CERAMICS INTERNATIONAL
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2023
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IF 5.2
Hongxing Xie,Qizhong Lin,Xinyuan Chen,Sijin Liu,Xingke Zheng,Aochen Du,Zhenyu Zeng,Tianyong Guan,Yun Ye,Enguo Chen,Sheng Xu,Yang Li,Tailiang Guo
Quantum dots (QDs) have showed great potential for next-generation lighting and display technologies. However, its stability is still one of the key problems that limit its practical application. In this paper, by comparing the specific surface area (SSA) and pore width of aluminum oxide (AlO x ) and silicon oxide (SiO 2 ) barrier layers, the relationship between the porosity of barrier layers and the stability of QDs was studied. The results showed that the synthesized SiO 2 -QD-AlO x , which has the smallest SSA in the synthesized QD composites, exhibited the best stability on the quantum dot diffuser plate (QD-DP). Moreover, the operational lifetime (T 80 ) at 450 nm blue light excitation was increased by a factor of 3.41 compared to that of bare QDs. Meanwhile, the prepared QD-DP containing dense SiO 2 -QD-AlO x composites significantly improved the resistance to light, heat, moisture and oxygen. Finally, the prepared QD-DP was assembled into a Mini-LED TV with a wide color gamut and excellent display performance (a color gamut of 157.4 % for commercial normal TV, and 107.19 % for the National Television System Committee (NTSC 1931)). This technique provides favorable guide for effectively enhancing the stability of QDs in lighting and display technologies.
研究领域:
材料科学
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显示技术
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光学工程
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Le Zhai,Xueli Yang,Liunan She,Yingqi Di,Guofeng Pan,Jie Cheng
The chemical mechanical polishing (CMP) process for the titanium (Ti) barrier layer in Through-Silicon Via (TSV) technology is crucial for the fabrication of advanced 3D and 2.5D integrated circuit (IC) chip packaging. A major challenge in this process is achieving a high Ti removal rate while carefully optimizing the selectivity ratio between Ti and copper (Cu). This study rationally selected 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTCA) as a complexing agent and α-benzoin oxime (ABO) as a corrosion inhibitor in CMP for TSV Ti-based barrier layers. A combined experimental and theoretical approach was used to explore the CMP effects of the two reagents. The experimental results demonstrate that PBTCA significantly enhances the Ti removal rate, while the adsorption of ABO on the Cu surface mitigates the corrosion caused by PBTCA and effectively improved the surface quality of both Cu and Ti. Density Functional Theory (DFT) calculations were performed to analyze the interaction between PBTCA and ABO molecules at the atomic level. This study presents an effective method for removing Ti barrier layers from TSV by using PBTCA and ABO synergistically, providing a practical and effective solution for barrier layer CMP in advanced IC packaging applications.
研究领域:
微电子学
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材料科学
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产品关联
DOI
高影响因子
RSC Advances
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2016
·Vol. 6
·期 6
·5100-5110
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IF 3.289
Yinghao Wu,Wenjie Zhao,Wurong Wang,Wenjie Sui
Aluminum alloys with novel binary anti-corrosion structures on the surface showing superhydrophobic properties were fabricated via chemical etching, anodic oxidation and chemical modification. Surface morphologies and chemical elements of the as-prepared films were investigated by Fourier transform infrared spectrometer, scanning electron microscopy and confocal laser scanning microscope. Surface wettability was investigated by the contact angle meter. Manipulation of surface morphology by anodic oxidation current density and the influence of surface chemical modification on the wettability were investigated. The anti-corrosion properties of the as-prepared films were characterized using an electrochemistry workstation. The results showed that surface water contact angle could reach 156° after chemical modification when the current density of anodic oxidation was 5 A dm−2. The corrosion potential (Ecorr) was positively increased from −1189 mV for bare Al alloys to −304 mV for the samples anodized at 5 A dm−2. The synergetic effect between the protective properties of air trapped in a low adhesion superhydrophobic surface and good barrier properties of the barrier layer of anodic oxidation film was remarkably enhanced the corrosion resistance of aluminum alloys. Influences of the anodic oxidation current density and the self-assembled films on the anti-corrosion performance were discussed in detail.
