs for realizing efficient and stable all-inorganic QD-LEDs. During the co-condensation of Ni and Mg precursors to produce valence band-lowered NiMgO NCs, incorporating ≈2% Mg into the NiO lattice creates additional Ni vacancies (V
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