IEEE ELECTRON DEVICE LETTERS
·
2022
·Vol. 43
·期 9
·1507-1510
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IF 4.816
Jianmiao Guo,Fangzhou Li,Dan Zhang,Yanghui Liu,Wei Zheng
The detection of solar-blind ultraviolet (SBUV) has received extensive attention from academia and the industry owing to the indispensable applications in many fields, based on which providing suitable photosensitive materials for SBUV photodetectors is necessary and important accordingly. In this study, ScOx films were fabricated by the solution method with the effect of annealing temperature on film quality as well as the performance of SBUV photodetectors analyzed. Combined with the effects from surface roughness and oxygen vacancy ratio of the films, it has been proved that the photodetector fabricated on a ScOx film annealed at 500 °C is an ideal one with the best performance exhibited. The fabrication method proposed in this research, that is, preparing ScOx SBUV photodetectors based on solution-processed films, both provides a new option of materials for SBUV detection and reduces the fabrication costs.
研究领域:
材料科学
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光电子学
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半导体器件
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DOI
高影响因子
IEEE ELECTRON DEVICE LETTERS
·
2020
·Vol. 42
·期 2
·176-179
·
IF 4.221
Junjie Wang,Yanan Ding,Zhen Wang,Qi Tang,Qian Chen,Guoxia Liu,Fukai Shan
In this report, In2O3 nanofiber networks (NFNs) were prepared by electrospinning and the field-effect transistors (FETs) based on In2O3 NFNs were fabricated. The effects of plasma treatment on the electrical performance of the FETs based on In2O3 NFNs were investigated. It is found that the oxygen vacancy in In2O3 NFNs can be tuned by the plasma treatment and the electrical performance of the FETs can be tuned accordingly. In this work, X-ray photoelectron spectroscopy was employed to investigate the chemical stoichiometry in In2O3 nanofibers with respect to plasma treatment conditions. The electrical performances of the FETs based on In2O3 NFNs treated by various plasma treatment conditions were systematically studied. It is found that, compared to those without O2 plasma treatment, the FET based on In2O3 NFNs treated by O2 plasma at 120 W for 5 min exhibits high electrical performance, including the variation of threshold voltage from -22.34 to 7.81 V and current on/off ratio from ~103 to ~107 and a μFE of 1.51 cm2/Vs. This result demonstrates that moderate plasma treatment can be adopted to improve the electrical performance of the FETs based on metal oxide NFNs.
研究领域:
材料科学
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纳米技术
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半导体器件
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电子材料
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DOI
高影响因子
IEEE ELECTRON DEVICE LETTERS
·
2025
·Vol. 46
·期 5
·697-700
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IF 4.5
Xianglong Wang,Peilong Xu,Wenxin Zhang,Jiaqi Xu,Kai Liu,Guangya Liu,Fengyun Wang
The development of physiology and neurological diseases is normally accompanied by the production of acidic changes, making it crucial to develop biosensing system to detect pH variations to prevent early organ lesions. Due to the electrical double layer at the electrolyte/nanowire interface, artificial synaptic transistors can sensitively detect the pH variations. However, few studies focus on monitoring pH variations of the body based on synaptic transistors. In this study, electrolyte-gated synaptic transistors were fabricated using zinc tin oxide (ZnSnO) nanowires as channel materials. The fabricated devices can successfully mimic the functionality of acid-sensing ion channels (ASICs) in biological synapses, including excitatory postsynaptic currents (EPSCs), paired-pulse facilitations (PPFs), and short-term potentiations (STPs) under acidic conditions. Furthermore, ${3}\times {3}$ ZnSnO synaptic transistor arrays were constructed to monitor acid stimulations of diverse intensities and different regions to mimic the tongue ability of human. This work can not only advance the understanding of ASIC functionality in artificial synaptic devices, but also provide a novel approach to develop bioinspired taste-sensing systems with integrated sensing and memory capabilities.
