ORGANIC ELECTRONICS
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2019
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IF 3.495
Xin Qi,Ganghong Liu,Duo Wang,Ning Zhu,Yuqing Zhang,Zehao Zhang,Cuncun Wu,Xiangdong Li,Wei Luo,Yingqiang Li,Haozhe Hu,Zhijian Chen,Lixin Xiao,Shufeng Wang,Bo Qu
Interfacial modification as a feasible strategy to improve the properties of perovskite solar cells (PSCs) has been widely studied in recent years. In this work, PbCl 2 modification at the interface of SnO 2 /CH 3 NH 3 PbI 3 was used for CH 3 NH 3 PbI 3 -based planar PSCs. The introduction of PbCl 2 between SnO 2 and CH 3 NH 3 PbI 3 layers boosted the crystallization of perovskite film, which promoted the photovoltaic properties of corresponding PSCs. The open circuit voltage ( V OC ) and fill factor (FF) of the PbCl 2 -modified devices (1 mg/mL) were 1.11 V and 0.79, respectively, which were both higher than those of the reference devices without PbCl 2 (1.04 V and 0.76). Moreover, a steady-state power output efficiency exceeding 19% was obtained for the PbCl 2 -modified devices (1 mg/mL), which implied that PbCl 2 modification was an effective and low cost strategy for efficient PSCs.
研究领域:
材料科学
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光伏技术
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纳米科技
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表面与界面工程
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能源材料
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半导体器件
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功能材料
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Jieqiong Wang,Boxin Yu,Fengshuo Wang,Zhe Wang,Ming Xu,Yanping Wu,Hongyuan Zhang
Heavy metal ions (HMIs) pollution has become a significant threat to the global environment and agricultural safety. The accumulation of these metals in soil and crops may have a serious impact on human health. Therefore, it is of utmost importance to develop a rapid, reliable and highly sensitive detection platform. A self-supporting electrochemical sensor based on an interpenetrating twin ZIF-8/carbon nanofiber aerogel (ZIF-8(IT)/CNT-NFCA) was developed for the sensitive and simultaneous detection of Cd 2+ and Pb 2+ in soil and crop samples. Unlike traditional electrodes, this independent architecture eliminated the need for rigid conductive substrates and complex surface modifications. The freestanding 3D nanofiber network, reinforced by carbon nanotubes and embedded with twin-structured ZIF-8, provided a mechanically stable and highly conductive matrix with abundant accessible active sites. Under optimized differential pulse anodic stripping voltammetry conditions, the sensor exhibited wide linear ranges of 0.10–100 μg·L −1 for both Cd 2+ and Pb 2+ , with low limit of detection (LOD) 0.09 μg·L −1 and 0.05 μg·L −1 , respectively. Benefiting from the integrated structure, the sensor showed enhanced signal stability and resistance to electrode delamination under real sample testing. Applications in actual rice, wheat, soil, and water samples demonstrated high recovery rates and validated the sensor's reliability. This study provides a robust and portable sensing platform, offering promising prospects for field-deployable heavy metal ion monitoring in environmental and agricultural safety.
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Journal of Materials Chemistry A
·
2025
·Vol. 13
·期 29
·23560-23569
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IF 9.5
Pubao Peng,Yaru Gong,Wei Dou,Jiajun Nan,Yanan Li,Song Li,Yang Geng,Congmin Liang,Jiaqi Fan,Di Li,Dewei Zhang,Pan Ying,Yang Cao,Guodong Tang
SnSe demonstrates unparalleled potential in thermoelectric applications, combining non-toxicity, low cost, and abundant sources. Furthermore, polycrystals have good machinability and are easier to prepare. Here, we report a high peak ZT of 2.0 at 873 K in Pb and Er co-doped polycrystalline SnSe prepared through the hydrothermal method. An ultralow lattice thermal conductivity of 0.13 W m−1 K−1 at 873 K is obtained by introducing endogenous hetero-/homo-structural nanoprecipitates and Sn vacancies into the matrix to construct a multiscale scattering structure for phonons. Meanwhile, with the band alignment and flattening induced by Pb and Er co-doping, the effective mass is increased thus leading to a large Seebeck coefficient. Pb and Er co-doping not only optimizes the energy band structure of SnSe, but also optimizes the carrier concentration, thus simultaneously leading to enhanced electrical conductivity as well as enhanced electrical transport properties. Therefore, a high peak ZT of 2.0 is achieved in Pb and Er co-doped polycrystalline SnSe due to the markedly ultralow thermal conductivity and enhanced power factor. This work proposes a novel approach to synergistically regulate the electrical and thermal transport properties of polycrystalline SnSe-based thermoelectric materials through constructing endogenous hetero-/homo-nanostructures combined with band alignment.
