SOLAR ENERGY MATERIALS AND SOLAR CELLS
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2025
·
IF 6.3
Yinghu Sun,Jiahao Liu,Shenghua Ma
With the advancement of photovoltaic technology, the mechanical and electrical reliability of Ag electrodes has become increasingly critical, emerging as a key bottleneck limiting module lifetime and power output. This study addresses the performance optimization of glass frits in the front-side Ag paste of tunnel oxide-passivated contact (TOPCon) solar cells by proposing a hybrid high and low temperature glass frit system to enhance solder joint reliability. Two base glass frits, L1 (high melting point) and G1 (low melting point), were prepared via the melt-quenching method. The hybrid glass frits, designated as M1, M2, and M3, were obtained by blending the base frits in mass ratios of 5:5, 7:3, and 3:7, respectively. A systematic investigation was conducted on the physicochemical properties, thermal behavior, and wetting characteristics of the hybrid glass frits, as well as their effects on the interface structure of the Ag electrode, grid line morphology, and soldering performance. Results indicate that the hybrid glass frits effectively broaden the melting range, optimize high-temperature viscosity and wetting behavior, and significantly improve the compactness and uniformity of the Ag-Si interface. By precisely adjusting the mixing ratio, the properties of multiple glass components can be synergistically combined to enhance the adhesion between the busbar and the Si substrate while dynamically optimizing the bonding speed between the solder and the Ag layer. This approach markedly improves the soldering reliability of solar cells. Among the samples, M2 (L1:G1 = 7:3) demonstrated the best soldering performance, with an average pull force of 4.304 N and the highest practical soldering rate, effectively enhancing the reliability of busbar soldering. This study offers a new direction for material design in photovoltaic Ag pastes.
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JOURNAL OF MATERIALS SCIENCE
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2025
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IF 3.9
Wang Xi,Wu Juan,Sun Haibin,Lu Bingyan,Huang Jingjing,Liu Qiaoling,Li Tingting
Biofilms pose a significant challenge to public health, fostering persistent infections that are notoriously difficult to eradicate. Their resilience stems partly from the inadequate penetration of conventional antibacterial agents into these structured microbial communities. To address this issue, we have developed a novel magnetite iron oxide Janus nanoparticles (JNPs), harnessing the magnetic field assistance for targeted biofilm elimination. In which, natural tannic acid (TA) and chitosan (CS) were coated on IONPs for improved antibacterial property and biocompatibility. Subsequently, the surfaces were functionalized with epoxy chloropropane and butanediamine, creating anchor points for the deposition of silver nanoparticles (AgNPs). Subsequently, AgNPs were embedded via an in situ reduction process, utilizing polyvinyl pyrrolidone (PVP) to precisely control the morphology of the Ag-armed magnetite JNPs. Remarkably, IONPs@BCS/Ag exhibited dual-responsive release characteristics, sensitively adjusting their Ag + release in response to both oxygen levels and pH variations within the biofilms microenvironment. This system leveraged both stimulus-responsiveness and magnetic guidance to deliver exceptional antimicrobial performance against both planktonic bacteria and established biofilms. Critically, the superparamagnetic nature of IONPs@BCS/Ag enabled enhanced penetration into biofilms under an external magnetic field, facilitating the efficient delivery of AgNPs. Furthermore, the sustained release of Ag + triggered by low pH and oxygen levels within the biofilm triggered the generation of reactive oxygen species (ROS), which not only accelerated the decomposition of the biofilm matrix but also disrupted the integrity of microbial communities. In summary, the IONPs@BCS/Ag magnetite JNPs, augmented by an external magnetic field, demonstrated enhanced anti-biofilm capabilities, offering immense potential as a potent weapon against biofilm-associated infections. Graphical abstract
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高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2021
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IF 8.067
Lin Zhang,Nuomei Li,Qiuchen Ma,Jiahui Ding,Chuang Chen,Zhaocheng Hu,Weiwei Zhao,Yufeng Li,Huanhuan Feng,Mingyu Li,Hongjun Ji
A series of large-area, flexible and transparent ultraviolet (UV) photodetectors (PDs) based on Ag nanowire (NW)@ZnO nanorods (NRs) are fabricated by an inexpensive, facile and effective approach. These Ag NW@ZnO NRs are successfully synthesized using a two-step method in an oil bath with a high surface-to-volume ratio and good crystallinity. The PDs are fabricated by drop-coating with different drop-coating times on the surface of polyethylene terephthalate (PET) coupled with Au electrodes. By optimizing the cross-linked network of Ag NW@ZnO NRs, PD2 with a size greater than 25 mm exhibits excellent photoresponse under UV light illumination of 365 nm (1.3 mW cm - 2 ) with a bias of 5 V: a high sensitivity of over 10 3 , and a much shorter rise/decay time of 2.6 s/2.3 s. Simultaneously, the detector exhibits an average transmittance of more than 70% in the visible light region, as well as good flexibility and excellent mechanical stability under a bending angle of 120° over 1000 circles bending. These integral advantages have significant potential for practical applications and mass production.
