Sökning: WFRF:(Liu Yongfeng) >
Capping ligand engi...
Capping ligand engineering of cadmium-free AIZS quantum dots toward bright electroluminescent light-emitting diodes by all-solution process
-
- Liu, Yongfeng (författare)
- College of Physical Science and Technology & Microelectronics Industry Research Institute, Yangzhou University, Yangzhou, China
-
- Wang, Xinyi (författare)
- College of Physical Science and Technology & Microelectronics Industry Research Institute, Yangzhou University, Yangzhou, China
-
- Gao, Zhaoju (författare)
- College of Physical Science and Technology & Microelectronics Industry Research Institute, Yangzhou University, Yangzhou, China
-
visa fler...
-
- Yu, Wenbin (författare)
- College of Physical Science and Technology & Microelectronics Industry Research Institute, Yangzhou University, Yangzhou, China
-
- Yang, Jinpeng (författare)
- College of Physical Science and Technology & Microelectronics Industry Research Institute, Yangzhou University, Yangzhou, China
-
- Xu, Feng (författare)
- College of Physical Science and Technology & Microelectronics Industry Research Institute, Yangzhou University, Yangzhou, China
-
- Pei, Wei (författare)
- College of Physical Science and Technology & Microelectronics Industry Research Institute, Yangzhou University, Yangzhou, China
-
- Wang, Jia (författare)
- Umeå universitet,Institutionen för fysik
-
- Zhou, Min (författare)
- College of Physical Science and Technology & Microelectronics Industry Research Institute, Yangzhou University, Yangzhou, China
-
visa färre...
-
(creator_code:org_t)
- 2024
- 2024
- Engelska.
-
Ingår i: Advanced Materials Interfaces. - : Wiley-VCH Verlagsgesellschaft. - 2196-7350.
- Relaterad länk:
-
https://doi.org/10.1...
-
visa fler...
-
https://umu.diva-por... (primary) (Raw object)
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- Cadmium-free AgInZnS (AIZS) quantum dots (QDs) have garnered significant research interest for applications in light-emitting diodes (LEDs); however, their performance remains limited by insulating long-chain ligands. In this study, highly fluorescent orange-emitting AIZS QDs are synthesized by replacing long-chain 1-dodecanethiol (DDT) with short-chain 1-octanethiol (OTT), achieving photoluminescence quantum yields of up to 80% in solution and 60% in film. The incorporation of OTT in combination with oleic acid and oleylamine as co-capping ligands enabled excellent dispersion of the QDs in non-polar solvents. The resulting OTT-capped AIZS QDs exhibited improved film smoothness and reduced nonradiative recombination. Furthermore, all-solution-processed QD light-emitting diodes (QLEDs) are fabricated comprising indium tin oxide/poly(3,4-ethylenedioxythiophene) polystyrene sulfonate/hole transporting layer/AIZS QDs/ZnO electron transporting layer/Al. The effects of OTT capping and the thickness of the AIZS emitting layer on device performance are systematically evaluated. As a result, the QLEDs demonstrated enhanced luminance and current efficiency, reaching 515 cd m−2 and 0.4 cd A−1 respectively, representing improvements of over 50% and 33% compared to devices utilizing DDT-capped AIZS QDs. This study presents a facile and effective approach for developing high-brightness AIZS QLEDs.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- cadmium-free AgInZnS quantum dots
- ectroluminescent light-emitting diodes
- ligand engineering
- optimization of functional layers
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas