LANGMUIR
·
2025
·
IF 3.9
Yue He,Jia Tian,Fangpei Li,Wenbo Peng,Yongning He
Tribovoltaic effect is an emerging phenomenon occurring between two materials, which can generate direct current (DC) rather than alternate current (AC) at the contact interface. Though the existence of a tribovoltaic effect indeed brings up a new method for power supply of critical sensors using the Internet of Things technology, the wear and damage of tribovoltaic materials related to the surface topography during the sliding process is still nonnegligible. In this work, the influence of surface topography on the tribovoltaic effect between semiconductors is investigated by means of a lateral sliding mode triboelectric nanogenerator composed of ZnO and Si (ZnO/Si LS-TENG). Results show that the increase of effective area has a great improvement on the output of the tribovoltaic effect. In addition, a novel operating mechanism and theoretical model based on the energy band theory are proposed to illustrate the semiconductor–semiconductor tribovoltaic effect clearly.
研究领域:
纳米发电机
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半导体物理
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表面工程
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能量收集
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物联网传感器
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DOI
PubMed
高影响因子
Coatings
·
2021
·Vol. 11
·期 9
·1099
·
IF 2.881
Yifei Wang,Xiaoping Zou,Jialin Zhu,Chunqian Zhang,Jin Cheng,Junqi Wang,Xiaolan Wang,Xiaotong Li,Keke Song,Baokai Ren,Junming Li
With the development of the semiconductor industry, research on photoelectronic devices has been emphasized. In this paper, a molecular semiconductor material with a narrow bandgap of hexane-1,6-diammonium pentaiodobismuth (HDA-BiI5) was utilized to prepare photodetectors without electron transport layers. Using a single light source, the effects of different wavelengths and different powers on the photoresponsivity, switching ratio, specific detectivity, and external quantum efficiency of the device were investigated. It is demonstrated that this device has excellent responsivity, specific detectivity, stability, and repeatability, and this work will help expand the application of molecular semiconductor materials for photodetection.Keywords:photodetector;molecular semiconductor;thin films
研究领域:
材料科学
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光电技术
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
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IF 8.1
Dong Feng,Tingyuan Zhang,Jiajia Wang,Wei Wang,Keying Lin,Baojun Ma,Fuxiang Zhang
The capacitance effect of semiconductor photocatalysts for hydrogen production is significant; however, the intrinsic role of capacitance in relation to the morphologies of photocatalysts remains unclear. Herein, we designed three different morphologies of ZnIn 2 S 4 semiconductor material—spherical, bulk, and rod-like—to determine their capacitance. In this study, the small capacitance characteristics of spherical ZnIn 2 S 4 (0.363F/g) enabled photoelectrons to quickly transfer to the surface and participated in the photocatalytic hydrogen evolution reaction, leading to a photocatalytic activity of 159 μmol/h/g. When TiVAlC nanoparticle with M n+1 AX n (MAX) nanostructure was employed as efficient co-catalyst, TiVAlC/ZnIn 2 S 4 -S achieved an increased activity of 285 μmol/h/g at 420 nm, which was 1.75 times that of TiVAlC/ZnIn 2 S 4 -B and 2.39 times that of TiVAlC/ZnIn 2 S 4 -R. This enhanced performance was attributed to the synergistic effect of the high-efficiency semiconductor photocatalyst ZnIn 2 S 4 -S with small capacitance and the superior conductivity of the Mxene material TiVAlC.
