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学者姓名：郑远辉
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Abstract ：
Large ZnSe quantum dots (QDs) with an emission peak approximate to 450 nm hold significant promise for display technologies. However, achieving efficient pure-blue emission through the enlargement of ZnSe nanocrystals remains a significant challenge. In this study, a breakthrough is reported in growing large-size ZnSe QDs well beyond the exciton Bohr radius through Yb3(+ )doping strategy. Yb3+ doping reduces the surface energy of the ZnSe (220) crystal plane and alleviates interface strain in the ZnSe/ZnS structure, enabling the QDs to grow larger while maintaining enhanced crystal stability. The resulting Yb: ZnSe/ZnS QDs exhibit pure-blue emission at 453 nm, with a full width at half maximum (FWHM) of 46 nm and a high photoluminescence quantum yield (PLQY) of 67.5%. When integrated into quantum dot light-emitting diodes (QLEDs), the devices display electroluminescence (EL) at 455 nm, with an external quantum efficiency (EQE) of 1.35%, and a maximum luminance of 1337.08 cd m(-2).
Keyword ：
exciton Bohr radius exciton Bohr radius pure blue emission pure blue emission surface energy surface energy yb(3+) doping yb(3+) doping znse/zns quantum dots znse/zns quantum dots
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| GB/T 7714 | Hu, Zhenyu , Yang, Song , Zheng, Li et al. Mitigating Surface Energy and Core-Shell Interface Strain of Yb3+-Doped ZnSe-Based Quantum Dots for Pure-Blue Emission QLED Devices [J]. | ADVANCED MATERIALS , 2025 . |
| MLA | Hu, Zhenyu et al. "Mitigating Surface Energy and Core-Shell Interface Strain of Yb3+-Doped ZnSe-Based Quantum Dots for Pure-Blue Emission QLED Devices" . | ADVANCED MATERIALS (2025) . |
| APA | Hu, Zhenyu , Yang, Song , Zheng, Li , Qiu, Haijiang , Tanwen, Jiayi , Gu, Yingying et al. Mitigating Surface Energy and Core-Shell Interface Strain of Yb3+-Doped ZnSe-Based Quantum Dots for Pure-Blue Emission QLED Devices . | ADVANCED MATERIALS , 2025 . |
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The uncontrolled growth of dendritic lithium on the lithium surface negatively impacts the lifespan of lithium metal batteries due to the instability of the solid electrolyte interphase (SEI). This paper introduces the concept of incorporating lithium-fluoride (LiF) salt into lithium metal to promote the formation of a LiF-rich interphase through a dissolution and re-deposition process, resulting in longer cycling lithium metal batteries. Solid salt, LiF, is integrated into the entire bulk phase of lithium metal using a simple and cost-effective mechanical rolling method. The surface LiF particles on the lithium metal prevent direct reaction of the electrolyte with the lithium metal underneath. Additionally, they can slowly dissolve into the electrolyte and redeposit onto uncovered areas of the lithium metal during the in-situ SEI formation process. When the in-situ formed SEI ruptures during the cycling process, the lithium metal are exposed to the electrolyte, providing LiF species for SEI healing at the crack region. The symmetrical cell with the designed LiF-rich electrode exhibits stable polarization voltage over 1000 h of cycle time (1 mA cm−2/1 mAh cm−2). Stable charging and discharging cycles over 550 times are also achieved for full cells consisting of the prepared anode and LiFePO4 cathode at 1C. © 2024 Elsevier Ltd
Keyword ：
LiF incorporated Li LiF incorporated Li LiF-rich SEI LiF-rich SEI Lithium metal batteries Lithium metal batteries Mechanical rolling Mechanical rolling
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| GB/T 7714 | Chen, M. , Jiang, Y. , Hong, H. et al. Salt-in-metal-assisted formation of LiF-rich interphase for lithium metal anodes [J]. | Journal of Energy Storage , 2024 , 101 . |
