JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Yanlin Pan,Dongliang Zheng,Jianxin Chen,Jun Zhou,Rui Wang,Xingyu Pan,Xiaobo Hu,Shaoqiang Chen,Pingxiong Yang,Jiahua Tao,Junhao Chu
The vapor transport deposition (VTD) processing is one of the most promising techniques to fabricate quasi-one-dimensional antimony selenosulfide (Sb 2 (S,Se) 3 ) photovoltaic materials with micrometer-scale grains and preferred crystal orientations . However, current researches rarely involve the effect of evaporation source on the film growth by VTD. Herein, we adopt Sb 2 (S,Se) 3 tablets as evaporation sources to develop Sb 2 (S,Se) 3 solar cells for the first time. We find that increasing the evaporation source area can effectively improve the deposition rate of Sb 2 (S,Se) 3 films, leading to an enhancement of the (221) preferred orientation and columnar large grains of the absorber layers, further improves the device photovoltaic performance . With fine-tuning of the evaporation source area, the optimized Sb 2 (S,Se) 3 solar cells show a high efficiency up to 7.6%. This study proposes a unique strategy to improving the quality of low-dimensional materials and a deeper understanding of the growth mechanism via vacuum methods.
研究领域:
材料科学
·
太阳能技术
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DOI
高影响因子
Laser & Photonics Reviews
·
2026
·
IF 9.7
Yiming Zhao,Artem V. Kuklin,Jiahui Hou,Mingqi He,Lyudmila V. Begunovich,Han Zhang,Ying Li,Hans Ågren,Lingfeng Gao
Along with the increased attention of core–shell heterojunction quantum dots (QDs), there have been recent strong efforts to improve their practical applications by developing the synthetic approaches. In this work, uniform Te@Se core–shell QDs have been successfully fabricated via combining liquid-phase exfoliation and epitaxial growth methods, where the similar lattice structures of the materials from the same main group can effectively solve the lattice mismatch issue. Theoretical calculations reveal that the Te@Se material is a Type-I heterojunction with favorable initial electron transfer from core Te to shell Se upon formation. The photo-response performance of Te@Se QDs is systematically investigated by producing photoelectrochemical type photodetectors in low concentration electrolytes (0.1–10 mM), for which optimized photocurrent density (32.63 µA/cm 2 ) and photoresponsivity (1564 µA/W) could be achieved. The device also exhibits fast response and excellent stability, which could overcome instability issues in high-concentration electrolytes and expand the practical applications.
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DOI
高影响因子
Journal of Energy Chemistry
·
2019
·
IF 5.162
Lifang Teng,Junye Tong,Gang Wang,Lingling Wang,Liping Chen,Shaotong Wang,Yinglin Wang,Daocheng Pan,Xintong Zhang,Yichun Liu
Kesterite Cu 2 ZnSn(S,Se) 4 (CZTSSe) solar cells have drawn worldwide attention for their promising photovoltaics performance and earth-abundant element composition, yet the record efficiency of this type of device is still far lower than its theoretical conversion efficiency. Undesirable band alignment and severe non-radiative recombination at CZTSSe/CdS heterojunction interfaces are the major causes limiting the current/voltage output and overall device performance. Herein, we propose a novel two-step CdS deposition strategy to improve the quality of CZTSSe/CdS heterojunction interface and thereby improve the performance of CZTSSe solar cell. The two-step strategy includes firstly pre-deposits CdS thin layer on CZTSSe absorber layer by chemical bath deposition (CBD), followed with a mild heat treatment to facilitate element inter-diffusion, and secondly deposits an appropriate thickness of CdS layer by CBD to cover the whole surface of pre-deposited CdS and CZTSSe layers. The solar energy conversion efficiency of CZTSSe solar cells with two-step deposited CdS layer approaches to 8.76% (with an active area of about 0.19 cm 2 ), which shows an encouraging improvement of over 87.98% or 30.16% compared to the devices with traditional CBD-deposited CdS layer without and with the mild annealing process, respectively. The performance enhancement by the two-step CdS deposition is attributed to the formation of more favorable band alignment at CZTSSe/CdS interface as well as the effective decrease in interfacial recombination paths on the basis of material and device characterizations. The two-step CdS deposition strategy is simple but effective, and should have large room to improve the quality of CZTSSe/CdS heterojunction interface and further lift up the conversion efficiency of CZTSSe solar cells.