研究领域:
生物传感器
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神经形态电子学
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生物医学工程
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材料科学
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纳米技术
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Ying Huang,Jiani Yao,Jiaqi Ren,Yangyang Li,Shujie Zheng,Zhongjian Li,Yang Hou,Lecheng Lei,Dionysios D. Dionysiou,Bin Yang
Treating wastewater to augment surface water can be a practicable solution to water scarcity, while the residual contaminants of emerging concern (CECs) and inorganic ions put forward new requirements to the treatment methods. Electrochemical chlorine process (EC/Cl 2 ) utilizes the remaining Cl − in wastewater to generate free chlorine and radicals, which could be further improved in conjunction with LED UV 275nm irradiation (UV-EC/Cl 2 ). Compared to UV only and EC/Cl 2 , UV-EC/Cl 2 could effectively decompose the selected CECs at higher rates due to the much higher yield of reactive chlorine species (Cl • , ClO • , and Cl 2 •− ). A MATLAB R2021a programming method was developed to estimate the order of magnitude of these radicals, and Cl 2 •− was the most abundant radical. In the UV-EC/Cl 2 system, CECs with phenolic or aniline moieties were mainly degraded by electrochemical oxidation (EC), ClO • , and Cl 2 •− ; and the CECs with weakly electron-donating moieties were predominately decomposed by EC , • OH, and Cl • . The degradation pathways of levofloxacin, diclofenac, carbamazepine (CBZ), and ibuprofen were proposed according to the transformation products (TPs) detected by LC/Q-TOF-MS. Moreover, the cytotoxicity of spiked CBZ in real water samples, that were discharged to surface water, was significantly reduced by UV-EC/Cl 2 . Interestingly, the electrical energy per order (E E/O ) for CBZ decomposition by LED UV 275nm -EC/Cl 2 (1.46 kWh m −3 order −1 ) is lower than that by UV/Cl 2 , EC/Cl 2 , and UV 254nm -EC/Cl 2 . The results indicate that UV-EC/Cl 2 could be used as a promising method to remediate CECs during the tertiary treatment and reuse of wastewater for augmenting surface water.
研究领域:
环境科学
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水处理
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化学工程
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毒理学
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Jiahui Li,Boxuan Peng,Siyuan Yu,Fangzheng Zhao,Qiqi Han,Shuaibing Huang,Fengmin Jin,Jinfeng Xing
With the rapid development of industry, water pollution has become one of the important problems that harm the ecological environment and human health. The extensive use and random discharge of dyes have caused serious damage to water resources. Hydrogel bead is a promising material for dye adsorption due to its advantages of rich functional groups and high specific surface area. Here, acrylic acid sodium salt (AAS) and 2-acrylamide-2-methylpropanesulfonic acid (AMPS) as monomers, N,N’-Methylene-bis-acrylamide (MBA) as crosslinking agent, sodium alginate (SA) as semi-interpenetrating network component, laponite as nano-clay additive, and single 2′,4′,5′,7′ −tetrabromofluorescein disodium salt (EY)/ Triethanolamine (TEOA)/ diphenyl iodonium hexafluorophosphate (DPI) as green light polymerization initiating system were combined to prepare composite hydrogel beads within 10 s under green LED irradiation. The composite hydrogels were characterized by infrared spectroscopy (FTIR), thermogravimetric analyzer (TG), scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The addition of sodium alginate and laponite can improve the mechanical properties of hydrogel beads. In the adsorption study of malachite green, the influence of time, temperature, dye concentration, pH, ionic strength, and other factors on the adsorption effect were investigated. The adsorption process was consistent with the second-order kinetic process and Langmuir adsorption. At room temperature, the highest adsorption capacity of the hydrogel beads for malachite green reached 829.63 mg/g. The PAAS-SL hydrogel beads maintained a high adsorption effect in the pH range (3–10), and the capacity reached 575.0 mg /g at pH 3, which had a good ability to resist low pH. In the adsorption–desorption experiments, the removal rate of PAAS-SL hydrogel beads for MG is still more than 80 % after 5 cycles. Our research provides a promising strategy for the efficient and rapid preparation of hydrogel beads with excellent properties.
