JOURNAL OF ALLOYS AND COMPOUNDS
·
2017
·
IF 3.133
Shenjie Li,Tianyong Zha,Qiang Wang,Chengyu Wang,Yujiao Ren,Yanyan Chen,Daocheng Pan
We present a facile route for the fabrication of P-type Cu x S transparent and conducting thin films (TCTFs) using copper (I) oxide and butyl-dithiocarbamic acid as precursors by pulling method on glass. The as-deposited highly conductive crystalline Cu x S films showed high carrier concentration (∼3.11 × 10 22 cm −3 ), low electrical resistivity (∼1.02 × 10 −4 Ω cm) and conclusive p-type conduction. X-ray diffraction studies showed high crystallinity, and the optical transmission spectra in UV–vis–NIR region of such films were recorded, indicating that the transparency was over 75% with a band gap of 1.52 eV. The room-temperature sheet resistance increased from 9.9 to 302.4 Ω sq −1 with increasing baking temperature. The Cu x S/quantum dot bifacial thin films have been fabricated, and the experimental results indicated that luminescent, transparent, and conductive Cu x S/Cu-doped Zn y Cd 1-y S thin films have a very high potential application in thin film solar cells.
研究领域:
材料科学
·
光电材料
·
太阳能电池
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产品关联
DOI
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
·
2025
·
IF 6.6
Jingwen Li,Hui Yu,Lijuan Wang,Qing Ma,Dongkun Zhao,Baocheng Xu,Xinjing Dou,Lili Liu
This study investigated the protective effects of five colored PET films against phytosterol (PS) oxidation in vegetable oil. The transparent film demonstrated the lowest inhibition rates for the formation of phytosterol oxidation products (POPs) among the five coloured films, which inhibited PS oxidation solely by reducing light intensity. In contrast, the blue film exhibited superior light barrier characteristics, effectively blocking wavelengths corresponding to ultraviolet light and chlorophyll excitation bands. This dual mechanism significantly reduced both auto-oxidation and type II photooxidation pathways of PS. Consequently, the blue film increased inhibition rates for POPs (7α-OH-PS, 7β-OH-PS, 5α,6α-epoxy-PS, 7-keto-PS, 6β-OH-PS, and 5β,6β-epoxy-PS) from 22.12 %, 13.66 %, 15.08 %, 12.16 %, 12.93 %, and 10.70 % to 76.60 %, 75.29 %, 79.40 %, 75.41 %, 77.56 %, and 75.33 %, respectively. Mechanistic analysis revealed that the blue film's enhanced protection for PS oxidation originated from its inhibition of C7 pathway-mediated POP generation. While red, yellow, and green films operated through similar protective mechanisms, their efficacy varied significantly. The overall protective performance was ranked as follows: red ≈ blue > yellow > green > transparent. These findings provide critical insights for developing optimized packaging solutions to inhibit PS oxidation in lipid-containing food products.
研究领域:
食品科学
·
植物化学
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2012
·Vol. 24
·期 2
·658-661
·
IF 1.076
Yang Shihua,Xu JinBao,Gao Bo,Wang Lei,Chen Jing,Chen Xueying
Polycrystalline Ba 0.85 Ca 0.15 Ti 0.9 Zr 0.1 O 3 (BCZT) thin films with (100) preferential and random orientation are prepared on the LaNiO 3 electrodes coated on Si substrates by chemical solution deposition process. The results show that the two types of films stabilize in the pure perovskite structure. The ferro-paraelectric phase transitions of two types of films occur at the temperature ranges of 280.2–297.8 K and 278.4–287.6 K, respectively. The dielectric constant, relaxation time and tunability of the random orientation film are smaller than those of the (100) preferential film but both almost have the similar leakage current characteristics. The mechanism associated with the change of the electrical properties of the thin films is also discussed.
研究领域:
材料科学
·
物理学
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产品关联
DOI
高影响因子
International Journal of Applied Ceramic Technology
·
2024
·Vol. 21
·期 5
·3645-3651
·
IF 1.8
Jinghui Peng,Hengchang Nie,Yuou Yuan,Xiao Yong,Biao He,Genshui Wang,Fanglin Du,Liang Shi,Xiaofei Qu,Shuai Zhang
Mn-doped (1- x )Bi 0.5 (Na 0.8 K 0.2 ) 0.5 TiO 3 - x BiAlO 3 (Mn:BNKT- x BA) thin films were synthesized on lanthanum nickelate-coated silicon substrates by sol-gel method. The second phase issue of the film can be effectively addressed by optimizing the substrate, and the maximum polarization and breakdown strength can be increased by introducing the proper amount of Al 3+ , which is advantageous for the film for energy storage. The results have shown that the Mn:BNKT-0.03BA film exhibits superior ferroelectric properties (with remanent polarization (P r ) of 23.72 µC/cm 2 , maximum polarization (P max ) of 75.37 µC/cm 2 ), which could be an excellent candidate for ferroelectric thin film capacitors.
研究领域:
材料科学
·
电子工程
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Chengwen Bin,Xu Hou,Zeqing Yu,Luocheng Liao,Han Yang,Yunya Liu,Jie Wang
Flexible ferroelectric films with high polarization hold great promise for energy storage and electrocaloric (EC) refrigeration. Herein, we fabricate a lead-free Mn-modified 0.75 Bi(Mg0.5Ti0.5)O3–0.25 BaTiO3 (BMT–BTO) thin film based on a flexible mica substrate. Excellent EC performance with maximum adiabatic temperature change (ΔT ∼23.5 K) and isothermal entropy change (ΔS ∼33.1 J K–1 kg–1) is achieved in the flexible BMT–BTO film, which is attributed to the local structural transition and lattice disorder near 90 °C. Meanwhile, a good energy storage density of ∼70.6 J cm–3 and a quite high efficiency of ∼82% are realized in the same ferroelectric film, accompanied by excellent stability of frequency and electric fatigue (500–10 kHz and 108 cycles). Furthermore, there is no apparent variation in performance under different bending strains. These prominent properties indicate that the multifunctional BMT–BTO ferroelectric film is a promising candidate for applications of flexible energy storage and EC refrigeration.