研究领域:
材料科学
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能源技术
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DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2021
·Vol. 31
·期 30
·2103197
·
IF 18.808
Zheng Ma,Tian Xu,Wang Li,Yiming Cheng,Jinmeng Li,Dan Zhang,Qinghui Jiang,Yubo Luo,Junyou Yang
A new p-type high entropy semiconductor AgMnGeSbTe 4 with a band gap of ≈0.28 eV is reported as a promising thermoelectric material. AgMnGeSbTe 4 crystallizes in the rock-salt NaCl structure with cations Ag, Mn, Ge, and Sb randomly disordered over the Na site. Thus, a strong lattice distortion forms from the large difference in the atomic radii of Ag, Mn, Ge, and Sb, resulting in a low lattice thermal conductivity of 0.54 W m −1 K −1 at 600 K. In addition, the AgMnGeSbTe 4 exhibits a degenerate semiconductor behavior and a large average power factor of 10.36 µW cm −1 K −2 in the temperature range of 400–773 K. As a consequence, the AgMnGeSbTe 4 has a peak figure of merit ( ZT ) of 1.05 at 773 K and a desirable average ZT value of 0.84 in the temperature range of 400–773 K. Moreover, the thermoelectric performance of AgMnGeSbTe 4 can be further enhanced by precipitating of Ag 8 GeTe 6 , which acts as extra scatting centers for holes with low energy and phonons with medium wavelength. The simultaneous optimization in power factor and lattice thermal conductivity yields a peak ZT of 1.27 at 773 K and an average ZT of 0.92 (400–773 K) in AgMnGeSbTe 4 -1 mol% Ag 8 GeTe 6 .
研究领域:
材料科学
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热电学
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固态化学
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能量转换材料
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DOI
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2022
·
IF 4.644
Yuewen Li,Yu Zhang,Xing Hou,Chunkun Lin,Degang Bu,Yalin Lan,Na Li,Shuyao Wu,Shuo Li,Xi-Ming Song
Seeking novel solar energy utilization and conversion methods has always been a frontier topic in energy research. Here, we propose a new way to directly photoelectrodeposit metals using solar energy based on semiconductor energy band theory . Three kinds of semiconductor photoanodes (TiO 2 , BiVO 4 and Fe 2 O 3 ) are employed to deposit metallic Cu or Bi at the cathode under illumination without external voltage. It is found that when TiO 2 and BiVO 4 are used as photoanodes, Cu, Cu 2 O and Bi can be continuously deposited on the cathode, but when Fe 2 O 3 photoanode is irradiated, no material comes out. The results prove that the potential of electrons in the conduction band determines whether photoelectric deposition occurs or not. The related mechanism involves the oxygen reduction reaction (OER) of the valence band holes of the photoanode, the collection of conduction band electrons by back electrode, as well as the reduction of metal ions on the counter electrode. In addition, we also put forward the concept of using the deposited Cu or Bi as the metal electrode to form a new metal-air battery to release chemical energy of the deposited metal.
研究领域:
材料科学
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能源研究
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DOI
高影响因子
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
·
2025
·Vol. 131
·期 5
·1-9
·
IF 2.8
Liao Gengcheng,Huang Zongyu,Ren Long,Qi Xiang
Directly growing oxides on the surface of liquid metal (LM) offers a novel strategy to effectively integrate flexible conductive substrate with semiconductive layer for functional devices including photodetectors. Gallium-based liquid metal with native oxides surface typically demonstrates such LM/semiconductor construction with attractive photoelectric responsivity, however, the relevant photo-electrode lacking efficient response to visible light due to the wide band-gap of Ga-oxides. This paper presents a straightforward fabrication route containing printing and in-situ reaction growing for the preparation of liquid metal functionalized with narrow-band gap semiconductor ( e.g. , Cu 2 O). The resulting LM/metal-oxides heterostructure exhibits a well-matched liquid–solid contact and good interfacial charge transfer between the soft conductive substrate and active surface components. Characterizations including scanning electron microscopy (SEM), Raman spectroscopy, and UV–visible absorption spectroscopy confirm the successful preparation of the Cu 2 O thin layer with an expanded absorption spectrum range. The as-fabricated photoelectrode consisted of LM-Cu 2 O, through photoelectrochemical (PEC) tests, presents fast photo-responsibility under the simulated sunlight illumination and self-powered capability. Specifically, the LM-Cu 2 O based PEC photodetector shows maximum photoresponsivity of − 70 μA/W and photocurrent density of − 9.5 μA/cm 2 at a bias voltage of 0 V. Our results provide a general method for the design and manufacture of novel photodetectors.
