Liquid-encapsulated quantum dot for enhanced UV and thermal stability of quantum dot color conversion films

Liu, Ronghuan1,2,3,4; Fang, Fan1,2,3,4; Liu, Pai1,2,3,4; Duan, Xijian1,2,3,4; Wang, Kai1,2,3,4; Sun, Xiao Wei1,2,3,4

2024-09-01

10.1007/s12274-024-6971-0

NANO RESEARCH   影响因子和分区

1998-0124

1998-0000

Encapsulation is a widely recognized method for enhancing the stability of colloidal quantum dots (CQDs). However, traditional encapsulation methods for solid-state materials expose encapsulated CQDs to risks such as ligand loss and poor dispersion. Additionally, these encapsulated CQDs still face the risk of aging due to surface ligand bond breakage under high-energy radiation. In this study, we found that quantum dots in solution exhibited enhanced ultraviolet (UV) tolerance compared to their counterparts in solid form under an inert atmosphere. We attribute this enhancement to improved ligand retention and self-healing of quantum dots in solution. Herein, we introduce a novel method for fabricating liquid-encapsulated quantum dot (LEQD) color conversion films. This technique leverages the self-healing capability of ligands in liquid-state quantum dots to enhance the UV and thermal stability of the quantum dot color conversion films. Experimental results demonstrate that LEQD films exhibit better resistance to UV radiation and high temperatures than solid-encapsulated quantum dot (SEQD) color conversion films. After 400 h of exposure to 100 mW blue light-emitting device (LED) light at 60 degrees C and 90% humidity, the brightness of LEQD film retained 90% of its initial level. This liquid-state quantum dot encapsulation approach offers a promising pathway for developing more durable quantum dot color conversion films.

liquid encapsulation quantum dots stability quantum dot color conversion film

SCI

英语

第一 ; 通讯

National Key Research and Development Program of China["2022YFB3602903","2021YFB3602703","2022YFB3606504"] ; Guangdong University Key Laboratory for Advanced Quantum Dot Displays and Lighting[2017KSYS007] ; Shenzhen Key Laboratory for Advanced Quantum Dot Displays and Lighting[ZDSYS201707281632549] ; Shenzhen Science and Technology Program[JCYJ20220818100411025] ; Shenzhen Development and Reform Commission[XMHT20220114005] ; High level of special funds[G03034K002] ; Shenzhen Key Laboratory for Deep Subwavelength Scale Photonics[ZDSYS20220527171201003]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied

WOS:001314203800001

TSINGHUA UNIV PRESS

Web of Science

1.Southern Univ Sci & Technol, Inst Nanosci & Applicat, Shenzhen 518055, Peoples R China
2.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China
3.Southern Univ Sci & Technol, Key Lab Energy Convers & Storage Technol, Minist Educ, Shenzhen 518055, Peoples R China
4.Southern Univ Sci & Technol, Shenzhen Key Lab Adv Quantum Dot Displays & Lighti, Shenzhen 518055, Peoples R China

Liu, Ronghuan,Fang, Fan,Liu, Pai,et al. Liquid-encapsulated quantum dot for enhanced UV and thermal stability of quantum dot color conversion films[J]. NANO RESEARCH,2024.

Liu, Ronghuan,Fang, Fan,Liu, Pai,Duan, Xijian,Wang, Kai,&Sun, Xiao Wei.(2024).Liquid-encapsulated quantum dot for enhanced UV and thermal stability of quantum dot color conversion films.NANO RESEARCH.

Liu, Ronghuan,et al."Liquid-encapsulated quantum dot for enhanced UV and thermal stability of quantum dot color conversion films".NANO RESEARCH (2024).