Recent advances in quantum dot-based light-emitting devices: Challenges and possible solutions

Yang, Zhiwen1; Gao, Mengyu1; Wu, Weijie1; Yang, Xuyong2; Sun, Xiao Wei3; Zhang, Jianhua2; Wang, Hung-Chia4; Liu, Ru-Shi4,5,6; Han, Chang-Yeol7; Yang, Heesun7; Li, Wanwan1

2019-04

10.1016/j.mattod.2018.09.002

Materials Today   影响因子和分区

1369-7021

1873-4103

Colloidal quantum dots (QDs) have been generating substantial interest due to their unique properties, which include high quantum efficiency, high color purity, low-cost solution processability, as well as an easily tunable emission wavelength. They are considered to be alternative emissive materials for next-generation light-emitting diodes (LEDs) in lighting and display applications. However, there are several factors that limit the performance of QLEDs, such as nonradiative recombination, energy transfer, and field-induced quenching. Additionally, past research has primarily focused on Cd-based quantum dots, which also limits their commercialization. Due to the development of nanotechnology, tremendous progress has been made regarding the synthesis methods of QDs, the understanding of QD properties, the application of QD in LEDs, and exploring the challenges and possible solutions of high efficiency. In this review, we begin with a general introduction of the development of organic LEDs, inorganic LEDs, and QLEDs. Subsequently, we demonstrate the challenges of QDs for high-efficiency LEDs, and describe possible solutions including interface engineering, inter-dots distance control, large Stokes shift QD designing, encapsulation engineering, device architecture designing, as well as heavy metal free QD exploring. Finally, we conclude with a discussion regarding the future prospects of QLEDs.

SCI ; EI

英语

其他

National Research Foundation of Korea (NRF) grant[2017R1A2B3008628] ; National Research Foundation of Korea (NRF) grant[2015R1A6A1A03031833]

Materials Science

Materials Science, Multidisciplinary

WOS:000462777700023

ELSEVIER SCI LTD

20184205946731

Energy transfer ; Heavy metals ; Nanocrystals ; Quantum efficiency ; Semiconductor quantum dots ; Sols

Metallurgy and Metallography:531 ; Semiconductor Devices and Integrated Circuits:714.2 ; Nanotechnology:761 ; Chemical Products Generally:804 ; Quantum Theory; Quantum Mechanics:931.4

Web of Science

1.Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China
2.Shanghai Univ, Key Lab Adv Display & Syst Applicat, Minist Educ, Shanghai 200072, Peoples R China
3.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518023, Guangdong, Peoples R China
4.Natl Taiwan Univ, Dept Chem, Taipei 106, Taiwan
5.Natl Taipei Univ Technol, Dept Mech Engn, Taipei 106, Taiwan
6.Natl Taipei Univ Technol, Grad Inst Mfg Technol, Taipei 106, Taiwan
7.Hongik Univ, Dept Mat Sci & Engn, Seoul 04066, South Korea

Yang, Zhiwen,Gao, Mengyu,Wu, Weijie,et al. Recent advances in quantum dot-based light-emitting devices: Challenges and possible solutions[J]. Materials Today,2019,24:69-93.

Yang, Zhiwen.,Gao, Mengyu.,Wu, Weijie.,Yang, Xuyong.,Sun, Xiao Wei.,...&Li, Wanwan.(2019).Recent advances in quantum dot-based light-emitting devices: Challenges and possible solutions.Materials Today,24,69-93.

Yang, Zhiwen,et al."Recent advances in quantum dot-based light-emitting devices: Challenges and possible solutions".Materials Today 24(2019):69-93.