JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2024
·Vol. 35
·期 17
·1-15
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IF 2.8
Min Zhijian,Hu Yuehui,Chen Yichuan,Wu Weimin,Hu Yefu,Liu Huiwen
There are still some problems on the traditional spin-coating preparation of silver nanowire transparent conductive films (AgNWs-TCFs), such as high junction resistance and uneven resistance distribution, due to the random distribution of the AgNWs in network. In this paper, a shear coating method was employed to prepare the aligned AgNWs-TCFs, which is used to reduce the junction resistance. The results revealed a significant anisotropic distribution of resistance, with a maximum transverse-to-longitudinal resistance ratio ( R y / R x ) of 4.31 at a solution temperature of 40 °C. Annealing treatments with twice could effectively eliminate the chemical residue PVP from the samples and resulted in optimal electrical performance, as well as possessed remarkable anisotropic resistance distribution for the aligned AgNWs-TCFs. However, the resistivity anisotropy of the aligned AgNWs-TCFs deteriorated after undergoing more than three annealing treatments. Additionally, this work indicated that the sheet resistivity significantly decreased in the aligned AgNWs-TCFs modified by SnO 2 nanoparticles produced through magnetron sputtering. The resistance’s directivity of aligned AgNWs-TCFs has important potential application in crystal directional growth with electric-field induction.
研究领域:
材料科学
·
纳米技术
✓ 已验证
DOI
高影响因子
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
·
2023
·
IF 3.3
Lanpeng Guo,Hongping Liang,Dongmin An,Huimin Yang
Noble metal doping is considered to be an efficient way to promote the gas sensing performances of metal oxide semiconductor nanomaterials . In this study, uniform silver (Ag)-doped tin dioxide (SnO 2 ) nanoparticles were successfully synthesized through a facile one-step hydrothermal route. The diameter of Ag/SnO 2 nanoparticles is less than 10 nm. Compared with pure SnO 2 -based sensor, the Ag/SnO 2 -based sensors are found to effectively improve their sensitivity and selectivity to ethanol. In particular, the 6% Ag/SnO 2 -based sensor displays a high response (Ra/Rg = 135) to 50 ppm ethanol at 180 °C. The enhancement of ethanol sensing properties of the 6% Ag/SnO 2 sample due to the small size of SnO 2 and catalytic sensitization effect of Ag, as well as the Schottky barrier forms between SnO 2 and Ag. These results suggest that the Ag-doped SnO 2 nanoparticles acting as a promising functional composite material have potential application for ethanol sensors.
研究领域:
材料科学
·
化学
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
OPTICS LETTERS
·
2024
·Vol. 49
·期 8
·1896-1899
·
IF 3.1
Jinxing Zhao,Zhongwei Man,Zhongwei Man,Shuaibing Wang,Chaoqi Hao,Zhenzhen Yu,Xu Li,Xu Li,Aiwei Tang
Next-generation display and lighting based on quantum dot light-emitting diodes (QLEDs) require a balanced electron injection of electron transport layers (ETLs). However, classical ZnO nanoparticles (NPs) as ETLs face inherent defects such as excessive electron injection and positive aging effects, urgently requiring the development of new types of ETL materials. Here, we show that high stability SnO2 NPs as ETL can significantly improve the QLED performance to 100567 cd·m−2 luminance, 14.3% maximum external quantum efficiency, and 13.1 cd·A−1 maximum current efficiency using traditional device structures after optimizing the film thickness and annealing the temperature. Furthermore, experimental tests reveal that by doping Zr4+ ions, the size of SnO2 NPs will reduce, dispersion will improve, and energy level will shift up. As expected, when using Zr-SnO2 NPs as the ETL, the maximum external quantum efficiency can reach 16.6%, which is close to the state-of-the-art QLEDs based on ZnO ETL. This work opens the door for developing novel, to the best of our knowledge, type ETLs for QLEDs.
