APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
·
2019
·Vol. 125
·期 3
·158
·
IF 1.784
Gao Dong-Sheng,Gao Xiang-Dong,Wu Yong-Qing,Zhang Tong-Tong,Yang Jing-Nan,Li Xiao-Min
Co doped BaSnO 3 films [BaSn 1 − x Co x O 3 (0 ≤ x ≤ 0.50), i.e., BSCO] have been grown on MgO single-crystal substrates via pulsed laser deposition. Effects of the Co-doping level on the crystallinity, the microstructure, and optical properties of the BSCO films are investigated. All the BSCO films are of high crystallinity and grown epitaxially on MgO substrates. The lattice parameter of the (200) plane drops linearly with the increase of the ‘ x ’ value. The Co doping is found to increase the film roughness and the grain size, and a RMS roughness of 8.33 nm and grain size up to 100 nm are observed in the film with x = 0.50. The low Co-doping level ( x = 0.05, 0.1) has slight anti-reflection effects on the incident visible light, and the Co-doping level higher than 0.2 reduces the optical transmittance significantly. The optical bandgap shows a first-rising then falling trend with the increase of the Co content, and the lowest bandgap of 1.94 eV is realized in the BSCO film with x = 0.50.
研究领域:
材料科学
·
凝聚态物理
·
薄膜制备
·
光学材料
·
功能氧化物
✓ 已验证
DOI
高影响因子
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
·
2012
·Vol. 50
·期 24
·4995-4999
·
IF 3.919
Zhihai Hao,Hou Chen,Delong Liu,Lijun Fan
Sn(0)-mediated single electron transfer-living radical polymerization (SET-LRP) of acrylonitrile (AN) with carbon tetrachloride (CCl 4 ) as initiator and hexamethylenetetramine (HMTA) as ligand in N, N -dimethylformamide (DMF) was studied. The polymerization obeyed first order kinetic. The molecular weight of polyacrylonitrile (PAN) increased linearly with monomer conversion and PAN exhibited narrow molecular weight distributions. Increasing the content of Sn(0) resulted in an increase in the molecular weight and the molecular weight distribution. Effects of ligand and initiator were also investigated. The block copolymer PAN- b -polymethyl methacrylate with molecular weight at 126,130 and polydispersity at 1.36 was successfully obtained. © 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2012
研究领域:
高分子化学
·
聚合反应
·
功能高分子
·
材料化学
·
有机合成
✓ 已验证
DOI
高影响因子
Advanced Electronic Materials
·
2021
·Vol. 7
·期 11
·2100706
·
IF 7.295
Hui Liu,Chaolei Zuo,Ziliang Li,Xinya Liu,Xiaosheng Fang
The rapid development of artificial intelligent and internet of things calls for high-performance multifunctional devices for synchronous detection of a wide variety of environmental signals, such as gas, light, and humidity. Herein, highly crystallized tin dioxide (SnO 2 ) microwires (MWs) with low density of point defects are synthesized by the chemical vapor deposition method and constructed into a multifunctional device for photo and humidity sensing. The device shows excellent photoelectric performances, for example, ultralow dark current of ≈10 −13 A, ultrahigh on–off ratio of >10 7 , UV/visible rejection ratio of R 300 nm / R 400 nm > 10 7 , specific detectivity ( D *) of 1.16 × 10 15 Jones, linear dynamic range (LDR) of 152 dB, high responsivity of 18 A W −1 , and fast photoresponse speed of t rise / t decay = 2.7 µs/2.5 ms at 5 V bias. Furthermore, the p-CuI/n-SnO 2 heterojunction shows outstanding self-powered properties, such as responsivity of 8.98 mA W −1 , specific detectivity of 1.98 × 10 12 Jones and LDR of 106 dB at 0 V bias. Additionally, the SnO 2 MWs also show high sensitivity to ambient humidity changes. Therefore, the SnO 2 MWs show high potential for multifunctional applications, such as UV photodetector and humidity sensor.
