Progress of QD in Display Technology and the Emergence of Autonomous Material Development

Colloidal quantum dots (QDs) are known as the most suitable candidates for luminescent materials due to their unique optical properties, including high color purity and quantum efficiency, and easily adjustable bandgap. Among them, InP QD has a disadvantage of being prone to oxidation and defects on the surface due to its high covalent bonding characteristics, which makes it difficult to develop. Despite this, in the past, Samsung decided to apply indium phosphide (InP) QD, which has significantly less toxicity, to commercial products. After much effort, various display products ranging from QD monitors to QD-OLED TVs have been produced and sold based on InP QD, starting with the launch of the first QLED TV in 2015. I will introduce how these InP QDs can be developed into QDs with high quantum efficiencies approaching almost 100% and high process stability, and how they can be produced identically without changing the material's properties from the lab to mass production. Additionally, I will also, briefly introduce how we have been using the autonomous material development system at SAIT to accelerate material development over the past few years.