Search: id:"swepub:oai:DiVA.org:umu-205540" >
The influence of th...
The influence of the capping ligands on the optoelectronic performance, morphology, and ion liberation of CsPbBr3 perovskite quantum dots
-
- Liu, Yong-feng (author)
- Umeå universitet,Institutionen för fysik,College of Physical Science and Technology, Yangzhou University, Yangzhou, China; Microelectronics Industry Research Institute, Yangzhou University, Yangzhou, China
-
- Tang, Shi (author)
- Umeå universitet,Institutionen för fysik
-
- Gao, Zhaoju (author)
- College of Physical Science and Technology, Yangzhou University, Yangzhou, China
-
show more...
-
- Shao, Xiuwen (author)
- College of Physical Science and Technology, Yangzhou University, Yangzhou, China
-
- Zhu, Xiaoling (author)
- College of Physical Science and Technology, Yangzhou University, Yangzhou, China
-
- Ràfols-Ribé, Joan (author)
- Umeå universitet,Institutionen för fysik
-
- Wågberg, Thomas, 1971- (author)
- Umeå universitet,Institutionen för fysik
-
- Edman, Ludvig, 1967- (author)
- Umeå universitet,Institutionen för fysik
-
- Wang, Jia (author)
- Umeå universitet,Institutionen för fysik
-
show less...
-
(creator_code:org_t)
- Springer Nature, 2023
- 2023
- English.
-
In: Nano Reseach. - : Springer Nature. - 1998-0124 .- 1998-0000. ; 16:7, s. 10626-10633
- Related links:
-
https://doi.org/10.1...
-
show more...
-
https://umu.diva-por... (primary) (Raw object)
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
show less...
Abstract
Subject headings
Close
- Perovskite quantum dots (PeQDs) endowed with capping ligands exhibit impressive optoelectronic properties and enable for cost-efficient solution processing and exciting application opportunities. We synthesize and characterize three different PeQDs with the same cubic CsPbBr3 core, but which are distinguished by the ligand composition and density. PeQD-1 features a binary didodecyldimethylammonium bromide (DDAB) and octanoic acid capping ligand system, with a high surface density of 1.53 nm−2, whereas PeQD-2 and PeQD-3 are coated by solely DDAB at a gradually lower surface density. We show that PeQD-1 endowed with highest ligand density features the highest dispersibility in toluene of 150 g/L, the highest photoluminescence quantum yield of 95% in dilute solution and 59% in a neat film, and the largest core-to-core spacing in neat thin films. We further establish that ions are released from the core of PeQD-1 when it is exposed to an electric field, although it comprises a dense coating of one capping ligand per four surface core atoms. We finally exploit these combined findings to the development of a light-emitting electrochemical cell (LEC), where the active layer is composed solely of solution-processed pure PeQDs, without additional electrolytes. In this device, the ion release is utilized as an advantage for the electrochemical doping process and efficient emissive operation of the LEC.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Keyword
- CsPbBr3 quantum dots
- capping ligand
- ion liberation
- light-emitting electrochemical cell
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database
- By the author/editor
-
Liu, Yong-feng
-
Tang, Shi
-
Gao, Zhaoju
-
Shao, Xiuwen
-
Zhu, Xiaoling
-
Ràfols-Ribé, Joa ...
-
show more...
-
Wågberg, Thomas, ...
-
Edman, Ludvig, 1 ...
-
Wang, Jia
-
show less...
- About the subject
-
- ENGINEERING AND TECHNOLOGY
-
ENGINEERING AND ...
-
and Materials Engine ...
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Physical Science ...
-
and Atom and Molecul ...
- Articles in the publication
-
Nano Reseach
- By the university
-
Umeå University