Historical Evolution and Current Status of Key Materials and Technologies in Inkjet-printed Quantum Dot Electroluminescent Displays
Colloidal semiconductors have garnered significant attention in academia and industry due to their unique nanoscale transport effects,self-luminous properties,and rheological characteristics compatible with large-ar-ea industrial printing processes.Inkjet printing,as an emerging technology,is expected to usher in a new generation of printable,large-area,high-performance patterned quantum dot light-emitting diodes(QLEDs).Nonetheless,the current preparation process of inkjet-printed QLEDs faces challenges related to interfacial erosion caused by improper quantum dots(QDs)ink formulation and reduced luminescence efficiency after film formation,leading to a signifi-cant performance gap compared to spin-coated devices.This review begins by outlining the fundamental concepts and development status of QDs display technology,followed by an analysis of the classification,principles,advantag-es,and disadvantages of the three inkjet printing technologies.It then introduces three types of QDs containing cadmium,lead,and cadmium-free materials,analyses their research progress in inkjet-printed QLEDs,and focuses on three typical strategies for achieving high-performance QLEDs using inkjet printing.Finally,this work looks for-ward to the development trends and promising prospects of inkjet-printed QLEDs.
万方数据
维普
