Rapid and High-Efficiency Laser-Alloying Formation of ZnMgO Nanocrystals

Liu, Peisheng; Wang, Hao; Li, Xiaoming; Zeng, Haibo

doi:10.1038/srep28131

Cited by 15 publications

(3 citation statements)

References 34 publications

(45 reference statements)

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“…In order to accomplish TEM tests, the CsPbCl [26,27]. It is an obvious monotonic increase trend of d from 3.98 Å to 4.43 Å, suggesting a monotonic decreasing trend of 2θ for the same crystal plane according to Bragg's law [28]. This, indeed, is reflected in experimentally measured XRD patterns as in figure 2 To demonstrate the color-tunable flexible fluorescent film for lighting purposes from cold to warm white light, the fluorescent film is designed with multi-layer film structures using the above CsPbCl 1.58 Br 1.42 (blue emission) and CsPbBr 1.35 I 1.65 (orange emission) CPNC/PDMS flexible films.…”

Section: Resultsmentioning

confidence: 99%

Flexible, ultra-stable and color tunable fluorescent films based on all inorganic perovskite quantum dots embedded in polymer

et al. 2020

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Colloidal perovskite CsPbX3 (X = Cl, Br, I) nanocrystals (CPNCs)/polymers composites have attracted extensive attention due to their potential to be developed as flexible phosphor films for lighting applications. However, to maintain high quantum efficiency and photo stability of CPNCs in such composites remains a daunting challenge. Here, we have demonstrated a layered composite structure consisting of CPNCs and polydimethylsiloxane (PDMS) with multi-color emission and long-term stability. By tuning the molar ratio between CsPbCl1.58Br1.42 and CsPbBr1.35I1.65, flexible fluorescent films as down-converter layers with a high luminescent efficiency and a controllable color temperature spanning from 3194 K to 5901 K have been demonstrated. Furthermore, due to embedding inside such composites, the quantum efficiency of CPNCs exhibited negligible changes during seven months in ambient conditions. The carrier dynamics based on time-resolved photoluminescence (PL) and transient absorption spectroscopy reveal that the hot electron tunneling and trapping process are significant in the composite film. This work provides a good understanding of CPNC materials in complex composite for the development of flexible, robust, color controllable fluorescent films for lighting applications.

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Section: Resultsmentioning

confidence: 99%

Flexible, ultra-stable and color tunable fluorescent films based on all inorganic perovskite quantum dots embedded in polymer

et al. 2020

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“…The doping of metal elements into semiconductors can be realized through a variety of methods such as the sol-gel method [46][47][48], solvothermal method [1,49,50], chemical vapor deposition (CVD) [32,51], chemical vapor transport (CVT) [52] and pulse laser deposition (PLD) [33,53] etc. Meanwhile, doping through sol-gel and solvothermal methods must go through the co-precipitate process essentially.…”

Section: Metal Element Incorporationmentioning

confidence: 99%

Band structure engineering strategies of metal oxide semiconductor nanowires and related nanostructures: A review

Piyadasa

Wang

Gao

2017

Semicond. Sci. Technol.

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The electronic band structure of a solid state semiconductor determines many of its physical and chemical characteristics such as electrical, optical, physicochemical, and catalytic activity. Alteration or modification of the band structure could lead to significant changes in these physical and chemical characteristics, therefore we introduce new mechanisms of creating novel solid state materials with interesting properties. Over the past three decades, research on band structure engineering has allowed development of various methods to modify the band structure of engineered materials. Compared to bulk counterparts, nanostructures generally exhibit higher band structure modulation capabilities due to the quantum confinement effect, prominent surface effect, and higher strain limit. In this review we will discuss various band structure engineering strategies in semiconductor nanowires and other related nanostructures, mostly focusing on metal oxide systems. Several important strategies of band structure modulation are discussed in detail, such as doping, alloying, straining, interface and core-shell nanostructuring.

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“…Under ambient conditions, MgO has rocksalt (RS) crystal structures, and ZnO has those of wurzite (WZ). With the development of synthesis, RS Mg 1−x Zn x O and WZ Zn 1−x Mg x O have been produced in recent years [4,[19][20][21][22][23][24]. In addition, both controlling the concentration of ZMO and applying external pressure have led to E g engineering.…”

Section: Introductionmentioning

confidence: 99%

Influence of Stress on Electronic and Optical Properties of Rocksalt and Wurtzite MgO–ZnO Nanocomposites with Varying Concentrations of Magnesium and Zinc

et al. 2022

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The structural, electronic and optical properties of stressed MgO–ZnO nanocomposite alloys with concentrations of Zn and Mg varying from 0.125 to 0.875 were studied using ab initio simulations. Two crystal structures are considered for the initial MgO–ZnO alloys: the rocksalt Mg\({_\text{1-x}}\)Zn\({_\text{x}}\)O and wurtzite Zn\({_\text{1-x}}\)Mg\({_\text{x}}\)O phases. For rocksalt Mg\({_\text{1-x}}\)Zn\({_\text{x}}\)O, the optimized structures are stable at pressures below 10 GPa. The larger the Mg concentration and pressure, the wider the \({E_{g}}\) of the rocksalt phase. In contrast, the optimal geometries of wurtzite Zn\({_\text{1-x}}\)Mg\({_\text{x}}\)O reveal a diversity of possibilities, including rocksalt, wurtzite and mixed phases. These effects lead to the fact that the optical properties of wurtzite Zn\({_\text{1-x}}\)Mg\({_\text{x}}\)O not only demonstrate the properties of the wurtzite phase but also indicate the optical features of the rocksalt phase. In addition, mixed phases of Zn\({_\text{1-x}}\)Mg\({_\text{x}}\)O simultaneously provide the characteristics of both wurtzite and rocksalt phases with the same structures in different dielectric matrices.

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Rapid and High-Efficiency Laser-Alloying Formation of ZnMgO Nanocrystals

Cited by 15 publications

References 34 publications

Flexible, ultra-stable and color tunable fluorescent films based on all inorganic perovskite quantum dots embedded in polymer

Flexible, ultra-stable and color tunable fluorescent films based on all inorganic perovskite quantum dots embedded in polymer

Band structure engineering strategies of metal oxide semiconductor nanowires and related nanostructures: A review

Influence of Stress on Electronic and Optical Properties of Rocksalt and Wurtzite MgO–ZnO Nanocomposites with Varying Concentrations of Magnesium and Zinc

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