研究领域:
环境科学
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材料科学
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水处理
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高分子化学
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产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·124603
·
IF 7.5
Qian Sun,Xiaoyun Ma,Yan Meng,Lijun Yang,Kaile Li,Mengyuan Xu,Jing Deng,Jie Zhu
The persistent occurrence of antibiotics in aquatic environments, along with the induced antibiotic-resistant bacteria (ARB) and resistance genes (ARGs), constitute a complex environmental issue encompassing both chemical contamination and biological risks. This study investigates the performance and mechanism of UV-LED/PDS and UV-LED/PMS systems for treating sulfachloropyridazine (SCP), a typical sulfonamide antibiotic, as well as ARB and ARGs. Results showed that both systems significantly enhanced SCP degradation, with UV-LED/PDS showing higher degradation efficiency under the tested conditions. The degradation rate increased with oxidant concentration over the range of 0.5–1.5 mM. Alkaline conditions favored SCP degradation in both systems. Quenching and probe experiments demonstrated that SO 4 ∙ - was the dominant reactive species for SCP removal, with HO· playing an auxiliary role, and the contribution of HO· increased slightly with increasing pH. The proposed degradation pathway was elucidated based on eleven intermediates identified by HPLC-MS, and acute toxicity changes were evaluated using ECOSAR. Furthermore, both systems effectively controlled ARB and ARGs, with UV-LED/PMS outperforming UV-LED/PDS, through the dominant contribution of SO 4 ∙ - , alongside a secondary role of HO·. Flow cytometry, SEM, and enzymatic assays confirmed that both systems compromised membrane integrity, induced morphological damage (roughening, shrinkage, collapse), and overwhelmed antioxidant defenses via oxidative stress, ultimately leading to cell damage. Weakly alkaline conditions resulted in slightly better inactivation performance than acidic conditions.
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Jing Wang,Qingfeng Fan,Lidong Kou,Huan Chen,Xing Xing,Wenjie Duan,Kai Jiang
Oxygen vacancies (OVs) and heterostructures of photocatalysts play crucial roles in photocatalysis driven by visible light. In this study, a novel photocatalytic textile was prepared by spraying heterostructures of OVs-rich bismuth oxide (BiO 2-x ) and urea-derived graphitic carbon nitride (UCN) on amine group-modified poly(acrylonitrile) nonwoven textile (APAN), and then studied for sulfamethazine (SMT) removal and bacterial ( S. aureus ) disinfection under irradiation of energy-efficient white light emitting diodes (LEDs). The optimal BiO 2-x , prepared within a much shorter time (i.e. 1 h), was actually a ternary mixture of NaBiO 3 -Bi 2 O 3 -BiO 2-x with rich OVs rather than pure BiO 2-x . Incorporation of UCN could help redistribute electrons and induce formation of more OVs, thereby improve the photocatalytic activity of the BU-0.2 hybrid (i.e. mass ratio of BiO 2-x /UCN = 1:0.2). The BU-0.2 could use full-spectrum white light (i.e. 380–760 nm) to achieve superior SMT removal in a wide pH range (pH 5.0–9.0) and in the co-presence of common water constituents. The enhanced photocatalytic performance of BU-0.2 was attributed to the formation of OVs and heterostructure, which could broaden light absorption, help charges separation, and favor adsorption and activation of molecular O 2 . Detection of reactive species demonstrated that 1 O 2 and holes were the dominant factors responsible for SMT removal. Spraying deposition of BU-0.2 on APAN could endow the resultant textile (i.e. APAN-BU-0.2) with excellent photocatalytic activity for SMT removal and bacterial disinfection under LED white light irradiation. The as-prepared photocatalysts showed promising application prospects in purification of emerging pollutants utilizing LED white light.