研究领域:
材料科学
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光电技术
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DOI
高影响因子
Micromachines
·
2022
·Vol. 13
·期 6
·956
·
IF 3.523
Xiangxiang Gao,Hai-Yang Liu,Jincheng Zhang,Jian Zhu,Jingjing Chang,Yue Hao
The wafer-scale fabrication of two-dimensional (2D) semiconductor thin films is the key to the preparation of large-area electronic devices. Although chemical vapor deposition (CVD) solves this problem to a certain extent, complex processes are required to realize the transfer of thin films from the growth substrate to the device substrate, not to mention its harsh reaction conditions. The solution-based synthesis and assembly of 2D semiconductors could realize the large-scale preparation of 2D semiconductor thin films economically. In this work, indium selenide (In2Se3) nanosheets with uniform sizes and thicknesses were prepared by the electrochemical intercalation of quaternary ammonium ions into bulk crystals. Layer-by-layer (LbL) assembly was used to fabricate scalable and uniform In2Se3thin films by coordinating In2Se3with poly(diallyldimethylammonium chloride) (PDDA). Field-effect transistors (FETs) made from a single In2Se3flake and In2Se3thin films showed mobilities of 12.8 cm2·V−1·s−1and 0.4 cm2·V−1·s−1, respectively, and on/off ratios of >103. The solution self-assembled In2Se3thin films enriches the research on wafer-scale 2D semiconductor thin films for electronics and optoelectronics and has broad prospects in high-performance and large-area flexible electronics.Keywords:two dimensional semiconductors;layer-by-layer assembly;field-effect transistors
研究领域:
材料科学
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电子工程
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DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2014
·Vol. 3
·期 7
·3416-3424
·
IF 0
Zhongyi Wu,Guohua Zhao,Yajun Zhang,Jian Liu,Ya-nan Zhang,Huijie Shi
A solar-driven dual photoelectrode photocatalytic fuel cell (PFC) based on n-type semiconductor photoanode and p-type semiconductor photocathode is reported for wastewater treatment with simultaneous hydrogen production. The PFC shows a superior performance for phenol degradation and hydrogen production with a maximum TOC removal rate of 84.2% and a total hydrogen production rate of 86.8 μmol cm−2 in 8 hours which is much higher than other similar researches. Compared to the system comprised of a photoanode (photocathode) and Pt for phenol degradation (hydrogen production), the results prove that there is a synergistic effect between the two photoelectrodes. This is because the electrons are preferentially stored on the photocathode for hydrogen production and holes on the photoanode for pollutant degradation. Several semiconductors are chosen as photoelectrodes to investigate the factors influencing the performance of the PFC system. The VOC value of the PFC increases with the difference of Fermi level between the two photoelectrodes. This PFC system provides a new approach for efficient energy recovery from wastewater.
研究领域:
环境科学
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能源化学
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半导体光催化
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电化学
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可持续能源
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水处理技术
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DOI
JOURNAL OF LUMINESCENCE
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2020
·
IF 3.28
Chao Zhang,Tingting Li,Weijia Wen,Xiangdong Luo,Lijuan Zhao
Perovskite-semiconductor composites formed by high quality CsPbBr 3 nanocrystals embedded in ZnSe microsphere were prepared. The optical properties of pure CsPbBr 3 and composites were studied in detailed. Highly enhanced luminescence from CsPbBr 3 -ZnSe composites was observed and the excitation power-dependent photoluminescence of samples showed that the recombination in all samples involves excitons . The recombination lifetimes of composites for both fast and slow decays increased compared with pure perovskite, indicating that the nonradiative combination was suppressed which may be possibly due to the decrease of both bulk and surface defects , owing to the passivation of ZnSe. Besides, the visible light absorption range of composites was extended, which suggests increasing efficiency of photoelectric conversion and the utilization of sunlight.
