Colloidal quantum-dots surface and device structure engineering for high-performance light-emitting diodes

• 来源期刊: 国家科学评论（英文版）
• 关键词: colloidal quantum dots light-emitting diodes surface engineering device architecture
• 年，卷（期）: 2017,（2）
• 页码范围: 170-183
• 页数: 14页
• 语种: 英文
• DOI: 10.1093/nsr/nww097

摘要

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.