JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Jingjing Liu,Mengsha Cao,Zhengdong Feng,Xiaomeng Ni,Jing Zhang,Jianhua Qiu,Shuai Zhang,Huafei Guo,Ningyi Yuan,Jianning Ding
Chemical bath–deposited cadmium sulfide (CBD-CdS) is the most widely used buffer layer material for antimony selenosulfide (Sb 2 (S,Se) 3 ) photovoltaic devices , but its medium band gap, large band gap offset with transparent conducting oxides , and surface defects must be addressed to improve its applicability. Hexagonal CdS films (60 nm thick) prepared using the thermal evaporation method were used as the buffer layers of Sb 2 (S,Se) 3 photovoltaic devices. Compared with CBD-CdS (60 nm thick), thermal evaporation–deposited CdS (TED-CdS) films have a larger band gap and fewer surface defects. The Sb 2 (S,Se) 3 film deposited on TED-CdS is more compact, and its 1D ribbons are stacked more vertically to the substrate. The band gap offset between CdS and fluorine-doped tin oxide glass decreases from 0.76 eV (CBD-CdS) to 0.60 eV (TED-CdS). Therefore, suppressed electron trap density and charge recombination, as well as improved light harvesting, are achieved. By replacing CBD-CdS with TED-CdS, the best device efficiency increases from 6.14 % to 7.16 %, with the open circuit voltage, short-circuit current density, and fill factor increasing from 0.660 V, 15.96 mA/cm 2 , and 58.37 % to 0.664 V, 17.39 mA/cm 2 , and 62.85 %, respectively. The device stability and reproducibility are also improved.
研究领域:
材料科学
·
光伏技术
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DOI
高影响因子
Advanced Composites and Hybrid Materials
·
2023
·Vol. 6
·期 6
·1-15
·
IF 20.1
Xiang Lele,Darboe Abdou Karim,Luo Zhihong,Qi Xiaosi,Shao Jiao-jing,Ye Xiao-Juan,Liu Chun-Sheng,Sun Kai,Qu Yunpeng,Xu Jing,Zhong Wei
Interface engineering and/or impedance matching characteristic played a very important role in microwave absorption. To simultaneously make best of these aspects, herein, two-dimensional (2D)/2D reduced graphene oxide (RGO)/MoSe 2 van der Waals heterojunctions (VDWHs) were elaborately designed and successfully produced in large scale and high efficiency through a simple solvothermal method. By increasing the amount of graphene oxide (GO) from 15 to 45 mg, the designed 2D/2D RGO/MoSe 2 VDWHs with enhanced RGO contents and interfaces could be synthesized, which resulted in their progressively boosted comprehensive microwave absorption properties (MAPs). Furthermore, the proposed route could also be expanded to fabricate 2D/2D RGO/MoS 2 VDWHs. The obtained results demonstrated that the enhanced amount of GO effectively improved their impedance matching characteristics, conductivity loss, and polarization loss capabilities of 2D/2D RGO/MoX 2 (X = Se and S) VDWHs, which contributed to their enhanced comprehensive MAPs. In particular, the RGO/MoSe 2 VDWHs displayed a minimum reflection loss of − 65.34 dB at 6.40 GHz and an effective absorption bandwidth of 4.20 GHz. Therefore, the findings not only presented a combined composition modulation and interface engineering strategy to simultaneously take full advantage of impedance matching characteristics and interfaces for improving the comprehensive MAPs but also provided a simple and propagable route to design and synthesize 2D/2D RGO/MoX 2 (X = Se and S) VDWHs, which could be acted as the good candidates for lightweight high-efficiency microwave absorbers.
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产品关联
DOI
高影响因子
JOM
·
2022
·Vol. 75
·期 5
·1515-1529
·
IF 2.597
Ge Yang,Liu Zhihong,Yu Zhiqian,Wang Huanwen,Lu Xingwu,Zhang Leru,Xia Longgong
The present study focused on the Cu-Pb system and investigating the distribution behaviors of various minor elements through the equilibration-quenching-EPMA analysis experimental technique. Obtained results showed that: (1) An intermetallic compound consisting mainly of Cu-Pb-Se-Te formed below 956°C. (2) As, Sb and Sn had similar distribution behaviors, which mainly entered the solid Cu phase at the temperature range of 500–900°C, but became concentrated in the liquid alloy phase at temperature range of 900–1060°C, and their distribution ratios increased along with increasing temperature. (3) Bi was mainly found in the liquid alloy phase, and its distribution ratio ranged from 6.8 to 836.5 at the experimental conditions. (4) Se and Te formed an intermetallic alloy phase under 900°C, and they enriched in the liquid alloy phase between 960°C and 1060°C. (5) Au was mainly found in the solid Cu phase at the temperature range of 500–900°C, and its distribution ratio was about 1.5 at 900–1060°C. The distribution ratio of Ag decreased from 8.7 to 2.3 when increasing the temperature from 500°C to 1060°C. Distribution behavior of As, Sb, Bi and Sn is consistent with their interfacial enthalpies with Cu and Pb.
