Color-Tunable Hybrid White Organic Light-Emitting Diodes with Double Interlayers

• 作者: Chunhong Gao Fuxing Yu Xin Zeng Xingjuan Ma Yue Zhang Ziyang Xiong Zuhong Xiong
• 来源期刊: 光学与光子学期刊(英文)
• 学科: 工学
• 关键词: HYBRID White Organic Light-Emitting Diode Color-Tunable SINGLET EXCITON Triplet EXCITON Phosphor
• 年，卷（期）: 2017,（8）
• 页码范围: 99-105
• 页数: 7页
• 分类号: TN3

摘要

An efficient color-tunable hybrid white organic light-emitting diode is demonstrated with double interlayers of 2,7-bis(carbazol-9-yl)-9,9-ditoylfluo- rene/2-(diphenylphosphoryl) spiroflu-orene (DMFL-CBP/SPPO1) inserted between blue fluorescent and yellow phosphorescent-emitting layers, and exhibits Commission Internationale de l’Eclairage (CIE1931) ranging from warm white (0.4368, 0.4497) to cool white (0.2781, 0.2896) with driving current density from 0.2 to 40 mA/cm2. The recombination of singlet and the triplet excitons in blue fluores-cent-emitting layer and yellow phosphorescent-emitting layer, respectively, can be modulated by both the thickness of these double interlayers and the applied current densities.