| MLA | Chen, M. et al. "Salt-in-metal-assisted formation of LiF-rich interphase for lithium metal anodes" . | Journal of Energy Storage 101 (2024) . |
| APA | Chen, M. , Jiang, Y. , Hong, H. , Chen, X. , Cheng, H. , Zheng, Y. . Salt-in-metal-assisted formation of LiF-rich interphase for lithium metal anodes . | Journal of Energy Storage , 2024 , 101 . |
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Abstract ：
The uncontrolled growth of dendritic lithium on the lithium surface negatively impacts the lifespan of lithium metal batteries due to the instability of the solid electrolyte interphase (SEI). This paper introduces the concept of incorporating lithium-fluoride (LiF) salt into lithium metal to promote the formation of a LiF-rich interphase through a dissolution and re-deposition process, resulting in longer cycling lithium metal batteries. Solid salt, LiF, is integrated into the entire bulk phase of lithium metal using a simple and cost-effective mechanical rolling method. The surface LiF particles on the lithium metal prevent direct reaction of the electrolyte with the lithium metal underneath. Additionally, they can slowly dissolve into the electrolyte and redeposit onto uncovered areas of the lithium metal during the in-situ SEI formation process. When the in-situ formed SEI ruptures during the cycling process, the lithium metal are exposed to the electrolyte, providing LiF species for SEI healing at the crack region. The symmetrical cell with the designed LiF-rich electrode exhibits stable polarization voltage over 1000 h of cycle time (1 mA cm(-2)/1 mAh cm(- 2)). Stable charging and discharging cycles over 550 times are also achieved for full cells consisting of the prepared anode and LiFePO(4 )cathode at 1C.
Keyword ：
LiF incorporated Li LiF incorporated Li LiF-rich SEI LiF-rich SEI Lithium metal batteries Lithium metal batteries Mechanical rolling Mechanical rolling
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| GB/T 7714 | Chen, Meiting , Jiang, Yunlong , Hong, Hengfeng et al. Salt-in-metal-assisted formation of LiF-rich interphase for lithium metal anodes [J]. | JOURNAL OF ENERGY STORAGE , 2024 , 101 . |
| MLA | Chen, Meiting et al. "Salt-in-metal-assisted formation of LiF-rich interphase for lithium metal anodes" . | JOURNAL OF ENERGY STORAGE 101 (2024) . |
| APA | Chen, Meiting , Jiang, Yunlong , Hong, Hengfeng , Chen, Xin , Cheng, Hongrui , Zheng, Yuanhui . Salt-in-metal-assisted formation of LiF-rich interphase for lithium metal anodes . | JOURNAL OF ENERGY STORAGE , 2024 , 101 . |
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Developing violet‐light‐excitable deep‐red (650–660 nm) Eu2+‐activated phosphor is essential for full‐spectrum lighting. However, the related phosphors with facile synthesis, excellent optical performance, and superior thermal stability are scarce. Herein, a new class of (Sr,Ba)Lu2O4: Eu2+ deep‐red phosphor (660 nm) excitable by violet light via Ba2+‐induced local structure engineering is reported. Impressively, tunable emission from 615 to 682 nm, accompanied by significant improvement of thermal stability (81%@423 K), is achieved by partially substituting Sr2+ by Ba2+ in SrLu2O4: Eu2+. Crystal field analysis, density functional theory calculations, and thermoluminescence spectra confirm that the strong distortion and enhanced covalency of [EuO6] octahedron are responsible for spectral tunability, and the formation of shallow trapping states is beneficial for electron compensation to inhibit thermal quenching in the Sr0.85Ba0.15Lu2O4: Eu2+ phosphor. Finally, a white light‐emitting diode prototype fabricated by coupling of the Sr0.85Ba0.15Lu2O4: Eu2+ deep‐red phosphor and commercial blue/green phosphors with violet chip can yield sunlight‐like white light with an ultra‐high color rendering index (Ra = 95.2, R9 = 97.0) and an appropriate correlated color temperature of 4121 K, verifying its significant application potential in full‐spectrum solid‐state lighting.