研究领域:
材料科学
·
光电显示技术
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Chen Zhao,Zengyan Wei,Jie Zhang,Peigang He,Xiaoxiao Huang,Xiaoming Duan,Dechang Jia,Yu Zhou
Commercial graphite anodes show limited capacity in lithium-ion batteries, which inhibits the development of high-energy and high-power devices. Although the theoretical capacity of SnO 2 based anodes is three times higher than that of graphite, their practical application is hindered by the poor cycling stability. In this study, we report a ball-milling assisted exfoliation method for the scalable production of delaminated MXene nanosheets , followed by the preparation of 5 nm SnO 2 nanocrystals anchored on MXene nanosheets through a hydrothermal reaction . SnO 2 /MXenes nanocomposites exhibit long cycling life up to 1000 cycles with a high capacity of 904 mA h g −1 , which can be ascribed to the high conductivity of the MXene substrates, and the anchoring effect between SnO 2 nanoparticles and MXene sheets that can prevent crystal aggregation or collapse during cycling.
研究领域:
材料科学
·
能源存储
·
纳米技术
✓ 已验证
DOI
高影响因子
ACS Applied Nano Materials
·
2024
·
IF 5.3
Li Luo,Zhen Fan,Zhaobin Zhang,Danyang Liu,Guofa Li,Lishuang Wang,Bingsuo Zou
SnO2 nanoparticles (NPs) have been used as an electron transport layer (ETL) in quantum dot light-emitting diodes (QLEDs) to achieve stable and high-performance devices. However, SnO2 NPs with high electron mobility cause the problem of imbalanced charge injection and transport in QLEDs. Meanwhile, the SnO2 NPs synthesized at low temperature have hydroxyl (−OH) groups, which could damage the performance of QLEDs. Here, Zn doping was applied to modulate the properties of SnO2 NPs and achieve better carrier balance in green CdSe/ZnS QLED. The maximum current efficiency (CE) of QLED with 5 wt % Zn-doped SnO2 NPs is 2.3-fold higher than that of SnO2-based QLED. In addition, a small-molecule 4,4′-bis(carbazole-9-yl)-1,1′-biphenyl (CBP)-mixed poly(9-vinylcarbazole) (PVK) layer was used as a hole transport layer to facilitate the hole injection and charge balance. As a result, a maximum external quantum efficiency (EQE) of 5.03% is obtained for the best performance device. The T50 lifetime at a luminance of 100 cd/m2, for a device based on 5 wt % Zn-doped SnO2 ETL, is 9141 h, which is 2.29-fold longer than the reference one. This work provides a new strategy to obtain high-performance and stable display arrays.
研究领域:
材料科学
·
光电子学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Advanced Energy Materials
·
2025
·
IF 26
Chunjie Huang,Zhenghao Liu,Shiyu Jiang,Xiangjin Du,Chengyu Tan,Xinru Qin,Yuqi Cui,Rui Zhang,Yiming Li,Fubo Tian,Jiangjian Shi,Huijue Wu,Yanhong Luo,Dongmei Li,Qingbo Meng
Large area, dense, and uniform SnO 2 films with fewer defects are essential for high-quality perovskite films and efficient n-i-p typed perovskite modules. In this respect, based on the self-synthesized SnO 2 nanoparticles (NPs) 4,4′-bipyridine is introduced as a multifunctional interface modifier at the SnO 2 /perovskite interface. Both experimental and DFT calculation results reveal that, the incorporation of 4,4′-bipyridine can simultaneously passivate interfacial defects from the SnO 2 surface and perovskite bottom surface. Moreover, it can also facilitate charge carrier transportation. Based on blade-coating technique for large area perovskite modules, this strategy significantly enhances the interfacial quality of large-area SnO 2 films and crystal quality of large-area perovskite layers. As a result, the champion small-area cell (0.076 cm 2 ) presents the efficiency of 25.75% while the minimodule (22.9 cm 2 aperture area) exhibits the efficiency of 23.50% with a certified efficiency of 22.70%. Both small-area devices and modules exhibited excellent operation and thermal stabilities, demonstrating that this interface treatment is a promising approach for large-scale production of high-efficiency perovskite modules.