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Journal of Advanced Ceramics
·
2021
·Vol. 10
·期 4
·860-870
·
IF 6.707
Xu Wenjing,Zhang Zhongwei,Liu Chengyan,Gao Jie,Ye Zhenyuan,Chen Chunguang,Peng Ying,Bai Xiaobo,Miao Lei
Eco-friendly SnTe based thermoelectric materials are intensively studied recently as candidates to replace PbTe; yet the thermoelectric performance of SnTe is suppressed by its intrinsically high carrier concentration and high thermal conductivity. In this work, we confirm that the Ag and La co-doping can be applied to simultaneously enhance the power factor and reduce the thermal conductivity, contributing to a final promotion of figure of merit. On one hand, the carrier concentration and band offset between valence bands are concurrently reduced, promoting the power factor to a highest value of ∼2436 µW·m −1 ·K −2 at 873 K. On the other hand, lots of dislocations (∼3.16×10 7 mm −2 ) associated with impurity precipitates are generated, resulting in the decline of thermal conductivity to a minimum value of 1.87 W·m −1 ·K −1 at 873 K. As a result, a substantial thermoelectric performance enhancement up to zT ≈ 1.0 at 873 K is obtained for the sample Sn 0.94 Ag 0.09 La 0.05 Te, which is twice that of the pristine SnTe ( zT ≈ 0.49 at 873 K). This strategy of synergistic manipulation of electronic band and microstructures via introducing rare earth elements could be applied to other systems to improve thermoelectric performance.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2023
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IF 15.1
Qianxiao Fan,Wendi Zhang,Yilong Jin,Dongmei Zhang,Xianglong Meng,Wanxiong Peng,Jinhui Wang,Jinshan Mo,Kai Liu,Lehao Liu,Meicheng Li
All-solid-state lithium batteries employing sulfide solid electrolyte are promising candidates for next generation lithium batteries. Nevertheless, the unstable interface of sulfide solid electrolyte and Li metal has limited the lifespan of sulfide solid state lithium metal batteries. Herein, a composite protection layer composed of Li-Ag/LiF (LAF) is formed on Li metal surface by the in-situ reaction of silver-fluoride (AgF) and Li metal to solve the instability issue of the Li 6 PS 5 Cl/Lithium interface. The Li-Ag particles act as nucleation sites for Li deposition and LiF can avoid the growth of lithium dendrites. The density function theory (DFT) calculation results show the lithiophilic of Li-Ag alloys and high interfacial energy of LiF/Li 6 PS 5 Cl interface, proving the superiority of the LAF protection layer. The critical current density of the Li-LAF/ Li 6 PS 5 Cl/ LAF-Li symmetric battery is 1.6 mA cm −2 and the battery achieved a long lifespan of over 3000 h at 0.1 mA cm −2 and 0.1mAh cm −2 at room temperature. In addition, a high discharge capacity of 139.1mAh/g is obtained in the LiNbO3@LiCoO2/ Li6PS5Cl/ LAF-Li full cell. This work provides a feasible strategy for the interface modification of sulfide all-solid-state Li metal batteries.
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高影响因子
ACS Applied Energy Materials
·
2020
·
IF 4.473
Mohsin Ali Marwat,Muhammad Yasar,Weigang Ma,Pengyuan Fan,Kai Liu,Daju Lu,Yi Tian,Chanatip Samart,Baohua Ye,Haibo Zhang
The development of innovative dielectrics by considerably improving their energy densities of discharge is important for current electronic power systems. We present here newly designed heterogeneous sandwich structure nanocomposites (i.e., P(VDF-HFP)-xwt%Ag@BN nanosheets (Ag@BNN)/PEI-P(VDF-HFP)). The outer ferroelectric-type P(VDF-HFP) layers enhanced the dielectric displacement, while PEI reduced the losses due to its linear characteristic. Besides, the use of Ag@BNN as nanofillers improved the dielectric displacement, as well as breakdown strength. Consequently, the ideal sandwich structure achieved a significant energy density of 11.3 J/cm3 and decent charge–discharge efficiency of 80% at about 510 MV/m. This discharge energy density is the highest reported until now when charge–discharge efficiency of ≥80% is considered as the threshold. In-depth analysis revealed that comparatively higher Dmax – Dr (i.e., 4.7 μC/cm2), as well as the utmost breakdown strength (i.e., 510 MV/m), assisted in achieving this relatively higher discharge energy density. The finite element simulation demonstrated the efficacy of using Ag@BNN over BNN as nanofillers; i.e., it showed diverged electric field vectors near Ag nanoparticles, optimum electric field distribution between the sandwich structure layers, and improved dielectric displacement, in comparison with unmodified BNNs. The ideal sandwich structure also showed a short discharge time of 9.02 μs, a high power density of 0.165 MW/cm3, and an excellent lifetime until 40 000 cycles. This study shows that heterogeneous sandwich-structured nanocomposites with a surface decorated Ag@BNN nanofillers can be used in advanced dielectrics and pulsed power devices.