研究领域:
环境科学
·
材料科学
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光催化
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水处理
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纺织工程
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产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2024
·
IF 6.5
Yuhan Zhang,Nan Xiao,Yanjing Gao,Fang Sun
This study introduces a novel p -diethylene glycol monomethyl ether cinnamyl formamide-based disulfide monomer , N,N′ -(disulfanediylbis(2,1-phenylene)) bis(4-(4-(2-(2-methoxyethoxy)ethoxy) phenyl)-2-oxobut-3-enamide) (Mp-BSCF), designed to reduce the volume shrinkage of photosensitive resins and initiate monomer polymerization under 455 nm LED light irradiation. The photochemical properties and photoinitiation efficiency of Mp-BSCF are systematically investigated using UV–vis absorption spectroscopy , electron paramagnetic resonance (EPR) and real-time infrared spectroscopy . Although its weak absorption around 455 nm, Mp-BSCF can generate arylthiyl radicals under 455 nm LED irradiation, and then effectively initiate the polymerization of triethylene glycol dimethacrylate (TEGDMA)/A glycerolate dimethacrylate (Bis-GMA) system. Increasing Mp-BSCF addition enhances the final double bond conversion and maximum polymerization rate of the TEGDMA/Bis-GMA system, reaching up to 82.0 % and 2.02 % s −1 , respectively. Notably, Mp-BSCF significantly reduces the volume shrinkage of the photopolymerization system, with the addition of 10 % Mp-BSCF resulting in a 50 % reduction compared to the control system. This reduction is attributed to the dynamic reversible nature of the S S bond “breaking-recovery” and the intermolecular hydrogen bond interaction. Additionally, Mp-BSCF improves the thermal stability, friction resistance, and hardness of the TEGDMA/Bis-GMA photopolymerization system.
研究领域:
材料科学
·
高分子化学
·
光化学
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DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2023
·
IF 3.6
Jiawen Li,Jiawen Wang,Feifei Huang,Youjie Hua,Shiqing Xu,Ruoshan Lei
In pursuit of healthy lighting, the exploitation of high-quality Eu 2+ -activated phosphors available for near-ultraviolet light-emitting diode (NUV-LED) chip-based white LED (WLED) has fetched growing interest. Herein, a novel NUV-light excitable Rb 3 GdSi 2 O 7 : Eu 2+ phosphor is successfully synthesized via a high-temperature solid-state reaction method. The crystal structure of Rb 3 GdSi 2 O 7 is found to be hexagonal, belonging to space group P6 3 /mmc. The Rb 3 GdSi 2 O 7 : Eu 2+ phosphor exhibits a broad excitation band in the 300–450 nm wavelength range, and it emits strong yellow-green light with peak at 543 nm upon 365 nm excitation. Benefitting from the high structure rigidity of host matrix, Rb 3 GdSi 2 O 7 : Eu 2+ also possesses a desired luminescence thermal stability (423 K, 85.6%). The WLED device fabricated using a 365 nm chip and a blend of the as-prepared Rb 3 GdSi 2 O 7 : Eu 2+ yellow-green phosphor and commercial BaMgAl 10 O 17 : Eu 2+ blue phosphor displays an excellent color-rendering index of 95.9 at a low correlated color temperature of 4373 K. This work confirms the applicative potential of Rb 3 GdSi 2 O 7 : Eu 2+ in NUV-converted warm WLEDs, which may promote the development of high-color-quality healthy lighting.
