Advances in Quantum Dot Printing Techniques for Light-Emitting Diode Applications

Abstract

Colloidal quantum dots (QDs) are promising materials for the next-generation displays, because of their excellent optical properties such as color tuneability, bright emissions, and extremely high color purity. For the practical applications of QD-displays, it is important to develop high-resolution QD printing methods that produce QD pixel arrays. Here, this review article highlights QD printing techniques for applications to light-emitting diodes. We provide an overview of the recent advances and challenges in three representative QD printing techniques: (i) photolithography, (ii) inkjet printing, and (iii) transfer printing. We also discuss how these methods have been applied to fabricate QD light-emitting diodes.