研究领域:
材料科学
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表面工程
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产品关联
DOI
高影响因子
Journal of Chemistry
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2018
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IF 1.726
Kai Zhu,Yunhe Wang,Qi Zhou,Daquan Tang,Lingzhu Gu,Ke Wu
In this study, cone calorimeter and thermogravimetric analyses were used to simulate the asphalt combustion process under the conditions of fire radiation and programmed temperature increase. The gaseous compositions and release rules were analyzed by infrared spectroscopy to investigate the influence of hydrated lime on the smoke suppression mechanism in the asphalt combustion process. The experimental results show that hydrated lime can promote the asphalt mastic surface to form a barrier layer during the combustion process. This barrier layer can reduce the burning intensity of asphalt. Although the compositions of gaseous products do not change much, the rates of CO production and smoke release are decreased. In addition, hydrated lime is alkaline and can thus neutralize acidic gases such as SO2 and reduce the toxicity of gaseous products. With the addition of 40 wt.% hydrated lime, the total smoke release and the CO release rate both decrease by more than 20% relative to the addition of the same amount of limestone fillers and decrease by more than 10% relative to the addition of the same amount of magnesium hydroxide flame retardant.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materiomics
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2021
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IF 6.425
Z. Sun,X. Chen,Juncheng Zhang,Huiyuan Geng,L.X. Zhang
Skutterudite (SKD) thermoelectric materials have high conversion efficiency, great mechanical properties, and economical practicability in the medium temperature range (500–550 °C). They need to be joined with metal electrodes to form a thermoelectric power generation device during application. However, high contact resistivity, severe element diffusion, and large coefficient of thermal expansion mismatch are main obstacles for their applications. To address these issues, a FeCoNiCrMo high-entropy alloy diffusion barrier layer was designed and prepared using an arc smelting method in this paper. Effect of heating temperatures on the microstructure and properties of the bonded joints were investigated. The maximum shear strength was 21.6 Mpa and the corresponding reaction layer thickness, contact resistivity were 3.77 μm, 1.8 μΩcm 2 respectively at 600 °C, 40 MPa, 10 min. Shear strength dropped down to 18.8 MPa and the contact resistivity increased to 4.2 μΩ cm 2 after aging for 640 h. Numerical model was established and it predicted that the contact resistivity would keep lower than 6.5 μΩ cm 2 (300 h, 100 days) and 11 μΩ cm 2 (8760 h, 1 year) and the reaction layer thickness would not exceed 25 μm (2400 h, 100 days) and 45 μm (8760 h, 1 year).
研究领域:
材料科学
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热电技术
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2018
·
IF 4.439
Yadong Zhu,Xufeng Yu,Tonghui Zhang,Weikang Hua,Xuefen Wang
In order to develop advanced hemodiafiltration membrane with favorable biocompatibility and efficient dialysis performance, novel thin film nanofibrous composite (TFNC) ultrafiltration (UF) membranes consisting of sulfonated poly(vinyl alcohol) (s-PVA) blended PVA hydrogel barrier layer and electrospun polyacrlonitrile (PAN) nanofibrous supporting layer were designed and fabricated by combining electrospinning and conventional surface coating techniques. The mesh sizes of hydrogel network of s-PVA/PVA barrier layer could be tuned by varying the blending content of s-PVA. The optimized s-PVA/PVA TFNC UF membrane (S-P-TFNC-1-3) possessed high pure water flux up to 380 L m −2 h −1 bar −1 with high bovine serum albumin (BSA) rejection (>90%). Besides, the introduction of s-PVA into the hydrogel barrier layer endowed the TFNC membranes with enhanced hydrophilicity, antifouling property and biocompatibility (decreased protein adsorption, prolonged clotting time, suppressed platelet adhesion, lower hemolysis ratio and more benefits for cell proliferation) due to the presence of sulfonic groups. The dialysis simulation experiment results of S-P-TFNC-1-3 showed that 84.2% of urea and 60.9% of lysozyme were cleaned and over 95% of BSA was retained after 4 h dialysis process. Especially, the removal of middle-molecule uremic toxin was more efficient than conventional hemodialysis membranes reported so far, and high retention of big proteins was achieved simultaneously. This work exposes a window of opportunity for modified PVA TFNC membranes in blood purification applications.
