First-principles study of electronic properties of amine ligand-capped CsPbBr3 surface with organo-metallic alumina precursor treatment

Wang, Zhaojie; Liu, Zhang; Cao, Kun; Wen, Yanwei; Chen, Rong; Shan, Bin

doi:10.1016/j.apsusc.2022.154070

Cited by 9 publications

(3 citation statements)

References 50 publications

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“…It was found that TMA prefers to link the amine ligands and the QDs, rather than kick the ligands out. In another study, a benign and asymmetric aluminum precursor, namely methyl aluminum di-isopropoxide, was used to treat the QDs to avoid successive dissociation during the reaction with surface ligands, resulting in a nearly trap-state-free band structure of passivated QDs [83]. To evaluate the reactivity of the precursor on the substrate, a micro-kinetic method was developed to couple the adsorption energy and the reaction energy barrier with the aim of calculating the ALD reaction rate.…”

Section: Multi-scale Simulations Of the Ald Manufacturing Processmentioning

confidence: 99%

Atomic layer deposition in advanced display technologies: from photoluminescence to encapsulation

Chen,

Cao,

Wen

et al. 2024

Int. J. Extrem. Manuf.

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Driven by the growing demand for next-generation displays, the evolution of advanced luminescent materials with exceptional photoelectric properties, such as quantum dots and phosphors are accelerating rapidly. Nevertheless, the primary challenge confronting the practical applications of these luminescent materials lie in meeting high durability requirements. This perspective delves into atomic layer deposition (ALD) developed for stabilizing luminescent materials, which is employed in the fabrication of flexible display devices through material modification, surface and interface engineering, encapsulation, cross-scale manufacturing, and simulations. To satisfy low-cost, high-efficiency, and high-reliability manufacturing requirements, equipments such as spatial ALD and fluidized ALD have been developed. The strategic approach establishes the groundwork for the development of ultra-stable luminescent materials, highly efficient LEDs, and thin-film packaging. This significantly enhances their potential applicability in LED illumination and backlight displays, marking a notable advancement in the display industry.

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Section: Multi-scale Simulations Of the Ald Manufacturing Processmentioning

confidence: 99%

Atomic layer deposition in advanced display technologies: from photoluminescence to encapsulation

Chen,

Cao,

Wen

et al. 2024

Int. J. Extrem. Manuf.

Self Cite

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“…When conducting TEM tests on ZIF-8/PQD composites, in order for ZIF-8 to disperse sufficiently, the samples must be prepared by dispersing the material in water. However, the aqueous solvents can lead to the destruction of the OA and OAm ligand modifications on the surface of the PQDs, 17 resulting in a smaller size of PQDs as observed in Figure 4d. As shown in Figure S3, the fluorescence of PQDs was quenched and the size reduced when the PQDs were dispersed in water, which is consistent with the results in Figure 4d.…”

Section: Characterization Of Zif-8mentioning

confidence: 99%

“…However, the low lattice formation energy and ionic properties of PQDs make them susceptible to destruction under certain exposed environments (polar solvents, high temperatures, and oxygen, etc.) . By dispersing PQDs in a metal–organic framework (MOF) matrix, crystal aggregation-induced quenching is prevented and the PQDs are protected from adverse external environments, thereby improving stability. , In addition, the high porosity of MOFs provides sufficient space for guest molecules to permeate, enhancing the likelihood of interactions between guests and hosts. − However, this dispersion method on the MOF matrix will result in reduced detection sensitivity compared with using pure liquid PQDs.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Fluorescence Based on Slow Light Effect of ZIF-8 Photonic Crystals for Trace 2,4,6-Trinitrophenol Detection

Zhang,

Zheng,

Teng

et al. 2024

ACS Appl. Mater. Interfaces

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In response to growing concerns about public safety and environmental conservation, it is essential to develop a precise identification method for trace explosives. To improve the stability and detection sensitivity of perovskite quantum dots (PQDs) and address the issue of low porosity in traditional polymer-based photonic crystals (PhCs), this study proposed a PQD photoluminescence (PL) enhancement strategy based on the slow light effect of ZIF-8 PhCs for highly sensitive, selective, and convenient detection of 2,4,6-trinitrophenol (TNP). The slow light effect at the photonic band gap edge is the basis of amplifying the PL signal. PhCs were fabricated by the evaporation-induced self-assembly method. The diffraction wavelength overlapping the whole visible region was designed to match the emission wavelength of PQDs. Results showed that PhCs matching the PBG edge with PQDs' emission peak amplified the PL signal 11.3 times, significantly improving sensitivity for trace TNP detection with a limit as low as 2.52 nM. Moreover, there was a 13.3-fold enhancement of PQDs' fluorescence lifetime when the emission wavelength fell in the PBG range. The hydrophobic surface of ZIF-8 PhCs enhanced the PQDs' stability and moisture resistance. Furthermore, the selective quenching mechanism of TNP by the sensor was photoinduced electron transfer (PET) verified by DFT calculations and time-resolved PL decay dynamics measurements. This study demonstrated great potential for manipulating light emission enhancement by PhCs in developing efficient fluorescent sensors for trace environmental pollutant detection.

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Enhanced power conversion efficiency of perovskite solar cells using dopant-free carbon nanotubes-Spiro-OMeTAD

Jiang

Zheng

Qin

et al. 2023

Ceramics International

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First-principles study of electronic properties of amine ligand-capped CsPbBr3 surface with organo-metallic alumina precursor treatment

Cited by 9 publications

References 50 publications

Atomic layer deposition in advanced display technologies: from photoluminescence to encapsulation

Atomic layer deposition in advanced display technologies: from photoluminescence to encapsulation

Enhanced Fluorescence Based on Slow Light Effect of ZIF-8 Photonic Crystals for Trace 2,4,6-Trinitrophenol Detection

Enhanced power conversion efficiency of perovskite solar cells using dopant-free carbon nanotubes-Spiro-OMeTAD

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