研究领域:
材料科学
·
纳米科技
·
传感器技术
·
半导体物理
·
环境监测
✓ 已验证
DOI
高影响因子
IEEE TRANSACTIONS ON ELECTRON DEVICES
·
2023
·Vol. 70
·期 8
·4251-4256
·
IF 3.1
Biao He,Yongkai Jing,Xinfa Zhu,Chao Fan,Chun Sun,Yonghui Zhang,Mengjun Wang,Hongxing Zheng,Erping Li
In this work, light detectors utilizing p-type tin monosulfide (p-SnS) few layers with an Au/SnS/Ag Schottky structure are demonstrated. These detectors exhibit broad-spectrum light detection capabilities spanning the visible to near-infrared (NIR) wavelength range. Notably, under NIR 850 nm illumination, the detectors exhibit exceptional photodetection performance with an ultrahigh responsivity of up to 1652.87 $\text{A}\cdot \text{W}^{-{1}}$ , an extremely specific detectivity of $8.05\times 10^{{12}}$ cm $\cdot $ Hz $^{\text {1/{2}}}\cdot \text{W}^{-{1}}$ , and a rapid response time of approximately 6.5 ms. These characteristics surpass those of most 2-D materials-based detectors and even outperform commercial InGaAs (Hamamatsu, InGaAs G8370-85) and Silicon (Hamamatsu, Si S9119-01) detectors. The remarkable photoresponse is attributed to the SnS/Ag Schottky structure, which facilitates the separation of excited electron–hole pairs. Our findings suggest a promising route for developing high-performance optoelectronics based on p-SnS.
研究领域:
光电子学
·
半导体物理
·
纳米材料科学
·
器件物理
·
光学工程
✓ 已验证
DOI
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Kehan Wang,Zhanglian Hong,Xiuquan Gu,Mingjia Zhi
The design of high-entropy O3-type layered oxides has been considered as an effective method for suppressing multiple phase transitions during cycling and improving stability. Herein, a series of high entropy layered oxides (HEOs) with different Mg:Sn ratios are investigated. It is found that the structural stability and electrochemical performance of these HEOs can be optimized by varying the Mg to Sn ratio. A lower Mg content is conducive to the formation of a single-phase HEO. An optimized HEO composition (namely NaNi 0.1 Co 0.2 Mn 0.2 Fe 0.2 Cu 0.1 Mg 0.04 Sn 0.16 O 2 ) exhibits high specific capacity (137.3 mAh g −1 at 0.1C) and good rate capability (~100 mAh g −1 at 1C). The cycling performance (capacity retention of ~87 % after 200 cycles at 0.5C) is also comparable to the reported O3-type HEOs. Such good performance can be attributed to its good redox activity, low interfacial impedance, higher Na + diffusion coefficient (2.26 × 10 −11 cm 2 s −1 ) and reversible O3-P3 phase transition.
研究领域:
材料科学
·
电化学
·
能源存储
·
无机化学
·
固态化学
✓ 已验证
DOI
高影响因子
Small
·
2019
·Vol. 15
·期 46
·1903873
·
IF 10.856
Ya-Qian Wu,Hui-Xian Yang,Yu Yang,Hao Pu,Wen-Jie Meng,Rui-Ze Gao,Dong-Lin Zhao
SnS 2 has been widely studied as an anode material for sodium-ion batteries (SIBs) based on the high theoretical capacity and layered structure. Unfortunately, rapid capacity decay associated with volume variation during cycling limits practical application. Herein, SnS 2 /Co 3 S 4 hollow nanocubes anchored on S-doped graphene are synthesized for the first time via coprecipitation and hydrothermal methods. When applied as the anode for SIBs, the sample delivers a distinguished charge specific capacity of 1141.8 mAh g −1 and there is no significant capacity decay (0.1 A g −1 for 50 cycles). When the rate is increased to 0.5 A g −1 , it presents 845.7 mAh g −1 after cycling 100 times. Furthermore, the composite also exhibits an ultrafast sodium storage capability where 392.9 mAh g −1 can be obtained at 10 A g −1 and the charging time is less than 3 min. The outstanding electrochemical properties can be ascribed to the enhancement of conductivity for the addition of S-doped graphene and the existence of p–n junctions in the SnS 2 /Co 3 S 4 heterostructure. Moreover, the presence of mesopores between nanosheets can alleviate volume expansion during cycling as well as being beneficial for the migration of Na + .