Keyword ：
crystal field crystal field deep-red phosphors deep-red phosphors light-emitting diodes light-emitting diodes luminescent materials luminescent materials oxide phosphors oxide phosphors
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| GB/T 7714 | Shaoxiong Wang , Fengluan You , Shaojun Wang et al. Deep‐Red (Sr,Ba)Lu2O4: Eu2+ Phosphor for Full‐Spectrum Lighting [J]. | physica status solidi(RRL)— Rapid Research Letters , 2024 , 18 (8) : n/a-n/a . |
| MLA | Shaoxiong Wang et al. "Deep‐Red (Sr,Ba)Lu2O4: Eu2+ Phosphor for Full‐Spectrum Lighting" . | physica status solidi(RRL)— Rapid Research Letters 18 . 8 (2024) : n/a-n/a . |
| APA | Shaoxiong Wang , Fengluan You , Shaojun Wang , Tao Pang , Lingwei Zeng , Shisheng Lin et al. Deep‐Red (Sr,Ba)Lu2O4: Eu2+ Phosphor for Full‐Spectrum Lighting . | physica status solidi(RRL)— Rapid Research Letters , 2024 , 18 (8) , n/a-n/a . |
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Constructing a Z-scheme heterojunction with enhanced photocatalytic hydrogen evolution for graphitic carbon nitride-based (g-C3N4) composites is challenging because integrating g-C3N4 with other semiconductors, without specific band structure design, typically results in type I or type II heterojunctions. These heterojunctions have lower redox ability and limited enhancement in photocatalysis. Herein, we select highly crystalline carbon nitride (HCCN) as a proof-of-concept substrate. For the first time, we develop a AgBr nanosphere/HCCN composite photocatalyst that features an all -solid -state direct Z-scheme heterojunction for visible-light photocatalytic hydrogen evolution. The electron transfer mechanism is initially studied from the band structures and Fermi levels of HCCN and AgBr. It is subsequently confirmed by X-ray photoelectron spectroscopy (XPS), and electron microscopy. The close heterojunction contact and the built-in electron field of the Z-scheme heterojunction promote the migration and separation of photogenerated electrons and holes in the composite photocatalyst. Due to the redistribution of charge carriers, the photocatalyst shows superior redox capability and a markedly enhanced hydrogen evolution performance compared to its individual components. Combining all the advantages, AgBr nanosphere/HCCN reached an apparent quantum efficiency (AQE) of 6 % under the illumination of 410 nm, which is 4 times higher than that of the single HCCN component.
Keyword ：
AgBr nanosphere AgBr nanosphere Highly crystalline carbon nitride Highly crystalline carbon nitride Hydrogen production Hydrogen production Photocatalysis Photocatalysis Z-scheme heterojunction Z-scheme heterojunction
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| GB/T 7714 | Sun, Wenhao , Ahmed, Taha , Elbouazzaoui, Kenza et al. Facile fabrication of AgBr/HCCN hybrids with Z-scheme heterojunction for efficient photocatalytic hydrogen evolution [J]. | APPLIED SURFACE SCIENCE , 2024 , 651 . |
| MLA | Sun, Wenhao et al. "Facile fabrication of AgBr/HCCN hybrids with Z-scheme heterojunction for efficient photocatalytic hydrogen evolution" . | APPLIED SURFACE SCIENCE 651 (2024) . |
| APA | Sun, Wenhao , Ahmed, Taha , Elbouazzaoui, Kenza , Edvinsson, Tomas , Zheng, Yuanhui , Zhu, Jiefang . Facile fabrication of AgBr/HCCN hybrids with Z-scheme heterojunction for efficient photocatalytic hydrogen evolution . | APPLIED SURFACE SCIENCE , 2024 , 651 . |