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RENEWABLE & SUSTAINABLE ENERGY REVIEWS
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2025
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IF 16.3
Xiaolong Wang,Wenhao Li,Mingzhu Xie,Xiaowei Wang,Yong Shuai,Zhaolong Wang
As the demand for sustainable energy continues to rise, the development of high-efficient hydrogen (H 2 ) production via water electrolysis based on precise bubble manipulation is garnering significant attention. This study presents a novel three-dimensional (3D) micro-cone engineered electrode to enhance the ion exchange rate and catalytic active site regeneration during the electrochemical water splitting process, thereby improving H 2 production rates. The unique micro-cones enables precise manipulation of H 2 bubble behavior, which achieves directional transport from nucleation to detachment at the top within a mere 224 ms. Simultaneously, the bubble manipulation performance of micro-cones with varying geometric configurations and dimensional parameters is investigated. The optimal bubble manipulation performance is achieved when the micro-cones have a circular base with a diameter of 100 μm, a height of 300 μm, and an array center distance of 100 μm. The performance of the 3D micro-cone engineered electrode outperforms conventional commercial electrodes, with its capacitance ( C dl ) value reaching 35.1 mF cm −2 , which is significantly higher than those of Ni foam and Ni-CP. Additionally, under a 1.7 V vs. RHE condition, the electrode achieves a current density of 80 mA cm −2 , with a H 2 collection rate 32.3 % higher than that of a Ni foam under identical conditions. Large-scale outdoor experiments driven by solar energy further confirm the scalability and stability of the micro-cone engineered electrodes, which is capable of producing substantial H 2 quantities over extended periods without bubbles blockage. The large-area micro-cone electrodes, when operated continuously under high outdoor current density, still exhibit excellent H 2 production and bubble directional manipulation stability. This research highlights the transformative impacts of advanced electrode design on water electrolysis efficiency and H 2 bubbles manipulation, offering new insights for ultra-high efficient sustainable H 2 production.
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ANALYTICA CHIMICA ACTA
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2026
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IF 6.1
Junyuan Shi,Zihang Yin,Dejin Lin,Dingfeng Wang,Siting Peng,Wendi Xiao,Houwen Hu,Jiong Cheng,Da Chen
The pervasive issue of pharmaceutical overuse in agriculture and veterinary practice has led to the alarming accumulation of drug residues within the global food supply chain, posing a direct and escalating threat to consumer safety. Among these contaminants, compounds such as chlorogenic acid (CGA) and tinidazole (TNZ) are of particular concern due to their potential to provoke allergic responses and cause long-term adverse health effects. There is an urgent need for the development of rapid and reliable detection techniques capable of on-site monitoring to effectively mitigate these risks and ensure food safety. Herein, our work develops an innovative ratiometric sensing strategy that utilizes the dual-excitation properties of nitrogen-doped carbon dots (N-CDs) to simultaneously detect CGA and TNZ. Remarkably, as a fluorescent nanoprobe, N-CDs are capable of detecting CGA over a concentration range of 0.036-40 μM with a limit of detection (LOD) of 36 nM, which is attributed to static quenching (SQE) and the inner filter effect (IFE). Differently, the addition of TNZ results in fluorescence quenching of N-CDs via localization of inner filter effect (L-IFE), presenting the LOD of 68 nM within the 0.068-25 μM range. Furthermore, a portable smartphone-assisted platform which incorporates the N-CDs/PVA composite film successfully enables visual detection of CGA and TNZ with satisfactory recoveries in real samples. These results suggest that the developed portable smartphone-assisted fluorescence platform enables accurate dual-target detection of CGA and TNZ while offering outstanding stability and reproducibility suitable for on-site applications. Consequently, our methodology presents a versatile and practical strategy for real-time pharmaceutical residue screening, significantly advancing food safety monitoring capabilities.