研究领域:
材料科学
·
能源技术
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DOI
高影响因子
Small
·
2024
·
IF 13
Beirong Ye,Yuefei Zhang,Chen Li,Tengfei Zhang,Yongqi Li,Ting Li,Fengyu Huang,Chong Tang,Renhong Chen,Tao Tang,Abolhassan Noori,Liujiang Zhou,Xinhui Xia,Mir F. Mousavi,Yongqi Zhang
NiFe-based nanomaterials are extensively studied as one of the promising candidates for the oxygen evolution reaction (OER). However, their practical application is still largely impeded by the unsatisfied activity and poor durability caused by the severe leaching of active species. Herein, a rapid and facile combustion method is developed to synthesize the vertical graphene (VG) supported N-doped carbon modified (Ni x Fe 1-x )Se composites (NC@(Ni x Fe 1-x )Se/VG). The interconnected heterostructure of obtained materials plays a vital role in boosting the catalytic performance, offering rich active sites and convenient pathways for rapid electron and ion transport. The incorporation of Se into NiFe facilitates the formation of active species via in situ surface reconstruction. According to density functional theory (DFT) calculations, the in situ formation of a Ni 0.75 Fe 0.25 Se/Ni 0.75 Fe 0.25 OOH layer significantly enhances the catalytic activity of NC@(Ni x Fe 1-x )Se/VG. Furthermore, the surface-adsorbed selenoxide species contribute to the stabilization of the catalytic active phase and increase the overall stability. The obtained NC@(Ni x Fe 1-x )Se/VG exhibits a low overpotential of 220 mV at 20 mA cm −2 and long-term stability over 300 h. This work offers a novel perspective on the design and fabrication of OER electrocatalysts with high activity and stability.
研究领域:
材料科学
·
电化学
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Wei Shen,Liang Qiao,Juan Ding,Yongming Sui
Promoting the intrinsic activity and accessibility of basal plane sites in transition metal dichalcogenides (TMDs) is an important way to optimize their catalytic performance for energy conversion and storage. Here, a simple liquid-phase phosphating selenization pyrolysis method is developed to prepare P and Se co-doped niobium disulfide (NbS 2 ) 3D nanosheets with active basal plane for efficient catalyzing hydrogen evolution reaction (HER). Experimental results indicate that the P and Se co-doped NbS 2 3D nanosheets exhibit significantly enhanced HER activity and stability compared to their undoped counterparts. It realizes 165 mV decreased overpotential at 10 mA cm −2 and a stable durability over 40 h continuous operation at 14 mA cm −2 without observable fading. Density functional theory (DFT) studies suggest that the P dopant is to activate the adjacent original inert Nb sites, where both S and Nb sites in P, Se co-doped NbS 2 monolayer can together act as the active sites for HER. Furthermore, the addition of selenium can stabilize the catalytic activity. Our work provides a promising approach and theoretical framework for improving the electrocatalytic HER performance of NbS 2 , and may have general guidelines for other transition metal disulfides.
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DOI
高影响因子
OPTICAL MATERIALS
·
2019
·
IF 2.687
Yanling Wang,Yachao Du,Lingli Meng,Yueshu Li,Zhi Li,Qingwen Tian
Kesterite Cu 2 ZnSn(S,Se) 4 (CZTSSe) has attracted much attention as an ideal absorber material for thin film solar cells. Solution deposition methods provide a crucial approach for lowering the fabricating price of CZTSSe based photovoltaic devices . Here, a low-cost and robust ethanol/thioglycolic acid/1-butylamine ternary solutions method was developed to fabricate the CZTSSe solar cells. Characterization was performed using XRD , Raman, and C–V, which showed that the material fabricated by this method expressed high-phase purity, suitable carrier concentration, and large depletion width, and those features are vital to high efficiency photovoltaic devices . Hence, based on this high quality CZTSSe absorbed layer, photovoltaic device with a power conversion efficiency (PCE) as high as 9.71% was achieved. The PCE can be further enhanced through passivating with alkali metal and optimizing the device fabrication conditions, making this method much promising for lowering the manufacturing cost of kesterite solar cells. Additionally, this approach is full of application prospect for other burgeoning photovoltaic absorber materials which could dramatically reduce the cost of solar electricity.
研究领域:
光伏技术
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材料科学
·
薄膜技术
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半导体材料
·
可再生能源
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DOI
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2023
·
IF 6.9
Haoyu Xu,Yuzhou Sun,Zhou Shen,Qing Zhou,Qingyun Zhu,Haifeng Gao,Chao Gao,Xiaoyun Teng,Yu Wei
In this paper, we prepared Na–K co-doped Cu 2 ZnSn(S,Se) 4 (CZTSSe) films by solution method. By optimizing the distribution of the K-doping (uniform or localized K-doping) in the precursor films, the efficiencies of CZTSSe solar cells were improved. The effect of the K-doping distribution on the properties of CZTSSe films and solar cells were investigated. Compared to the solar cells without K-doping, the uniform K-doping in the precursor film increased the solar cell efficiency from 10.4% to 11.7%. In comparison, the localized K-doping in the bottom and in the top of the precursor films yielded solar cells with efficiencies of 12.4% and 10.1%, respectively. It was determined that the K-doping distribution primarily had an influence on carrier recombination in the depletion regions of CZTSSe solar cells. Whereas k-doping at the top of the precursor film greatly enhances the carrier recombination in the depletion region, the bottom doping has the opposite effect. The reason could be that the variation of the K-doping distribution modified the crystallization of the CZTSSe films. As the result, the defect properties of the CZTSSe films were altered. Moreover, the effect of the bottom K-doping on the back contact properties of CZTSSe solar cells was investigated by impedance spectroscopy . Though the K-doping can reduce the back contact barrier of the solar cell, the back contact barrier still achieved the height of 228 meV. The results indicated that the back contact barrier would be an important limiting factor for the efficiency of CZTSSe solar cell.