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Halogenated methane serves as a universal platform molecule for building high-value chemicals. Utilizing sodium chloride solution for photocatalytic methane chlorination presents an environmentally friendly method for methane conversion. However, competing reactions in gas-solid-liquid systems leads to low efficiency and selectivity in photocatalytic methane chlorination. Here, an in situ method is employed to fabricate a hydrophobic layer of TaOx species on the surface of NaTaO3. Through in-situ XPS and XANES spectra analysis, it is determined that TaOx is a coordination unsaturated species. The TaOx species transforms the surface properties from the inherent hydrophilicity of NaTaO3 to the hydrophobicity of TaOx/NaTaO3, which enhances the accessibility of CH4 for adsorption and activation, and thus promotes the methane chlorination reaction within the gas-liquid-solid three-phase system. The optimized TaOx/NaTaO3 photocatalyst has a good durability for multiple cycles of methane chlorination reactions, yielding CH3Cl at a rate of 233 mu mol g(-1) h(-1) with a selectivity of 83%. In contrast, pure NaTaO3 exhibits almost no activity toward CH3Cl formation, instead catalyzing the over-oxidation of CH4 into CO2. Notably, the activity of the optimized TaOx/NaTaO3 photocatalyst surpasses that of reported noble metal photocatalysts. This research offers an effective strategy for enhancing the selectivity of photocatalytic methane chlorination using inorganic chlorine ions.
Keyword ：
hydrophobicity hydrophobicity methane chlorination methane chlorination photocatalysis photocatalysis TaOx TaOx ultrathin layer ultrathin layer
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| GB/T 7714 | Li, Dongmiao , Lin, Min , Zhang, Jiangjie et al. Hydrophobic TaOx Species Overlayer Tuning Light-Driven Methane Chlorination with Inorganic Chlorine [J]. | SMALL , 2024 , 20 (38) . |
| MLA | Li, Dongmiao et al. "Hydrophobic TaOx Species Overlayer Tuning Light-Driven Methane Chlorination with Inorganic Chlorine" . | SMALL 20 . 38 (2024) . |
| APA | Li, Dongmiao , Lin, Min , Zhang, Jiangjie , Qiu, Chengwei , Chen, Hui , Xiao, Zhen et al. Hydrophobic TaOx Species Overlayer Tuning Light-Driven Methane Chlorination with Inorganic Chlorine . | SMALL , 2024 , 20 (38) . |
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Lead halide perovskite quantum dots (PeQDs) generally show slow hot carrier (HC) cooling because of the retarded relaxation of longitudinal optical (LO) phonons induced by hot phonon bottleneck effect. Although the feature is beneficial for designing photovoltaic devices beyond Schottky-Queisser limitation by manipulating HC excess energy, it would be hostile toward light-emitting applications where fast HC cooling is preferred. Herein, a Ni2+ doping strategy is reported to effectively boost HC cooling in CsPbI3 PeQDs and inhibit Auger recombination, giving rise to near unity photoluminescent quantum yield (PLQY) for the Ni: CsPbI3 sample. Femtosecond transient (fs-TA) absorption, temperature-dependent PL spectra and theoretical calculations evidence that Ni2+ doping results in the enhancement of electron-LO phonon coupling, the introduction of extra energy states at band edges, the increasement of effective carrier mass, and the modification of phonon dispersion spectra as well as density of states (DOS) of LO phonon modes. These synergistic roles ensure efficient Klemens decay within Ni: CsPbI3, which facilitates fast decay of hot phonons and break hot phonon bottleneck. These findings provide a valid route to tackle HC dynamics and pave a way for PeQDs-based efficient light-emitting applications.