研究领域:
材料科学
·
电化学
·
纳米科技
·
能源存储
·
无机化学
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2017
·
IF 6.395
Zhiliang Chen,Guang Yang,Xiaolu Zheng,Hongwei Lei,Cong Chen,Junjie Ma,Hao Wang,Guojia Fang
Perovskite solar cells have developed rapidly in recent years as the third generation solar cells. In spite of the great improvement achieved, there still exist some issues such as undesired hysteresis and indispensable high temperature process. In this work, bulk heterojunction perovskite-phenyl-C 61 -butyric acid methyl ester solar cells have been prepared to diminish hysteresis using a facile two step spin-coating method. Furthermore, high quality tin oxide films are fabricated using pulse laser deposition technique at room temperature without any annealing procedure. The as fabricated tin oxide film is successfully applied in bulk heterojunction perovskite solar cells as a hole blocking layer. Bulk heterojunction devices based on room temperature tin oxide exhibit almost hysteresis-free characteristics with power conversion efficiency of 17.29% and 14.0% on rigid and flexible substrates , respectively.
研究领域:
材料科学
·
光伏技术
·
纳米材料
·
能源材料
·
半导体器件
·
薄膜制备
✓ 已验证
DOI
高影响因子
Small
·
2020
·Vol. 16
·期 38
·2003557
·
IF 11.459
Zheng Liu,Su Zhang,Zhipeng Qiu,Chao Huangfu,Lin Wang,Tong Wei,Zhuangjun Fan
Tin (Sn) is considered to be an ideal candidate for the anode of sodium ion batteries. However, the design of Sn-based electrodes with maintained long-term stability still remains challenging due to their huge volume expansion (≈420%) and easy pulverization during cycling. Herein, a facile and versatile strategy for the synthesis of nitrogen-doped graphene quantum dot (GQD) edge-anchored Sn nanodots as the pillars into reduced graphene oxide blocks (NGQD/Sn-NG) for ultrafast and ultrastable sodium-ion storage is reported. Sn nanodots (2–5 nm) anchored at the edges of “octopus-like” GQDs via covalent Sn O C/Sn N C bonds function as the pillars that ensure fast Na-ion/electron transport across the graphene blocks. Moreover, the chemical and spatial (layered structure) confinements not only suppress Sn aggregation, but also function as physical barriers for buffering volume change upon sodiation/desodiation. Consequently, the NGQD/Sn-NG with high structural stability exhibits excellent rate performance (555 mAh g −1 at 0.1 A g −1 and 198 mAh g −1 at 10 A g −1 ) and ultra-long cycling stability (184 mAh g −1 remaining even after 2000 cycles at 5 A g −1 ). The confinement-induced synthesis together with remarkable electrochemical performances should shed light on the practical application of highly attractive tin-based anodes for next generation rechargeable sodium batteries.
研究领域:
材料科学
·
电化学
·
纳米能源
·
储能材料
·
先进电池技术
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2017
·
IF 4.233
Qing Qing Xia,Lian Ying Zhang,Zhi Liang Zhao,Chang Ming Li
Uniform Pt 1 Ru 0.5 Sn 0.5 ternary alloy nanoparticles are in situ deposited on reduced graphene oxide (Pt 1 Ru 0.5 Sn 0.5 -RGO) through its functional groups and defects as nucleation sites to greatly electrocatalyze ethanol oxidation reaction for much higher mass current densities, larger apparent specific current densities and better stability than commercial Pt-C catalyst (Pt-C(commer)). Mechanistic studies indicate that the excellent electrocatalytic activity and anti-poisoning are resulted from a strong ligand effect of the ternary alloy components, in which the charge transfer is boosted while decreasing the density of states close to the Fermi level of Pt to reduce bond energy between Pt and CO-like adsorbates for greatly improved anti-poisoning ability. This work holds a great promise to fabricate a high performance anode catalyst with a low Pt loading for direct ethanol fuel cells.