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PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
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2026
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IF 19.9
Jiejun Ren,Boheng Dong,Yu Liao,Longyun Liu,Churen Zhang,Xiaopeng Zhou,Huiping Liu,Fan Liu,Liangjun Chen,Yuhua Wang
Perovskite nanocrystals (NCs) are highly attractive for high-definition displays. And yet, the weakly bound conventional surface ligands on perovskite NCs leads to the poor processibility, impeding their practical application. Herein, bis(2-methacryloxyethyl)phosphate (BMP) was employed as a functional ligand to prepare BMP-modified CsPbBr 3 (BMP-CPB) NCs with exceptional optical properties and photo-crosslinking capability. The phosphate group strongly coordinates with the surface Pb atoms, while the methacrylate groups undergo photo-crosslinking reaction. Upon ultraviolet light irradiation, free radicals initiate addition reactions across the C═C bonds of BMP ligands, ultimately leading to the formation of a 3D cross-linked polymer network. Accordingly, BMP-CPB NCs show high processability compatible with photopatterning, screen printing, and 3D printing. The superior processibility and outstanding optical properties endow them with great potential in optoelectronic devices, the BMP-CPB-based light-emitting diodes (LEDs) achieved a maximum luminance of 51181.04 cd/m 2 and an external quantum efficiency (EQE) of 18.6%. The BMP-CsPbX 3 -based white LED emits bright white light, achieving a high luminous efficiency of 58.6 lm/W and a wide color gamut covering 124% of National Television System Committee (NTSC) standard. Taking WLED array as backlight source, the constructed liquid-crystal display (LCD) prototype device demonstrates the significant potential of BMP-CPB NCs in high-quality display technologies.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Syed Muhammad Zaigham Abbas Naqvi,Niu Qunfeng,Niu Jiaqi,Muhammad Awais,Jiandong Hu,Wang Li
High quality MAPbCl 3 perovskites were developed using a reliable method to achieve the uniform and well-ordered crystals to reflect the intrinsic properties of the material subsequently. This involved the optimizing parameters such as precursor concentration, temperature, and growth rate to ensure reproducibility and scalability. SEM, TEM and FTIR verified the presence of the desired perovskite phase indicated an average size of 78.33 nm and clear lattice fringes with an interplanar spacing of approximately 0.6213 nm using SEM and TEM images, respectively. FTIR presented the adsorption band around 2991 cm −1 in perovskite, assigned to the CH 3 NH 3 + organic molecular cation's highest frequency of CH 3 and NH 3 stretching vibrations, an integral part of MAPbCl 3 . Raman spectroscopy identified the molecular composition and crystal assembly of the material to understand the phonon modes in MAPbCl 3 , paramount in terms of improving and restructuring it into nanofibers. The simulation results using DFT demonstrated that the computational model well captured MAPbCl 3 ’s structural, electronic, and optical properties. The intricate coupling between the electron density gradients, medium strength, and conduction band structure further validated the robustness of the approach. The achievement of this convergence using a force threshold of 0.01 eV/Å and an energy tolerance of 10 −6 eV confirmed that the structure is optimized to a sufficiently low-energy state. By addressing all critical aspects, from structural optimization to charge density analysis, the results advocate that the computational framework employed is sufficient to comprehensively explain the structure and properties of single crystal MAPbCl 3 nanofibers, ensuring their potential for advanced technological applications.