研究领域:
材料科学
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纳米技术
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光伏技术
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薄膜技术
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表面工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2014
·Vol. 2
·期 43
·18367-18374
·
IF 0
Xiulin Fan,Jie Shao,Xuezhang Xiao,Xinhua Wang,Shouquan Li,Hongwei Ge,Lixin Chen,Chunsheng Wang
SnO2 has high capacity but poor cycling stability for Li-ion batteries due to pulverization and aggregation. Herein, we tackle these two challenges by uniformly dispersing carbon coated nanoSnO2 into a micro-sized porous carbon matrix to form a nano-SnO2/C composite anode using a facile and scalable in situ synthesis strategy. The SnO2@C nanocomposite exhibits a capacity of 640 mA h g−1 at 500 mA g−1 in the initial 150 cycles and then increases to 720 mA h g−1 and maintains this capacity for 420 cycles. The superior electrochemical performance with long cycle lifetimes of the carbon foam–SnO2 nanocomposites could be attributed to their unique carbon microstructures: the network of carbon sheets provides favorable electron transport, while the interconnected micro-/mesopores can serve as the effective channels of lithium ion transport, thereby supplying short lithium ion diffusion pathways. Meanwhile, these pores surrounding the active species of nanoSnO2 along with flexible carbon nanosheets can accommodate the severe volume variations during prolonged electrochemical cycling and mitigate the Sn aggregation. The present study provides a large-scale synthesis route to synthesize SnO2-based anode materials with superior electrochemical performance for lithium ion batteries.
研究领域:
材料科学
·
电化学
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能源存储
✓ 已验证
产品关联
DOI
ELECTROANALYSIS
·
2017
·Vol. 29
·期 9
·2044-2052
·
IF 2.851
Yongqin Liu,Lu Wang,Lingxi Yang,Yi Zhan,Lina Zou,Baoxian Ye
This paper demonstrated using polyethylenimine (PEI)-functionalized graphene (Gr) incorporating tin oxide (SnO 2 ) hybrid nanocomposite as a platform for nonenzymatic H 2 O 2 electrochemical sensor. The results of UV-vis spectroscopy and X-ray diffraction (XRD) confirmed the simultaneous formation of tin oxide (SnO 2 ) nanocomposite and reduction of graphene oxide (GO). Transmission electron microscopy (TEM) images showed a uniform distribution of nanometer-sized tin oxide nanoparticles on the grapheme sheets, which could be achieved using stannous chloride (SnCl 2 ) complex instead of tin oxide as precursor. The electrochemical measurements, including cyclic voltammetry (CV) and amperometric performance (I-t), showed that the PEI-functionalized Gr supported SnO 2 (SnO 2 -PEI-Gr) exhibited an excellent electrocatalytic activity toward the H 2 O 2 . The corresponding calibration curve of the current response showed a linear detection range of 9×10 −6 ∼1.64×10 −3 mol L −1 , while the limit of detection was estimated to be 1×10 −6 mol L −1 . Electrochemical studies indicated that SnO 2 and functionalized Gr worked synergistically for the detection of H 2 O 2 .
研究领域:
电化学
·
纳米材料
·
传感器
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2022
·Vol. 51
·期 12
·6637-6644
·
IF 2.047
Liu Ying,Chen Ling,Jiang Hao,Li Chunzhong
The use of tin oxide (SnO 2 ) with high theoretical capacity in practical application as the anode material of lithium-ion batteries (LIBs) has been limited due to its large volume expansion and fast capacity decay. To address this problem, we proposed the synthesis of encapsulating SnO 2 nanoparticles in the channels of nitrogen-doped carbon nanotubes (SnO 2 -in-NCNTs) by capillary force. The confined spaces of NCNTs not only restrict the particle size of SnO 2 , but also effectively buffer the volume change during lithiation/delithiation processes. In addition, the conductive NCNTs also ensure the effective contact of the electrolyte to the electrode surface, facilitating both ion and electron transfer. When applied to LIBs, the SnO 2 -in-NCNTs possess high reversible capacities of 961.8 mAh g −1 at 0.1 A g −1 and 326.3 mAh g −1 at 10 A g −1 . Moreover, they exhibited superior cyclic stability with a capacity retention of 96% at 5 A g −1 after 500 cycles. This work provides a simple and effective strategy for performance improvement of SnO 2 -based anode materials.
研究领域:
材料科学
·
电化学
·
纳米技术
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）