Deciphering the dual functions of a silicon dioxide protective layer in regulating lithium-ion deposition

Wu, Tianlai; Zhang, Weicai; Cai, Jinguang; Zheng, Mingtao; Sun, Luyi; Yu, Xiaoyuan; Shao, Dan; Xiao, Yong; Liu, YingLiang; Liang, Yeru

doi:10.1039/d2ma00201a

Cited by 3 publications

(3 citation statements)

References 32 publications

(34 reference statements)

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“…Taking (Ph 3 MeP) 2 Cu 4 I 6 as an illustrating example, the photophysical process was proposed to understand the dual-excitonic emission for the title compounds with the octahedral [Cu 4 I 6 ] 2− anions, as shown in Figure 4a. [72][73][74][75] The calculated energies of the excitonic absorption and the triplet STE emission of (Ph 3 MeP) 2 Cu 4 I 6 are 2.71 and 2.11 eV, respectively, which are close to the corresponding experimental values (i.e., 2.64 and 1.96 eV). Figure 4b shows the spin-polarized density of states (DOS) for the ground state structure with an average Cu-Cu bond length of 2.72 Å and an average longitudinal I. .…”

Section: Resultssupporting

confidence: 77%

Achieving Narrowed Bandgaps and Blue‐Light Excitability in Zero‐Dimensional Hybrid Metal Halide Phosphors via Introducing Cation–Cation Bonding

Geng

et al. 2023

Energy & Environ Materials

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Zero‐dimensional (0D) hybrid metal halides, which consist of organic cations and isolated inorganic metal halide anions, have emerged as phosphors with efficient broadband emissions. However, these materials generally have too wide bandgaps and thus cannot be excited by blue light, which hinders their applications for efficient white light‐emitting diodes (WLEDs). The key to achieving a blue‐light‐excitable 0D hybrid metal halide phosphor is to reduce the fundamental bandgap by rational chemical design. In this work, we report two designed hybrid copper(I) iodides, (Ph3MeP)2Cu4I6 and (Cy3MeP)2Cu4I6, as blue‐light‐excitable yellow phosphors with ultrabroadband emission. In these compounds, the [Cu4I6]2− anion forms an I6 octahedron centered on a cationic Cu4 tetrahedron. The strong cation–cation bonding within the unique cationic Cu4 tetrahedra enables significantly lowered conduction band minimums and thus narrowed bandgaps, as compared to other reported hybrid copper(I) iodides. The ultrabroadband emission is attributed to the coexistence of free and self‐trapped excitons. The WLED using the [Cu4I6]2− anion‐based single phosphor shows warm white light emission, with a high luminous efficiency of 65 lm W−1 and a high color rendering index of 88. This work provides strategies to design narrow‐bandgap 0D hybrid metal halides and presents two first examples of blue‐light‐excitable 0D hybrid metal halide phosphors for efficient WLEDs.

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Section: Resultssupporting

confidence: 77%

Achieving Narrowed Bandgaps and Blue‐Light Excitability in Zero‐Dimensional Hybrid Metal Halide Phosphors via Introducing Cation–Cation Bonding

Geng

et al. 2023

Energy & Environ Materials

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“…Generally, in the crystal structure of semiconductor materials, when the periodic arrangement of atoms or ions are perturbed, the defects can be produced and then termed as crystallographic defects. [295,296,297] Generally, the perception of defects in semiconductor materials is the negative influence on their properties and STE efficiency, especially in the field of solar cell. Specifically, the defects in semiconductor materials, especially the deep defects in bandgap, can act as the recombination center, leading to a serious charge recombination and thereby the decrease of the STE performance.…”

Section: Vacancy Introducingmentioning

confidence: 99%

Heterojunction Engineering of Multinary Metal Sulfide‐Based Photocatalysts for Efficient Photocatalytic Hydrogen Evolution

Song,

Zheng,

Yang

et al. 2023

Advanced Materials

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Photocatalytic hydrogen evolution (PHE) via water splitting using semiconductor photocatalysts is an effective path to solve the current energy crisis and environmental pollution. Heterojunction photocatalysts, containing two or more semiconductors, exhibit better PHE rates than those with only one semiconductor owing to the altered band alignment at the interface and stronger driving force for charge separation. Traditional binary metal sulfide (BMS)‐based heterojunction photocatalysts, such as CdS, MoS2, and PbS, demonstrate excellent PHE performance. However, the recently developed multinary metal sulfide (MMS)‐based photocatalysts possess favorable chemical stability, tunable band structure, and flexible element compositions, and have considerable potential to realize higher PHE rates than those of BMSs. In this review article, the mechanism of PHE is first elucidated and then various single and heterojunction MMS‐based photocatalysts and their charge transfer behaviors and PHE performances are systematically summarized. A perspective on potential future research directions in this field is concluded.