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COMPUTERS AND ELECTRONICS IN AGRICULTURE
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2026
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IF 10.3
Liru Yan,Bianxiang Zhang,Wei Zhou,Chao Feng,Caihong Zhang,Yan Zhang,Shaomin Shuang,Lihong Shi
Highly-intelligent user-friendly sensing strategies are becoming desperately demanded and indispensable in under-developed nations and resources-insufficient areas. Herein, an intelligent sensing platform has been successfully established incorporating smartphone with machine vision and deep learning function, 3D-printed handheld device, and paper microfluidic chip stained with tri-emission ratiometric-fluorescence (FL) carbon dots (TCDs). The intelligent system can quantify zinc ion (Zn 2+ ) and ethylenediaminetetraacetic acid (EDTA) only through a single-step operation on smartphone. TCDs, engendering bright blue and cyan FL as well as weak red one at 370 nm excitation, were prepared hydrothermally using tartaric acid and alizarin carmine. As-prepared TCDs exhibit continuous FL color transformation from blue to purple to blue with the addition of Zn 2+ and EDTA. Subsequently, TCDs-based paper chip is explored to enable field-portable sequential discrimination of Zn 2+ and EDTA. Intriguingly, the proposed sensor is utilized for fast and intelligent quantification of Zn 2+ and EDTA in soil filtrate, plant sap and tap water with a low detection limit of 3.8 μM and 7.9 μM, as well as wide linear correlations of 0–280 µM and 0–560 µM, respectively. It is eagerly anticipated that our methodologies will become the strong impetus for new round of technological transformation for analyte assay.
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DALTON TRANSACTIONS
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2026
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IF 3.3
Zong-Jie Zhao,Yu-Zheng Yan,Jia-Jian Fu,Hong-Yan Wu,Jian-Han Zhang
Two new all-inorganic lead halide phosphites, Pb3(HPO3)Cl4·H2O and Pb3(HPO3)2Cl2·H2O, have been synthesized and structurally characterized as layered frameworks constructed from distorted Pb–O(H2O) polyhedra linked by pseudo-tetrahedral HPO3 groups, with interlayer Cl− ions providing charge balance and imparting intrinsic structural anisotropy. UV–vis diffuse reflectance spectra analyzed using Tauc's fitting show that both compounds are direct wide-band-gap materials, with optical band gaps of 4.20 eV for Pb3(HPO3)Cl4·H2O and 4.14 eV for Pb3(HPO3)2Cl2·H2O, indicating good transparency in the UV region. Birefringence measurements at 546 nm using a Berek compensator yield Δn ≈ 0.033 and 0.057 for Pb3(HPO3)Cl4·H2O and Pb3(HPO3)2Cl2·H2O, respectively, demonstrating useful optical anisotropy for polarization-dependent applications. Density functional theory calculations reproduce the wide-gap insulating character of both phases and predict birefringence values in good agreement with experiment, supporting their identification as phosphite-based candidates for UV/visible birefringent optical crystals.
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RARE METALS
·
2026
·
IF 11
Chunshen Li,Yuexin Zhu,Wendong Nie,Haomiao Zhu,Peng Zhang
en Narrowband near-infrared (NIR) phosphor-converted light-emitting diodes (pc-LEDs) featuring low full-width at half maximum (FWHM) and high conversion efficiency are crucial for chemical content evaluation, light therapy, and bioimaging. Recently, Yb 3+ doped CsPbCl 3 nanocrystals (NCs) have emerged as promising phosphors for NIR pc-LEDs, delivering narrowband 980 nm emission with an FWHM below 50 nm and a photoluminescence quantum yield (PLQY) exceeding 100%. However, the practical employment of CsPbCl 3 : Yb 3+ NCs is limited by their poor thermal stability. In this work, we present a high-temperature stable, melt-grown CsPbCl 3 : Yb 3+ single crystal (SC) and narrowband NIR pc-LEDs fabricated from CsPbCl 3 : Yb 3+ powder and violet LED chips. Our pc-LEDs achieve a low FWHM of 46.81 nm and a high conversion efficiency of 2.44% at a drive current of 20 mA. More importantly, our pc-LEDs exhibit exceptional thermal stability, retaining 98.2% of their PL emission intensity at 360 K. Finally, these NIR pc-LEDs successfully demonstrate applications in night vision, vein imaging, non-destructive testing, and the detection of early fruit bruises. This work underscores the significant potential of narrowband 980 nm pc-LEDs based on CsPbCl 3 : Yb 3+ crystal for diverse applications. 