研究领域:
材料科学
·
光学工程
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产品关联
DOI
高影响因子
MATERIALS RESEARCH BULLETIN
·
2026
·
IF 5.8
Li Zhang,Tong Yu,Hancheng Zhu,Meng Zhang,Ji Zhang,Xinzhao Zhang,Guorui Wang,Pengpeng Dai
A serious of orange-red Sr 2 TiSi 2 O 8 :Sm 3+ phosphors are synthesized and characterized. • The phosphor can reach a quantum yield of 47.8% along with excellent thermal stability. • Sm 3+ doped Sr 2 TiSi 2 O 8 can be used for white-LEDs. A family of orange-red-emitting Sr 2 TiSi 2 O 8 :Sm 3+ phosphors was fabricated through a conventional high-temperature solid-state reaction and comprehensively evaluated as candidates for white light-emitting diode (W-LED) applications. A systematic series of Sr 2(1- x ) TiSi 2 O 8 :2 x Sm 3+ compositions was obtained via a straightforward and economical synthetic procedure, and the phase purity, luminescence behavior, decay kinetics, and temperature-dependent stability were thoroughly examined. The composition Sr 1.98 TiSi 2 O 8 :0.02Sm 3+ which showed the best performance exhibited strong orange-red emission at 597 nm on pumping at 402 nm and showed reasonably good thermal stability between 298 K and 568 K. The photoluminescence output continually decreased as the temperature increased; however, the spectral shape and peak wavelength exhibited no shift. A peak internal quantum yield (IQY) of 47.8%, combined with satisfactory thermal stability up to 568 K, underscores the practical viability of these phosphors as a warm-orange spectral component in NUV-pumped trichromatic W-LED assemblies. Download: Download high-res image (241KB) Download: Download full-size image A new series of orange-red Sr 2 TiSi 2 O 8 :Sm 3+ phosphors was successfully synthesized using high-temperature solid-phase methods. The crystal structure, photoluminescence characteristics, lifetimes, and thermostability of Sr 2 TiSi 2 O 8 :Sm 3+ were thoroughly investigated.
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Zelong Zhang,Linli Shen,Huiling Zhang,Ling Ding,Guangzhan Shao,Xiaojuan Liang,Weidong Xiang
Currently, the application of all-inorganic cesium lead halide perovskite (CsPbX 3 , X = Cl, Br, I) quantum dots (QDs) is limited due to toxicity of lead and poor ambient stability. In our work, a series of Ti-doped CsPbI 3 QDs were successfully prepared in borosilicate glass (SiO 2 -B 2 O 3 -ZnO) by the melt quenching and in situ crystallization technique. The samples showed excellent water/thermal stability, and the tunable emission (650–695 nm) was controlled by different Ti contents and heat treatment temperatures. In particular, the optical properties of CsPb 1− x Ti x I 3 QDs@glasses (x ≤ 0.5) are superior to those of pristine CsPbI 3 QDs@glass. As a result, the wLED was assembled using red-emitting CsPb 1− x Ti x I 3 QDs@glasses and yellow-emitting Ce 3+ :YAG phosphor under excitation of InGaN blue chip, which demonstrated an outstanding luminous efficiency of 102.44 lm/W, a high color rendering index of 80.6. Particularly, Ti-doped CsPbI 3 QDs@glasses with red and far-red light are combined with a blue-chip to assemble an LED device, which exactly satisfies the lighting conditions of plant growth.
研究领域:
材料科学
·
光学工程
·
农业科学
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产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2026
·
IF 29.1
Ye He,Jiapeng Yang,Shouying Mu,Yunshu Luo,Enrou Mei,Junze Tong,Wenan Guo,Chao Zou,Yue Lin,Pengfei Tian,Xiaojuan Liang,Shuli Wang,Weidong Xiang
Quantum-dot (QD) color-conversion technology is considered a promising strategy for constructing a full-color micro-LED display. Perovskite quantum dots (PQDs) are the preferred luminescent materials for constructing color-conversion micro-LED pixels, but their poor environmental stability severely limits their practical application in micro-LED displays. Here, we design a novel submicron-sized PQD glass microspheres (PQDGMS) with high quantum yield and excellent stability for color conversion micro-LED displays. Kilogram scale (batch 2 kg) submicron-sized PQDGMS was prepared by a top-down strategy including melt-quenching, secondary recrystallization, and optimized submicronization processes. Ultra-stability of the PQDGMS was attributed to the passivation and self-healing effects of PQDs by AgBr additive, and the protection effect of the glass matrix around PQDs. The prepared PQDGMS has excellent environmental stability, with PL intensity maintained over 95% after immersion in water for 10 000 h, over 82% at a temperature of 100°C, and over 86% under continuous blue light irradiation (800 W m −2 ) for 240 h. We prepared the PQDGMS color conversion pixels in a patterned through-hole glass substrate via capillary filling assistance and constructed color conversion green and red micro-LED chips with external quantum efficiency of 24.8% and 16.7%, respectively.
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DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）