Keyword ：
CsPbI3 CsPbI3 femtosecond transient absorption femtosecond transient absorption impurity doping impurity doping luminescent materials luminescent materials phonon-bottleneck effect phonon-bottleneck effect
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| GB/T 7714 | Niu, Weifan , Chen, Ronghua , Pang, Tao et al. Boosting Hot Carrier Cooling in Halide Perovskite Quantum Dots via Ni2+ Doping [J]. | ADVANCED OPTICAL MATERIALS , 2024 , 12 (19) . |
| MLA | Niu, Weifan et al. "Boosting Hot Carrier Cooling in Halide Perovskite Quantum Dots via Ni2+ Doping" . | ADVANCED OPTICAL MATERIALS 12 . 19 (2024) . |
| APA | Niu, Weifan , Chen, Ronghua , Pang, Tao , Zheng, Yuanhui , Wu, Tianmin , Zhang, Ruidan et al. Boosting Hot Carrier Cooling in Halide Perovskite Quantum Dots via Ni2+ Doping . | ADVANCED OPTICAL MATERIALS , 2024 , 12 (19) . |
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Perovskite quantum dots (PeQDs) are seen as the credible alternative to traditional QDs ascolor converter in liquid crystal display (LCD). Unfortunately, PeQDs sufferfrom instability and color separation, and the prepared PeQDs enhanced films(PQDFs) need the protection of expensive barrier layers, which significantly increases price and limits their application. Herein, large-area yellow monolithic PQDF is fabricated with both green CsPbBr3 and red CsPbBr(1)I(2)QDs encapsulated in the dual matrices of inorganic glass and polypropylene (PP) via an industrialized melt extruding & rolling method. The PQDF shows high photoluminescence quantum yield (PLQY) of 92% and narrow full width at half maximum (FWHM) of 19 nm (green) and 33 nm (red). Importantly, the bare PQDF without barrier layers can pass harsh aging test at 85 C-degrees/85% RH and reach anoperating T90 lifetime over 1000 h. Finally, a white backlit unit is designed by coupling yellow monolithic PQDF with blue light guide panel, and the constructed prototype display shows superior color rendering performance forits narrow green/red emissions, reaching a color gamut of 110% National Television System Committee (NTSC). This work provides a novel and easy-to-industrialize route to prepare PQDFs to realize their commercial application in backlit display.
Keyword ：
CsPbX3 CsPbX3 glass glass luminescent materials luminescent materials perovskite quantum dots perovskite quantum dots polymer polymer
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| GB/T 7714 | Lin, Jidong , Chen, Shuxin , Ye, Weichao et al. Ultra-Stable Yellow Monolithic Perovskite Quantum Dots Film for Backlit Display [J]. | ADVANCED FUNCTIONAL MATERIALS , 2024 , 34 (27) . |
| MLA | Lin, Jidong et al. "Ultra-Stable Yellow Monolithic Perovskite Quantum Dots Film for Backlit Display" . | ADVANCED FUNCTIONAL MATERIALS 34 . 27 (2024) . |
| APA | Lin, Jidong , Chen, Shuxin , Ye, Weichao , Zeng, Yongxi , Xiao, Han , Pang, Tao et al. Ultra-Stable Yellow Monolithic Perovskite Quantum Dots Film for Backlit Display . | ADVANCED FUNCTIONAL MATERIALS , 2024 , 34 (27) . |
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Developing violet-light-excitable deep-red (650-660 nm) Eu2+-activated phosphor is essential for full-spectrum lighting. However, the related phosphors with facile synthesis, excellent optical performance, and superior thermal stability are scarce. Herein, a new class of (Sr,Ba)Lu2O4: Eu2+ deep-red phosphor (660 nm) excitable by violet light via Ba2+-induced local structure engineering is reported. Impressively, tunable emission from 615 to 682 nm, accompanied by significant improvement of thermal stability (81%@423 K), is achieved by partially substituting Sr2+ by Ba2+ in SrLu2O4: Eu2+. Crystal field analysis, density functional theory calculations, and thermoluminescence spectra confirm that the strong distortion and enhanced covalency of [EuO6] octahedron are responsible for spectral tunability, and the formation of shallow trapping states is beneficial for electron compensation to inhibit thermal quenching in the Sr0.85Ba0.15Lu2O4: Eu2+ phosphor. Finally, a white light-emitting diode prototype fabricated by coupling of the Sr0.85Ba0.15Lu2O4: Eu2+ deep-red phosphor and commercial blue/green phosphors with violet chip can yield sunlight-like white light with an ultra-high color rendering index (R-a = 95.2, R-9 = 97.0) and an appropriate correlated color temperature of 4121 K, verifying its significant application potential in full-spectrum solid-state lighting.
