2020
DOI: 10.1021/acsanm.0c01204
|View full text |Cite
|
Sign up to set email alerts
|

Core–Shell CsPbBr3@CdS Quantum Dots with Enhanced Stability and Photoluminescence Quantum Yields for Optoelectronic Devices

Abstract: Optimizing the stability and improving photoluminescence quantum yields (PLQYs) of all-inorganic halide perovskite nanocrystals has become an urgent and challenging task to promote its application in the field of optoelectronic devices. Lead halide perovskite CsPbX3 (X = Br, I, Cl) often suffers from many serious issues, mainly from changes in the environment (thermal, chemical, light excitation). To better solve these thorny problems, two different core–shell heterostructures were proposed to protect CsPbX3, … Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1
1

Citation Types

0
50
0

Year Published

2021
2021
2024
2024

Publication Types

Select...
6

Relationship

2
4

Authors

Journals

citations
Cited by 58 publications
(52 citation statements)
references
References 56 publications
0
50
0
Order By: Relevance
“…25 The heterostructure with type I or type II band alignment offers strategies to enhance emission of the core QD or improve charge separation within the heterostructure. Although a few reports exist to-date of capping CsPbBr 3 QDs with SiO 2 , 26 CdS, 27 or ZnS 28,29 shells, none of these heterostructures have shown a major leap in achieving improved performance with a long-term stability in polar solvents. Ambiguity still exists whether the added material forms a continuous shell around the perovskite core or forms smaller discontinuous islands on the surface.…”
Section: Introductionmentioning
confidence: 99%
“…25 The heterostructure with type I or type II band alignment offers strategies to enhance emission of the core QD or improve charge separation within the heterostructure. Although a few reports exist to-date of capping CsPbBr 3 QDs with SiO 2 , 26 CdS, 27 or ZnS 28,29 shells, none of these heterostructures have shown a major leap in achieving improved performance with a long-term stability in polar solvents. Ambiguity still exists whether the added material forms a continuous shell around the perovskite core or forms smaller discontinuous islands on the surface.…”
Section: Introductionmentioning
confidence: 99%
“…In addition, convenient synthesis, low production costs, and processability of the solution have also made this family highly prized in the manufacture of commercial optoelectronic devices. [ 8,9 ] In the past few years, colloidal CsPbX 3 (X = Br, I, Cl) perovskite nanocrystals (PNCs) have also been dazzling because of their excellent photophysical properties, mainly including high photoluminescence quantum yields (PLQY), [ 10–12 ] tunable emission wavelength, [ 13,14 ] narrow emission bandwidth, [ 15,16 ] and so on. [ 17,18 ] However, for current practical application of PNCs in the field of optoelectronic devices, the thermal change brought about by the long‐term operation of the device will become its major obstacle.…”
Section: Introductionmentioning
confidence: 99%
“…0D perovskites with high exciton binding energy and wide bandgap have higher structural stability in the ambient atmosphere than 3D perovskite NCs. [ 37,45,95,96 ] Jia et al. [ 37 ] used a seeded growth approach to synthesize core/shell CsPbBr 3 /Cs 4 PbBr 6 perovskite NCs.…”
Section: Synthesis and Classification Of Core/shell Structured Perovskite Ncsmentioning
confidence: 99%
“…0D perovskites with high exciton binding energy and wide bandgap have higher structural stability in the ambient atmosphere than 3D perovskite NCs. [37,45,95,96] Jia et al [37] used a seeded growth approach to synthesize core/shell CsPbBr 3 /Cs 4 PbBr 6 perovskite NCs. The Cs 4 PbBr 6 shell was grown by successively adding zinc bromide and cesium oleate into the CsPbBr 3 seed solution at T = 70 °C.…”
Section: Perovskite Derivative Shellmentioning
confidence: 99%
See 1 more Smart Citation