研究领域:
材料科学
·
能源科学
✓ 已验证
DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2026
·Vol. 98
·期 30
·22473-22483
·
IF 7.3
Xia Jianing,Guo Jian,Gao Min,Mei Bingbao,Li Zhen,Dai Weilin,Zhao Hongbin,Yu Le,Ye Daixin
Intelligence and bionics are key directions for next-generation
sensors, yet achieving dynamic adaptability remains challenging. Inspired
by natural enzymes like chymotrypsin, this work synthesizes a N-doped
graphyne-based composite nanozyme (Se-2NGY) featuring selenium (Se)-single
atoms and cluster sites. Biologically active Se-single atoms act as
the primary catalytic center, while nearby clusters reduce the energy
and stabilize the configuration by inducing the formation of hydrogen
bonds with H 2 O molecules. This synergistic architecture
delivers excellent peroxidase (POD)-like activity. Density functional
theory calculations confirm the clusters’ role in modulating
the p -band center and reducing the energy barrier.
A key innovation is that the POD-like activity can be finely tuned
by UV-light exposure. In-situ characterizations reveal that photoexcitation
converts Se 0 to Se δ+ , generating more
hydroxyl radicals and enhancing catalytic performance. Leveraging
this unique photoresponsive activity, we develop a proof-of-concept,
intelligent colorimetric sensor for water quality monitoring, specifically
targeting thiosulfate detection. By simply adjusting light intensity,
the sensor’s detection range and sensitivity can be dynamically
and rapidly modulated─analogous to an artificial iris─enabling
flexible adaptation to environmental samples with vastly different
pollutant concentrations. This work provides a high-performance nanozyme
design strategy and pioneers a pathway toward light-controllable,
intelligent sensing systems for real-world environmental monitoring.
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产品关联
DOI
PubMed
高影响因子
ACS Applied Nano Materials
·
2026
·
IF 5.8
Denghui Tang,Wenchang Wang,Zhiyao Ming,Tian Fang,Qihu Wu,Minxian Wu,Pengju Wang,Shuiping Qin,Naotoshi Mitsuzaki,Zhidong Chen
This study successfully prepared Se–Sb–Ag optoelectronic alloy coatings by pulse electrodeposition in deep eutectic solvents (DESs). The electrochemical behavior of SeO2, SbCl3, and Ag2SO4, in a choline chloride-ethylene glycol DES, was systematically investigated using cyclic voltammetry (CV) and chronoamperometry (CA). CV and CA results revealed an induced codeposition mechanism. The nucleation mechanism of the Se–Sb–Ag alloy coatings between −0.30 V and −0.70 V was identified as a diffusion-controlled three-dimensional (3D) instantaneous process. The effects of pulse potential on surface morphology, composition, crystal structure, and photoelectrical properties of the coatings were systematically examined. The SEM results indicated distinct potential-dependent nanostructural evolution. A moderate negative shift produced smaller secondary nanoparticles and denser, more uniform coatings, whereas an excessive negative potential led to finer but loosely packed nanograins with increased porosity and reduced compactness. The EDS results demonstrated that Ag content initially decreased and then stabilized, Sb content first increased and then declined, while Se content showed an overall increasing trend. The crystalline phases were mainly Ag, Se, Sb, and Ag2Se phases. The coatings exhibited p-type semiconducting behavior. The band gap increased from 0.66 eV to a maximum of 0.76 eV as the electrodeposition potential shifted negatively, followed by a decrease to 0.72 eV at more negative potentials. A similar trend was observed in photocurrent density, which reached a maximum of 0.24 mA/cm2 at −0.80 V. By taking advantage of the strong complexation and solvation capabilities of DESs, this work demonstrates a pulse electrodeposition route suitable for reusing semiconductor elements such as Se and Ag. The electrodeposition mechanism of Se–Sb–Ag ternary coatings was clarified, and pulse deposition in DESs was shown to enable controlled tuning of their structural and photoelectrical properties. These findings indicate that DES-based electrodeposition holds promise for the green preparation of optoelectronic semiconductor materials.
