Full solution-processed heavy-metal-free mini-QLEDs for flexible display applications. Issue 35 (24th August 2022)

• Record Type: Journal Article
• Authors: Wang, Run; Xiang, Hengyang; Tu, Siyuan; Li, Yan; Zhou, Yihui; Zeng, Haibo
• Is Part Of: Nanoscale. Volume 14:Issue 35(2022)
• Page Start: 12736
• Page End: 12743
• Publication Date: 2022-08-24
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/d2nr03082a
• Languages: English
• ISSNs: 2040-3364

Abstract

Abstract : Heavy-metal-free flexible blue mini-QLEDs that meet the requirements of televisions, computers, and mobile phones, by electrode array technique combing with full solution process, have been successfully developed. Abstract : Micro/mini displays play an extremely significant role in the modern information society, which is treated as a promising technology for a range of applications. Here, utilizing the full solution process with the electrode array mask, we successfully achieved passive-matrix and active-matrix mini-quantum dot light-emitting diodes (PM/AM-m-QLEDs) based on heavy-metal-free blue ZnTeSe/ZnS QDs. The pixels per inch (PPI) of m-QLEDs fabricated in this study can reach 36, 90, 180, and 360, which meet the requirements of televisions, computers, and mobile phones. Moreover, by adjusting the electrodes, m-QLEDs achieved patterned display applications based on both flexible and solid substrates. These results imply that heavy-metal-free blue m-QLEDs show a wide display application potential, i.e., AM/PM displays. Given the low-cost advantage of solution-processed QDs, our proposed techniques could pave the way for low-cost displays.