研究领域:
材料科学
·
电化学
·
能源科学
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2021
·
IF 6.901
Shuai Fan,Zihao Fan,Huiyuan Cheng,Manman Feng,Xuemei Wu,Dongwei Pan,Fujun Cui,Gaohong He
A 3D integrated hierarchical porous N-doped Sn/CNT@N C gas diffusion electrode is proposed via phase inversion to synergistically improve electron-proton-gas transfer and efficiency of CO 2 reduction reaction (CO2RR). Hierarchical porous structure is tuned by the carbon nanotube additive during phase inversion, which integrates microporous layer and diffusion layer to decrease mass transfer resistance comparing with the 2D layer structure of commercial carbon paper . XPS results show that Sn/CNT@N C 800 contains pyridinic nitrogen and pyrrolic nitrogen with catalytic activity. EIS and LSV curves show that Sn/CNT@N C 800 is beneficial to reduce mass transfer resistance and increase current density after twice hydrophobic treatments. As a result, Sn/CNT@N C 800 shows higher CO 2 RR electrocatalytic activity. The reaction rate and Faraday efficiency of CO at 12 mA cm −2 increase by 40.2% and 40.6%, respectively compared with Sn/carbon paper. The reaction rate and Faraday efficiency of formate are also slightly higher than those of Sn/carbon paper.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
NANOTECHNOLOGY
·
2021
·Vol. 33
·期 2
·025201
·
IF 3.874
Risheng Jin,Keli Shi,Beibei Qiu,Shihua Huang
Recently, antimony-doped tin oxide nanoparticles (ATO NPs) have been widely used in the fields of electronics, photonics, photovoltaics, sensing, and other fields because of their good conductivity, easy synthesis, excellent chemical stability, high mechanical strength, good dispersion and low cost. Herein, for the first time, a novel nonvolatile transistor memory device is fabricated using ATO NPs as charge trapping sites to enhance the memory performance. The resulting organic nano-floating gate memory (NFGM) device exhibits outstanding memory properties, including tremendous memory window (∼85 V), superhigh memory on/off ratio (∼109), long data retention (over 10 years) and eminent multilevel storage behavior, which are among the optimal performances in NFGM devices based on organic field effect transistors. Additionally, the device displays photoinduced-reset characteristic with low energy consumption erasing operation. This study provides novel avenues for the manufacture of simple and low-cost data storage devices with outstanding memory performance, multilevel storage behavior and suitability as platforms for integrated circuits.
研究领域:
电子材料
·
纳米技术
·
存储器件
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Xiaoqian Deng,Menghan Zhu,Jin Ke,Wenrui Li,Yefeng Feng,Bingwen Yang,Deping Xiong,Zuyong Feng,Miao He
SnO 2 –ZrO 2 composite nanoparticles were embedded in the few-walled carbon nanotubes (FWCNTs) network to synthesise a ternary SnO 2 –ZrO 2 -CNT nanocomposite by the hydrothermal and ball milling methods. The SnO 2 –ZrO 2 composite was uniformly dispersed in the CNT matrix. The CNTs in the composite alleviated the volume expansion during cycling, improved conductivity, and shortened the transmission path of electrons and Li + . Therefore, the SnO 2 –ZrO 2 -CNT composite showed high reversible capacity of 1072.2 mAhg −1 after 200 cycles at 0.2 Ag -1 with high initial coulomb efficiency of 77.9% and >98.8% in the following cycles, high-rate capacity of 653.6 mAhg −1 at 5.0 Ag -1 , and long-term capacity of 610.7 mAhg −1 at 5.0 Ag -1 after 1000 cycles. Because of its outstanding properties, the SnO 2 –ZrO 2 -CNT nanocomposite is a promising anode material for next-generation lithium-ion batteries.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）