In all-solution-processed quantum dot light-emitting diodes (QD-LEDs), zinc oxide nanoparticles (ZnO NPs) have been one of the most widely used electron transport layer materials. However, the high electron mobility and abundant surface defects of ZnO NPs usually entail not only charge imbalance in the QDs, but also exciton quenching at the QDs/ZnO interface. To overcome the shortcomings, a strategy is proposed by employing cross-linkable organics (isomeric TV-TmPY or TV-T2T) as an electron regulation layer (ERL) in inverted QD-LEDs. The spin-coated RGB QD-LEDs with TV-T2T inserts exhibit less sensitivity to interlayer thickness and great performance enhancements, with EQEs up to 20.2% for the red devices, 15.3% for the green devices, and 9.1% for the blue devices. The inkjet-printed RGB QD-LEDs with TV-T2T inserts also achieve EQEs of 18.4%, 13.3%, and 5.6%, respectively, representing the highest reported performance for inkjet-printed inverted QD-LEDs to date.

在全溶液处理的量子点发光二极管（QD-LED）中，氧化锌纳米粒子（ZnO NP）是最广泛使用的电子传输层材料之一。然而，ZnO NPs 的高电子迁移率和丰富的表面缺陷通常不仅会导致 QD 中的电荷不平衡，还会导致 QDs/ZnO 界面处的激子猝灭。为了克服这些缺点，提出了一种策略，采用可交联有机物（同分异构 TV-TmPY 或 TV-T2T）作为倒置 QD-LED 中的电子调节层 (ERL)。带有 TV-T2T 插入物的旋涂 RGB QD-LED 对层间厚度的敏感性较低，并且性能显着增强，红色器件的 EQE 高达 20.2%，绿色器件为 15.3%，蓝色器件为 9.1%。带有 TV-T2T 插入件的喷墨印刷 RGB QD-LED 的 EQE 也分别达到 18.4%、13.3% 和 5.6%，代表迄今为止喷墨印刷倒置 QD-LED 报告的最高性能。