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International Journal of Electrochemical Science
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2023
·Vol. 13
·期 6
·5513-5521
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IF 1.5
Feng Xiang,Wei-Ping Gan
In this study, a new Ag-Te doped glass frits were used to prepare silver pastes in order to improve the electrical properties of silicon solar cells. A set of silver pastes was formulated to investigate the effect of the doping proportion on the electrical properties of the silicon solar cells. The silver paste with 5wt% dopant increased the photovoltaic conversion efficiency of silicon solar cells by 0.199% compared to the increase achieved using the paste without the dopant. This effect could be attributed to the addition of dopant, which increased the size and number of Ag crystallites on the silicon wafer. The size and number of Ag crystallites were the major factors controlling the contact resistance between the silver electrode and the silicon wafer, and series resistance of solar cells. When the dopant proportion reached 10wt% or 15wt%, the p-n junction broke due to the oversized Ag crystallites embedded in the p-n junction. Thus, the leakage current was observed, and this current degraded the electrical properties of the silicon solar cells. Therefore, the proper proportion of Ag-Te doped glass frits was necessary to obtain the optimal the silicon solar cells.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Min Chen,Wenhao Pang,Ziyuan Zhao,Ning Cai,Jumei Li
Surface-enhanced Raman scattering (SERS) has emerged as a highly effective technique for ultra-sensitive chemical analysis, enabling the detection of trace amounts of organic pollutants (OPs) through detailed spectral information. In this study, we propose a simple in situ deposition method to fabricate a hybrid SERS substrate combining graphite-phase carbon nitride (g-C 3 N 4 ) with Ag nanoparticles (Ag NPs). The size and distribution of the Ag NPs were finely tuned by adjusting the mass of AgNO 3 . The optimized g-C 3 N 4 /Ag composite exhibited excellent performance for SERS detecting methylene blue with a detection limit of as low as 2.81 × 10 −9 M. The enhanced SERS activity can be attributed to the plasmonic effect of the densely packed Ag NPs and the adsorption properties of g-C 3 N 4 . Furthermore, the substrate demonstrated excellent reproducibility, good uniformity and long-term stability. Additionally, when integrated with machine learning using a Random Forest algorithm, the system accurately identified four similar OPs—methylene blue, crystal violet, rhodamine 6 G, and thiram —with a classification accuracy of above 99.5 %. This work highlights the potential of combining SERS with machine learning for effective environmental and food safety monitoring.
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高影响因子
ANALYTICA CHIMICA ACTA
·
2026
·
IF 6
Jiaxing Xie,Fan Ge,Xinyi Yan,Suyu Ren,Yan Wang,Feng Tan
Background The diffusion gradient in thin-films (DGT) device is widely used for in situ measurement of pollutants in aquatic environments, offering high enrichment efficiency and robustness to environmental variations such as temperature and hydrodynamics. These characteristics make DGT particularly suitable for monitoring a diverse array of trace organic contaminants in waters. However, long-term deployment is often compromised by biofilm formation on the sampling outer membrane, which can obstruct analyte diffusion and lead to underestimation of analyte concentrations. This study addresses the need for a biofouling-resistant DGT device that maintains accuracy during extended field applications. Results A novel DGT device incorporating an antifouling Ag/polydopamine-modified polyethersulfone (Ag/PDA-PES) membrane was developed. The modified membrane demonstrated dual functional improvements: a 40 % reduction in water contact angle, indicating enhanced hydrophilicity, and strong antimicrobial efficacy, evidenced by an inhibition zone of 1165 μm ± 110 μm against Escherichia coli , while maintaining diffusion characteristics comparable to the original PES membrane. In extended deployment in both simulated and natural waters, the Ag/PDA-PES membrane effectively inhibited biofilm formation and maintained stable analyte diffusion coefficients over time compared to the unmodified membrane. The DGT devices showed constant sampling performance across varying pH (5.0–9.0), ionic strength (0–200 mM NaCl), and dissolved organic matter levels (0–20 mg/L). Field validation confirmed the device reliability, with measured total antibiotic concentrations (692–1062 ng/L) consistent with grab sampling. Significance This work signifies a step forward in DGT passive sampling technology by integrating antifouling properties directly into the membrane, thereby enabling accurate long-term monitoring of pollutants in biofilm-prone waters. Moreover, this study provides a promising strategy for improving the reliability of long-term DGT sampling, with meaningful implications for the precise monitoring and ecological risk assessment of other emerging pollutants.