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产品关联
DOI
高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
·
2021
·Vol. 35
·期 8
·e6269
·
IF 4.105
Xiaoying Wang,Biao Li,Jingjing Fan,Shanshan Tian,Xiangyang Wei
Polymer functionalized nanoparticles (NPs) have a great attention in biomedical applications owing to their unique properties like regenerative antioxidant, anti-inflammatory, auto-catalytic properties, and biocompatibility. In this current work, we demonstrated a facile synthesis of Se-CeO 2 via chemical method followed by precipitation method. The prepared Se NPs were characterized by ultraviolet–visible (UV-vis) spectroscopy, and the size and morphology of the NPs were analysed using transmission electron microscopy (TEM). Meanwhile, Se-CeO 2 NPs loaded on polylactic-co-glycolic acid (PLGA) nanocarrier were characterised by Fourier transform infrared (FT-IR), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), TEM, and energy dispersive X-ray analysis (EDAX) mapping techniques. The morphological and spectroscopic investigations of prepared nanomaterials have exhibited favourable morphological structure and chemical interactions with respective polymeric molecules, which established that nanovesicle suitability for the SCI functional recovery. We first investigated Se nanoformulated CeO 2 material for the potential healing of in vitro spinal cord study. Our results demonstrated that preparation of NPs loaded PLGA nanocarrier has provide effective spinal cord regeneration and imply that it was explored that promising nanocarrier in the SCI treatment. Se-NPs encapsulated CeO 2 nanostructures administrations for SCI therapies have greatly suppressed oxidative stress and induced anti-inflammatory action, which leads to prospective therapeutic benefits of spinal cord regeneration. These investigative results demonstrate that Se-CeO 2 NPs with PLGA carrier could have great attention for effecient functional recovery treatment and care for spinal cord injury.
研究领域:
生物医学工程
·
纳米医学
·
再生医学
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DOI
高影响因子
Small
·
2021
·Vol. 17
·期 46
·2101887
·
IF 13.281
Jian Feng,Shao-hua Luo,Sheng-xue Yan,Yang Zhan,Qing Wang,Ya-hui Zhang,Xin Liu,Long-jiao Chang
Transition-metal selenides (TMSs) have emerged as prospective anode materials for sodium ion batteries (SIBs), owing to their considerable theoretical capacity and intrinsic high electronic conductivity. Whereas, TMSs still suffer from poor rate capability and inferior cycling stability induced by sluggish kinetics and severe volume changes during de/sodiation processes. Herein, a hierarchical composite consisting of a zinc-cobalt bimetallic selenide yolk and nitrogen-doped double carbon shell (denoted as Zn Co Se@NDC) is engineered and fabricated successfully. The architecture of the as-fabricated material improves the Na-ion storage performance via increasing the electron transfer kinetics, accommodating volume expansion, and mitigating the generation of by-products. As expected, the Zn Co Se@NDC electrode delivers superior sodium storage performance with long cycling stability (344.5 mAh g −1 at 5.0 A g −1 over 2000 long-term cycles) and high-rate performance (319.2 mAh g −1 at 10.0 A g −1 ). Meanwhile, the NVP@C//Zn Co Se@NDC full SIB cells are constructed successfully, retaining 96.3% of its initial capacity at 0.5A g −1 after 200 loops. The outstanding electrochemical performance and the construction of hybrid SIBs will have far-reaching influences on the development of the various rechargeable batteries.
研究领域:
材料科学
·
能源存储
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DOI
PubMed
高影响因子
Nano Energy
·
2019
·
IF 15.548
Fu-Ting Wang,Yi-Han Wang,Jing Xu,Ke-Jing Huang,Zhen-hua Liu,Yun-fei Lu,Shu-yu Wang,Zi-wei Han
A self-powered microRNA (miRNA) biosensing device is fabricated with high-energy enzymatic biofuel cell (EBFC) and cruciform DNA (cDNA). Sulfur-selenium co-doped graphene/gold nanoparticles (S–Se-GR/AuNPs) is synthesized and used as supporting substrate of biocathode and bioanode . The glucose oxidase (GOD) molecules are bonded to carboxyl-functionalized AuNPs through the condensation reaction between the amino groups in enzyme and carboxyl groups on the AuNPs to form the bioanode. The ultra-thin porous carbon shell/AuNPs-complementary strand of cDNA (UPCS/AuNPs-cDNA) is meticulously designed. The potassium ferricyanides are then inserted in mesoporous UPCS/AuNPs as the biocathode electron acceptor , and the cruciform DNA bioconjugate is synthesized as signal amplifier. When target miRNA is added, the hybridization reaction happens between miRNA and capture probe DNA on the biocathode to open the capture probe DNA chain. Cruciform DNA bioconjugate is immobilized onto the biocathode through base pairing with the capture DNA on the biocathode, which can release electron acceptor [Fe(CN) 6 ] 3- , resulting in the dramatically increase of the open circuit voltage of the EBFCs. The self-powered biosensor responds linearly in the miRNA level range of 0.5–10000 fM with a detection limit of 1.5 × 10 −16 mol L −1 . Detection of miRNA in spiked serum samples is also realized with the self-powered biosensor, demonstrating its great potential in the clinical applications.
研究领域:
生物工程
·
生物医学工程
·
分析化学
·
分子生物学
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DOI
高影响因子
危险品化学品经营许可证（带存储）