研究领域:
材料科学
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光学
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DOI
高影响因子
Electronics
·
2025
·Vol. 14
·期 5
·1050
·
IF 2.6
Xiang Gao,Ying Chen,Pengcheng Xu,Dan Zheng,Xinxin Li
The selective detection of propane gas molecules using semiconductor gas sensors has always been a challenge within research. In this study, we successfully synthesized a γ-Fe2O3nanomaterial with a selective catalytic effect on propane and loaded it onto a ZnO sensing material to construct a double-layer microsensor, which showed good sensing response characteristics in the detection of the refrigerant R290 (which is mainly propane). In addition, we also prepared a series of iron oxides, including nanomaterials such as α-Fe2O3, Fe3O4, and FeO, as well as γ-Fe2O3materials with different specific surface areas obtained at various processing temperatures, and we carried out gas sensing research on R290. The results show that the γ-Fe2O3material has a better sensitivity to R290, and the γ-Fe2O3material calcined at 200 °C shows the best performance. Our results can provide a theoretical basis for the design and optimization of semiconductor gas sensors for alkane detection.
研究领域:
材料科学
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传感器技术
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DOI
高影响因子
MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 2
·1-11
·
IF 5.3
Li Kaiwei,Jiang Han,Wang Liying,Wang Rui,Zhang Xuewei,Yang Libin,Jiang Xin,Song Wei,Zhao Bing
Semiconductor materials have become a competitive candidate for surface-enhanced Raman scattering (SERS) substrate. However, powdered semiconductors are difficult to execute a fast in situ detection for trace analytes. Here, we developed a new flexible semiconductor SERS substrate by in situ densely growing anatase TiO 2 nanoparticles on the surface of cotton fabric through a filtration-hydrothermal method, in which TiO 2 exhibits excellent controllability in size and distribution by regulating the ratio of water to alcohol in synthesis and the number of filtration-hydrothermal repetitive cycle. Cotton fabric/TiO 2 (Cot/TiO 2 ) substrate exhibits a high SERS activity and excellent spectral repeatability. The developed substrate has an ultra-high stability that can withstand long-term preservation; it can even resist the corrosions of strong acid and alkali, as well as high temperature up to 100 °C and low temperature down to − 20 °C. The flexible substrate can be used to carry out a rapid in situ detection for quinolone antibiotic (enrofloxacin and enoxacin) residues on the fish body surface by using a simple swabbing method, with high quantitative detection potential (up to an order of magnitude of 10 −7 M), and even for the simultaneous detection of both drug residues. The flexible substrate also exhibits an excellent recyclability up to 6 recycles in the actual SERS detection. Graphical Abstract
研究领域:
材料科学
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分析化学
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环境科学
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DOI
PubMed
高影响因子
MOLECULES
·
2017
·Vol. 22
·期 5
·859
·
IF 2.861
Yuxue Zhou,Pengfei Lv,Xiangdong Meng,Yanping Tang,Pingping Huang,Xiaobing Chen,Xiaoshuang Shen,Xianghua Zeng
Two-dimensional thin Bi2WO6nanoplates have been fabricated using a cetyltrimethylammonium bromide (CTAB)-assisted hydrothermal method. We investigated the proposed formation mechanism based on the crystalline structures of the thin Bi2WO6nanoplates. The high adsorption ability and excellent visible-light driven photocatalytic activities of the Bi2WO6nanoplates were illustrated, in view of exposed (001) facets of nanoplates possessing faster separation of photo-generated charge carriers and increased catalytically active sites. Such a cost-effective way to obtain Bi2WO6nanoplates offers new possibilities for the design of adsorptive semiconductor photocatalysts with strengthened photocatalytic activities.Keywords:Bi2WO6nanoplates;semiconductor photocatalyst;visible light-driven
研究领域:
材料科学
·
环境科学
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）