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PubMed
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2018
·
IF 3.235
Yue Li,Wanwan Li,Yanxiang Luo,Minhua Fang,Xiaolin Yao,Miao Shui,Jie Shu,Yuanlong Ren
K x Cu 1−x O 1−γ (0 ≤ x ≤ 0.12) and K 0.08 Cu 0.92 O 1−γ anode materials are synthesized via a simple ethylene glycol assisted sol-gel method and characterized by X-ray diffraction, Scanning Electron Microscopy, High-resolution/Transmission Electron Microscopy, Energy Dispersive Spectroscopy and Select Area Electron Diffraction . The introduction of potassium element improves the electro-chemical performance of CuO greatly, especially for x = 0.08. After Ag coating, K 0.08 Cu 0.92 O 1−γ @Ag anode displays superior electro-chemical performance with excellent reversible capacity, cyclic performance and rate capability. It delivers a capacity of 804.3 mA h g −1 even at the 50th cycle. The role played by the K element doping and Ag coating are fully discussed.
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高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2017
·
IF 5.401
Ping Chen,Aiwu Zhao,Jin Wang,Qinye He,Henghui Sun,Dapeng Wang,Mei Sun,Hongyan Guo
Surface plasmon-assisted catalytic reaction of p–aminothiophenol (P-ATP) to p-nitrothiophenol (P-NTP) on ultrasensitive magnetic Au@Ag nanoparticles (Fe 3 O 4 /Au@Ag NPs) has been observed by surface-enhanced Raman scattering (SERS). The as-prepared magnetic nanoparticles integrate magnetic and desired plasmonic on the same nanostructure, show great potential for simultaneous magnetic separation and SERS-based catalytic analysis. In acid media, high concentration of nitrite ion triggered the P-ATP molecules quickly transform into P-NTP on Fe 3 O 4 /Au@Ag NPs. These unique attributes enable in-situ SERS monitoring nitrite-triggered oxidation reactions of P-ATP to P-NTP and the subsequent NaBH 4 -drived reduction reactions of P-NTP to P-ATP on Fe 3 O 4 /Au@Ag could achieve under optimized condition. Moreover, this circulated reversible redox process could provide a circular and efficient approach to detection of nitrite ion. Considering this method without sample pretreatment and can circulate many times, indicating that it is a promising method in-situ fast detection nitrite ion.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Wanlin Qin,Xianliang Li,Yuchi Zhang,Le Han,Zhijin Cheng,Zhijie Li,Yan Xu
The development of electrocatalysts that show multifunctionality towards efficient sensing and energy applications are of great significance. Herein, we report a rational design of photochemical deposition of Ag nanoparticles (Ag NPs) on ZIF-67-decorated carbon nanotube (Ag NPs/ZIF-67 @CNT) hybrid, which exhibits dual-functional capabilities for both effective enzymeless glucose detection and electrocatalytic water oxidation . The distribution of Ag NPs on the ZIF-67-functionalized CNT can be optimized by adjusting the concentration of Ag + aqueous solution during the light illumination process. The optimized Ag NPs/ZIF-67 @CNT composite showed superior glucose-sensing capability with a low determination limit of 0.46 μM (S/N = 3), high sensitivity of 469.4 μA·mM −1 ·cm −2 , wide linearity detection range (0.010–7.0 mM) and short response time (less than 5 s). Also, the Ag NPs/ZIF-67 @CNT composite acting as potential electrocatalyst possessed an overpotential of 286 mV with a Tafel-slope of 80.75 mV dec −1 at 10 mA·cm −2 for high durability water-oxidation reaction. This work provided a feasible way to prepare Ag NPs decorated ZIF-67/CNT with modulated bifunctional catalytic performances via photochemical reduction strategy, which can also provide effective guidance for designing other multifunctional electrocatalysts .
研究领域:
材料科学
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电化学
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生物传感
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能源催化
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纳米医学
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高影响因子
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