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“…Knowing the various properties of a material is always useful for imagining how it might be used in contemporary technologies. Numerous studies have recently been carried out on different variant perovskites for their possible use in spintronic, optoelectronic, and thermoelectric power generation [1][2][3][4][5][6][7][8][9][10][11][12][13]. The general representation for these compounds is X 2 YZ 6 , where X and Y are cations and Z is a halide [14].…”

Section: Introductionmentioning

confidence: 99%

Structural, elastic, mechanical, electronic, and magnetic properties of In₂NbX₆ (X = Cl, Br) variant perovskites

Ali,

Saad H.‐E.,

Ali

et al. 2023

Int J of Quantum Chemistry

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This article is about the study of structural, elastic, mechanical, electronic, and magnetic properties of two variant perovskites In2NbX6 (X = Cl, Br) using density functional theory. To the best of our information all calculations were carried out for the first time. The results established the cubic state stability of the present compounds in the FM phase. The thermodynamic and perovskites phase stabilities are respectively confirmed from negative values of formation energies and tolerance factor. The calculated elastic constants C11, C12, and C44 confirmed the mechanical stability of In2NbX6 compounds. The mechanical properties confirmed ductile nature of In2NbCl6 and brittle nature of In2NbBr6. The electronic properties showed that these compounds were metallic in spin up state and semiconductor in spin down state. The magnetic moments were calculated as 1 μB for both the compounds majorly associated with the Nb atom. The spin dependent electrical conductivity was calculated via BoltzTrap code. Besides half metallic nature, high spin dependent electrical conductivities reveals that In2NbX6 variant perovskites compounds are suitable for spintronic applications.

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Deciphering the dual functions of a silicon dioxide protective layer in regulating lithium-ion deposition

Abstract: Silicon dioxide (SiO2) is widely applied to be as protective layer of lithium (Li) metal, which can suppress the growth of Li dendrites and prolong cycling life. However, the fundamental...

Cited by 3 publications

References 32 publications

Achieving Narrowed Bandgaps and Blue‐Light Excitability in Zero‐Dimensional Hybrid Metal Halide Phosphors via Introducing Cation–Cation Bonding

Achieving Narrowed Bandgaps and Blue‐Light Excitability in Zero‐Dimensional Hybrid Metal Halide Phosphors via Introducing Cation–Cation Bonding

Heterojunction Engineering of Multinary Metal Sulfide‐Based Photocatalysts for Efficient Photocatalytic Hydrogen Evolution

Structural, elastic, mechanical, electronic, and magnetic properties of In₂NbX₆ (X = Cl, Br) variant perovskites

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Deciphering the dual functions of a silicon dioxide protective layer in regulating lithium-ion deposition

Abstract: Silicon dioxide (SiO2) is widely applied to be as protective layer of lithium (Li) metal, which can suppress the growth of Li dendrites and prolong cycling life. However, the fundamental...

Cited by 3 publications

References 32 publications

Achieving Narrowed Bandgaps and Blue‐Light Excitability in Zero‐Dimensional Hybrid Metal Halide Phosphors via Introducing Cation–Cation Bonding

Achieving Narrowed Bandgaps and Blue‐Light Excitability in Zero‐Dimensional Hybrid Metal Halide Phosphors via Introducing Cation–Cation Bonding

Heterojunction Engineering of Multinary Metal Sulfide‐Based Photocatalysts for Efficient Photocatalytic Hydrogen Evolution

Structural, elastic, mechanical, electronic, and magnetic properties of In2NbX6 (X = Cl, Br) variant perovskites

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Product

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Structural, elastic, mechanical, electronic, and magnetic properties of In₂NbX₆ (X = Cl, Br) variant perovskites