Colloidal quantum dots are a type of important semiconductor nano-optoelectronic materials, featuring solution-based preparation, easy dispersion, tunable spectra, and high luminous efficiency. They can be combined with mainstream display technologies such as LCD, OLED, and Micro-LED, significantly improving the color quality of display devices, simplifying the manufacturing process, and are one of the important frontier technologies in the display field. Currently, backlit liquid crystal displays equipped with quantum dot optical films have achieved commercialization, with a market penetration rate of 5% in 2020 and increasing year by year. Pixelated quantum dot color conversion technology is considered the preferred technical route for reducing OLED display costs and solving the problems faced by Micro-LED displays, such as the lack of red LEDs and massive transfer. Quantum dot electroluminescent display technology is also developing rapidly, with the comprehensive performance of laboratory devices approaching that of commercial OLEDs. In 2020, TCL and BOE respectively exhibited 31-inch and 55-inch printed display prototypes. Quantum dot display has become one of the important fields that display enterprises are competing to invest in.
Representative Achievements:
1. Synthesis and Devices of II-VI Group Quantum Dots
> Synthesis of Large-Sized ZnSe Blue Light Quantum Dots Nat. Synth. 2023, 2, 296–304 (Jan 2023)
2. Patterned fabrication of perovskite quantum dots
> Preparation of perovskite quantum dot patterns by in-situ dissolution inkjet printing Adv. Funct. Mater. 2019, 29, 1903648 (Jul 2019, Cite: 119)
> Laser direct writing in situ to prepare perovskite quantum dot patterns ACS Photonics 2021, 8, 765−770 (Mar 2021)
> Preparation of high-resolution (2450 PPI) perovskite quantum dot patterns by in-situ direct lithography Nat. Commun. 2022, 13, 6713 (Nov 2022)
3. Synthesis and in-situ preparation of perovskite quantum dots
> Room-temperature ligand-assisted reprecipitation (LARP) synthesis of perovskite quantum dots ACS Nano 2015, 9, 4533−4542 (Mar 2015, Cite: 1916)
> In-situ Preparation of Perovskite Quantum Dot-Polymer Optical Films Adv. Mater. 2016, 28, 9163−9168 (Aug 2016, Cite: 594)
> In-situ preparationRbxCs1–xPbI3Red light calcium phosphate quantum dot optical film Adv. Funct. Mater. 2021, 31, 2008211 (Jan 2021, Cite: 58)
4. Perovskite electroluminescence
> In-situ LARP preparation of perovskite nanocrystals (green light EQE = 16.3%) ACS Nano 2018, 12, 8808−8816 (Aug 2018, Cite: 211)
> Phase distribution control of quasi-two-dimensional perovskite (blue light EQE = 8.8%) Nat. Commun. 2020, 11, 6428 (Dec 2020, Cite: 84)