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DOI
高影响因子
INTERNATIONAL JOURNAL OF PHARMACEUTICS
·
2024
·
IF 5.3
Liang Fang,Junying Li,Hongyan Cheng,Huanhuan Liu,Caiyun Zhang
Borneol is an aromatic traditional Chinese medicine that can improve the permeability of the blood–brain barrier (BBB), enter the brain, and promote the brain tissue distribution of many other drugs. In our previous study, borneol-metformin hydrochloride water/oil/water composite submicron emulsion (B-Met-W/O/W SE) was prepared using borneol and SE to promote BBB penetration, which significantly increased the brain distribution of Met. However, the dynamic images, transport pathway (uptake and efflux), promotion of BBB permeability, and mechanisms of B-Met-W/O/W SE before and after entering cells have not been clarified. In this study, rhodamine B and coumarin-6 were selected as water-soluble and oil-soluble fluorescent probes to prepare B-Met-W/O/W dual-fluorescent SE (B-Met-W/O/W DFSE) with concentric circle imaging. B-Met-W/O/W SE can be well taken up by brain microvascular endothelial cells (BMECs). The addition of three inhibitors (chlorpromazine hydrochloride, methyl-β-cyclodextrin, and amiloride hydrochloride) indicated that its main pathway may be clathrin-mediated and fossa protein-mediated endocytosis. Meanwhile, B-Met-W/O/W SE was obviously shown to inhibit the efflux of BMECs. Next, BMECs were cultured in the Transwell chamber to establish a BBB model, and Western blot was employed to detect the protein expressions of Occludin, Zona Occludens 1 (ZO-1), and p-glycoprotein (P-gp) after B-Met-W/O/W SE treatment. The results showed that B-Met-W/O/W SE significantly down-regulated the expression of Occludin, ZO-1, and P-gp, which increased the permeability of BBB, promoted drug entry into the brain through BBB, and inhibited BBB efflux. Furthermore, 11 differentially expressed genes (DEGs) and 7 related signaling pathways in BMECs treated with B-W/O/W SE were detected by transcriptome sequencing and verified by quantitative real-time polymerase chain reaction (qRT-PCR). These results provide a scientific experimental basis for the dynamic monitoring, transmembrane transport mode, and permeation-promoting mechanism of B-Met-W/O/W SE as a new brain-targeting drug delivery system.
研究领域:
药剂学
·
神经科学
·
药物递送系统
·
生物药剂学
·
分子生物学
✓ 已验证
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2020
·
IF 6.306
Yaoping Hu,Zhijin Gao,Junfei Luo
Facile detection of malachite green (MG), a toxic dye, in aquaculture is urgently demanded for environment and food safety. Herein, we design a novel fluorescent probe, namely red emissive Se,N,Cl-doped carbon dots (CDs), to accurately determinate MG. CDs are prepared by hydrothermal treatment of selenourea and o-phenylenediamine in HCl solution. This material exhibits excitation-independent dual emissions at 625 and 679 nm, with a high quantum yield of 23.6%. A selective and sensitive fluorescent sensor toward MG is established based on inner filter effect, because both the excitation and emission light of CDs can be strongly absorbed by MG. The fluorescence quenching of CDs is linear to the MG concentration over the range of 0.07–2.50 μM with a low detection limit of 21 nM. Trace-level analysis of MG in fish tissue is successfully explored, demonstrating the great potential of the proposed sensor for MG monitoring in aquatic products.
研究领域:
环境科学
·
食品安全
·
材料科学
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Fei Qi,Zequan Zeng,Hongbin Lu,Wenhao Si,Yanbiao Liu,Zhanggen Huang,Yuting Niu
Herein, seleniSum and nitrogen (Se/N) co-doped carbon catalysts were prepared to improve the catalytic performance and degradation selectivity of periodate based advanced oxidation processes (PI-AOPs) for pollutant abatement. The additional Se/N doping in carbon resulted in a 183 % increase in the degradation efficiency of bisphenol A (BPA) compared to the exclusively N-doped carbon catalyst. The coupling effect of the dual dopants significantly enhanced the electron transfer process. DFT calculations revealed that the co-doping of Se and N induced electron rearrangement in the carbon lattice while simultaneously enhancing the adsorption energy for PI. Moreover, the dual-doping strategy narrowed the energy gap between the LUMO of the [SeNC-PI] complex and the HOMO of BPA, thereby offering an excellent electronic channel for facilitating the electron transfer process. Driven by the potential difference, selective degradation of different pollutants was dependent on the half-wave potential of organic compounds. Benefiting from the non-radical oxidation pathway, the SeNC800/PI system showed great resistance to interference from pH, coexisting ions and dissolved organic matter. This work provides a strategy for improving the oxidation performance and pathway selectivity of pollutants in PI-AOPs.
研究领域:
环境科学
·
催化
·
材料化学
·
化学工程
·
物理化学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）