研究领域:
材料科学
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医学工程
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生物医学
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产品关联
DOI
高影响因子
POLYMER
·
2023
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IF 4.6
Jingjing Hou,Lu Han,Shuzheng Sun,Mingkai Li,Junbo Yue,Yanqin Yang,Jingde Li
The commercialization of lithium-sulfur (Li-S) batteries has been restrained mainly by lithium polysulfides (LiPSs) shuttling and sluggish electrochemical reactions . Herein, a functional separator with synergy effect between adsorption and catalysis is proposed to solve the above problems. Specifically, an ultrathin barrier layer of a functionalized intrinsic microporous polymer (Li-AOPIM-1) is coated on SWCNT gutter layer through spin coating and applied to modify the cathode side of commercial polypropylene (PP) separator. In this configuration, the robust SWCNT gutter layer with high conductivity can not only work as a physical barrier to block the macropores of PP separator, but also improve the integral conductivity, resulting in a rapid charge migration and reaction kinetics. The electronegative heteroatoms N and O in Li-AOPIM-1 top layer have strong adsorption capability to LiPSs so that modified separator can restrain the shuttle effect admirably. Moreover, the introduction of lithiated sites further enhance the lithium-ion conductivity. Accordingly, the Li-S batteries implementing this modified separator deliver stable lifespan with only 0.062% capacity fading rate per cycle after 500 cycles at 1 C and superior rate performance of 700.6 mAh g −1 at 3 C. This work will provide a feasible strategy for the practical applications of high-performance Li-S batteries.
研究领域:
材料科学
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能源存储技术
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产品关联
DOI
高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
·
2023
·Vol. 21
·期 1
·1-20
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IF 10.2
Li Jiaxin,Li Weichang,Kong Mengjie,Li Zongtai,Yang Tao,Wang Qinmei,Teng Wei
Guided bone regeneration (GBR) is widely used in treating oral bone defects to exclude the influence of non-osteogenic tissue on the bone healing process. The traditional method of GBR with a titanium mesh to treat large-area bone defects is limited by the deficiency of increased trauma and costs to patients. Herein, a bi-layered scaffold for GBR composed of a fiber barrier layer and a self-healing hydrogel repair layer is successfully fabricated. The barrier layer is a fibrous membrane material with specific porosity constructed by electrospinning, while the functional layer is a self-healing hydrogel material formed by multiple dynamic covalent bonds. The system can provide an osteogenic microenvironment by preventing the infiltration of connective tissue to bone defects, maintain the stability of the osteogenic space through the self-healing property, and regulate the release of bioactive substances in the dynamic physical condition, which is beneficial to osteoblast proliferation, differentiation, and bone regeneration. This study focused on exploring the effects of different crosslinkers and bonding methods on the comprehensive properties of hydrogels. and proved that the hybrid scaffold system has good biocompatibility, cell barrier function and can enhance bone regeneration activity. Thereby it could be a promising clinical strategy for bone regeneration.
研究领域:
生物材料
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组织工程
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再生医学
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牙科材料
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产品关联
DOI
PubMed
高影响因子
Advanced Materials Technologies
·
2023
·Vol. 8
·期 17
·2300398
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IF 6.8
Yangshi Shao,Zi Hao Guo,Kai Yang,Luyao Jia,Xiong Pu
Soft hydrogel iontronic devices, utilizing the assumed non-Faradaic exchange of ions and electrons at the metal-hydrogel interfaces, have been demonstrated with advantages of high stretchability, transparency, and biocompatibility. Yet, in real situation under high voltage, Faradaic reaction is inevitable, which can breakdown the device and lead to the low durability. Herein, the Faradaic breakdown behaviors of hydrogel iontronic devices under high AC voltage are systematically studied. Side reactions including electrode corrosion and water electrolysis are confirmed in the electrical double layer. Interface barrier layers are proposed to eliminate this issue. It is found that acetylene black (ACET) as modification layer can achieve the best performances, providing effective protection while maintaining the electrical performances. By leveraging ACET-modified electrodes, long-term durable iontronics, including electroluminescent devices and high-output triboelectric nanogenerators, are successfully demonstrated. This work can provide insightful strategies for developing practical hydrogel iontronic devices.
研究领域:
材料科学
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电化学
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纳米技术
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器件工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）