Keyword ：
crystal field crystal field deep-red phosphors deep-red phosphors light-emitting diodes light-emitting diodes luminescent materials luminescent materials oxide phosphors oxide phosphors
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| GB/T 7714 | Wang, Shaoxiong , You, Fengluan , Wang, Shaojun et al. Deep-Red (Sr,Ba)Lu2O4: Eu2+ Phosphor for Full-Spectrum Lighting [J]. | PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS , 2024 , 18 (8) . |
| MLA | Wang, Shaoxiong et al. "Deep-Red (Sr,Ba)Lu2O4: Eu2+ Phosphor for Full-Spectrum Lighting" . | PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS 18 . 8 (2024) . |
| APA | Wang, Shaoxiong , You, Fengluan , Wang, Shaojun , Pang, Tao , Zeng, Lingwei , Lin, Shisheng et al. Deep-Red (Sr,Ba)Lu2O4: Eu2+ Phosphor for Full-Spectrum Lighting . | PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS , 2024 , 18 (8) . |
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Due to their excellent optical performance, lead halide perovskite nanocrystals (PeNCs) have been widely used in optoelectronic devices. However, the presence of surface defects such as localized trap states severely hampers their practical application in optoelectronic fields. In this work, we have developed a simple method to reduce surface defects by introducing sulfuric acid after the nucleation of CsPbI3 PeNCs is complete. Sulfate ions effectively interact with the exposed metal lead ions on the surface of perovskite NCs, leading to surface passivation. This process represses nonradiative recombination and significantly enhances the luminescence efficiency of PeNCs. Moreover, the passivated CsPbI3 PeNCs with SO42- exhibit a lower overall energy-level structure compared to that of pristine CsPbI3 PeNCs, promoting improved electron injection. Benefiting from this highly effective passivation strategy, light-emitting diodes (LEDs) based on SO42--passivated PeNCs exhibit an optimal external quantum yield of 9.94% and luminance of 2182 cd m(-2), surpassing the performance of LEDs made from pristine PeNCs.
Keyword ：
CsPbI3 perovskite nanocrystals CsPbI3 perovskite nanocrystals energy-level modulation energy-level modulation PbSO4 inorganiclayer PbSO4 inorganiclayer red light-emittingdiodes red light-emittingdiodes surface passivation surface passivation
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| GB/T 7714 | Cheng, Hongrui , Wang, Wensong , Qiu, Haijiang et al. Sulfate-Passivated CsPbI3 Perovskite Nanocrystals for Efficient Red Light-Emitting Diodes [J]. | ACS APPLIED NANO MATERIALS , 2024 , 7 (7) : 6885-6892 . |
| MLA | Cheng, Hongrui et al. "Sulfate-Passivated CsPbI3 Perovskite Nanocrystals for Efficient Red Light-Emitting Diodes" . | ACS APPLIED NANO MATERIALS 7 . 7 (2024) : 6885-6892 . |
| APA | Cheng, Hongrui , Wang, Wensong , Qiu, Haijiang , Li, Fushan , Zheng, Yuanhui . Sulfate-Passivated CsPbI3 Perovskite Nanocrystals for Efficient Red Light-Emitting Diodes . | ACS APPLIED NANO MATERIALS , 2024 , 7 (7) , 6885-6892 . |
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