Colloidal quantum-dots surface and device structure engineering for high-performance light-emitting diodes. Issue 2 (7th January 2017)

• Record Type: Journal Article
• Authors: Shang, Yuequn; Ning, Zhijun
• Is Part Of: National science review. Volume 4:Issue 2(2017:Mar.)
• Page Start: 170
• Page End: 183
• Publication Date: 2017-01-07
• Subjects: colloidal quantum dots -- light-emitting diodes -- surface engineering -- device architecture; Science -- Periodicals; 505
• DOI: 10.1093/nsr/nww097
• Languages: English
• ISSNs: 2095-5138

Abstract

Abstract: The application of colloidal quantum dots for light-emitting devices has attracted considerable attention in recent years, due to their unique optical properties such as size-dependent emission wavelength, sharp emission peak and high luminescent quantum yield. Tremendous efforts have been made to explore quantum dots for light-emission applications such as light-emitting diodes (LEDs) and light converters. The performance of quantum-dots-based light-emitting diodes (QD-LEDs) has been increasing rapidly in recent decades as the development of quantum-dots synthesis, surface-ligand engineering and device-architecture optimization. Recently, the external quantum efficiencies of red quantum-dots LEDs have exceeded 20.5% with good stability and narrow emission peak. In this review, we summarize the recent advances in QD-LEDs, focusing on quantum-dot surface engineering and device-architecture optimization.