摘要 zh 具有窄半峰全宽和高转换效率的窄带近红外荧光粉转换发光二极管在化学成分分析、光疗及生物成像等领域具有关键应用价值。近年来,Yb 3+ 掺杂CsPbCl 3 纳米晶已经成为近红外荧光粉转换发光二极管的潜在荧光材料,其可实现980 nm窄带发射,低于50 nm的半峰全宽和超过100%光致发光量子产率。然而,CsPbCl 3 : Yb 3+ 纳米晶的热稳定性较差,严重限制了其实际应用。本研究通过熔融生长法制备了高温稳定的CsPbCl 3 : Yb 3+ 单晶,并利用CsPbCl 3 : Yb 3+ 粉末与紫光发光二极管芯片制备了窄带近红外荧光粉转换发光二极管。在20 mA驱动电流下,该荧光粉转换发光二极管的半峰全宽低至46.81 nm,转换效率高达2.44%。更重要的是,其展现出优异的热稳定性,在360 K环境下仍能保持98.2%的光致发光强度。最后,该近红外荧光粉转换发光二极管在夜视成像、静脉探测、无损检测及水果早期损伤识别等场景中实现了成功应用。本研究证实,基于CsPbCl 3 : Yb 3+ 晶体的980 nm窄带近红外荧光粉转换发光二极管在相关领域具有广泛的应用前景。
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ACS Nano
·
2026
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IF 16
Shuhan Zhang,Shuo Wang,Qilin Wei,Xin Li,Dan Huang,Feng Liu,Wengang Bi,Zhaolai Chen,William W. Yu,Jiang Tang,Liang Wang
Quantum-cutting CsPbCl3:Yb perovskites represent a compelling class of emitters for high-performance near-infrared (NIR, >950 nm) light-emitting diodes (LEDs). The intrinsic anisotropy in dielectric response, surface termination chemistry, and strain fields across different crystallographic facets significantly influences perovskite optoelectronic performance. However, precise control over facet-selective growth in CsPbCl3:Yb thin films remains challenging due to pronounced disparities in surface and formation energies. Here, we introduce a thermal evaporation strategy to achieve controlled crystallographic orientation of CsPbCl3:Yb films for enhanced NIR emission. By modulating thermodynamic and kinetic processes, we enable selective growth of (100)- and (110)-oriented films. Comparative analysis reveals that (110)-oriented films provides a more favorable dielectric environment, resulting in stronger exciton binding and enhanced energy transfer to Yb3+ ions. Leveraging this facet-guided design, our optimized device delivers an external quantum efficiency (EQE) of 7.05% and a radiance of 639 mW/sr/m2 for vacuum-processed NIR (>950 nm) LEDs.
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MICROCHEMICAL JOURNAL
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2026
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IF 5.1
Jinli Lin,Xueying Wu,Fangkai Du,Lirong Jiang
The presence of fluoroquinolone antibiotic residues brings significant threats to food safety and human health. This situation has necessitated the development of rapid visual detection methods for identifying these residues in food products. This study constructed a self-calibrating ratiometric fluorescent sensor based on europium and deep eutectic solvent complex (Eu-DES) for the sensitive visual detection of levofloxacin (LEV). By mixing Eu 3+ with the DES (oxalic acid:choline chloride = 1:1) ligand at room temperature, a stable red fluorescence at 623 nm was successfully achieved in the Eu-DES system. Upon the addition of LEV, the Eu-DES induced a red-shift fluorescence of LEV, enabling a self-calibrating ratiometric fluorescent response to LEV with a wide linear range (0.5–100 μM) and a low detection limit (86.50 nM, S/N = 3). Furthermore, integrating Eu-DES into a gel matrix and combining it with smartphone-assisted RGB color analysis enabled quantitative LEV detection through multicolor shifts from red to green. This approach was successfully applied to detect LEV in honey and milk with high sensitivity and good recovery (92.7%–106.4%). The Eu-DES-based detection platform developed in this study provides a powerful tool for on-site LEV detection in actual food samples, promising to advance rapid food safety testing technologies.
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危险品化学品经营许可证（带存储）