研究领域:
材料科学
·
能源技术
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DOI
高影响因子
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
·
2024
·Vol. 39
·期 4
·814-818
·
IF 1.3
Wang Peng,Zhang Binbin,Liu Xiaofei,Zhang Xin,Tu Rong,Zhang Song,Li Baowen
It remains a big challenge to synthesize two-dimensional (2D) GaN material for applications in power nanodevices. Traditional synthetic methods require complex equipment and processes and time consuming. Here, we reported a two-step route to prepare polycrystalline 2D GaN film. The amorphous ultrathin Ga 2 O 3 film was first exfoliated from the surface of liquid gallium. In a vapor phase reaction, 2D Ga 2 O 3 film was then converted into 2D GaN film while maintaining the 2D morphology. Raman and high-resolution transmission electron microscope (HRTEM) analysis implies the successful synthesis of wurtzite-type GaN ultrathin film. This simple strategy proposed in this work will provide more opportunities for applications of GaN ultrathin film in many devices.
研究领域:
材料科学
·
纳米技术
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产品关联
DOI
高影响因子
CRYSTENGCOMM
·
2015
·Vol. 17
·期 45
·8697-8702
·
IF 4.034
Xiaolin Wu,Jiang-Long Wang,Hongrui Zhang,Shufang Wang,Shengjun Zhai,Yaguang Li,Dogheche Elhadj,Guangsheng Fu
c-axis oriented Bi1−xPbxCuSeO (0 ≤ x ≤ 0.8) single crystalline thin films have been successfully epitaxially grown on SrTiO3 (001) substrates via the pulsed laser deposition technique. Detailed X-ray diffraction and transmission electron microscopy measurements reveal the excellent c-axis and ab-plane texture of the films. As the Pb doping concentration increases, both the resistivity and the Seebeck coefficient decrease due to the increase in hole carrier concentration. The highest power factor of about 1.2 mW m−1 K−2 has been achieved in Bi0.96Pb0.06CuSeO single crystalline thin films at 673 K, which is much higher than those of polycrystalline ceramics with random orientation, suggesting that c-axis oriented BiCuSeO-based single crystalline thin films might have great potential for application in thermoelectric thin film devices.
研究领域:
材料科学
·
物理学
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DOI
高影响因子
Chemistry-An Asian Journal
·
2018
·Vol. 13
·期 14
·1836-1841
·
IF 3.692
Yingyi Ma,Le Xu,Zijian Wu,Wenlong Zhang,Mingyan Zhang,Zhenfeng He
Graphical Combover : A honeycomb-patterned porous film was prepared through a microemulsion method and used as an effective coating for improving the dielectric and water-resistance properties of polyimide (PI) film without sacrificing its mechanical properties (see figure). Its comprehensive performance was regulated by tuning the structure of the coated porous film. A honeycomb-patterned porous film was conveniently prepared by means of the microemulsion method and then used as an effective coating for improving the dielectric properties and water resistance of polyimide (PI) film while maintaining its mechanical properties. The dielectric properties could be regulated by tuning the structure of the porous film through controlling its formation conditions. When suitable conditions were used, the prepared composite PI film exhibited a significant reduction of 28.3 % in its dielectric constant and 9.48–54.99 % in dielectric loss accompanied by an extremely low water uptake of 0.62 % relative to the 2.47 % of flat PI film. The composite PI film also displayed excellent durability under moist conditions, as the dielectric constant was still below 2.4 after exposure to 75 % relative humidity for more than 12 h. This provides a novel method to improve and control the dielectric properties of materials. It also suggests that this film is a suitable candidate for coating dielectric materials in high-humidity environments.
研究领域:
材料科学
·
化学工程
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DOI
高影响因子
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
·
2018
·Vol. 18
·期 11
·7566-7572
·
IF 1.354
Wu Weihua,Javaid Kashif,Liang Lingyan,Yu Jingjing,Liang Yu,Song Anran,Yao Meiyi,Lan Linfeng,Cao Hongtao
Aqueous solution induced method is regarded as a promising route to realize high-performance metal oxide thin film transistors at low temperature with an economical and environment friendly process. In this paper, we report the synthesis of multi-component AlO
x
:Y dielectrics
with a small amount of yttrium homogeneously distributed in AlO
x
matrix through an alternate spin-coating process. The AlO
x
:Y films demonstrate superior characteristics, such as improved surface morphology, better capacitance coupling effect, smaller dielectric
dispersion, and similar leakage current density compared to AlO
x
films of nearly twofold thickness. By elevating the pre-baking temperature, the dielectric performance of AlO
x
:Y films has been further optimized, exhibiting a near-atomically smooth surface,
a low current density of 8.2×10−8 A cm−2 at 2 MV/cm, and a dielectric constant of 7.4. And the corresponding thin-film transistor with amorphous InGaZnO channel shows a narrow working voltage range (<2.5 V), a field-effect mobility around 10
cm2 V−1 s−1, and an on/off current ratio exceeding 107 coupled with the gate current lower than 1 nA in the entire operation range.
研究领域:
材料科学
·
电子工程
✓ 已验证
DOI
高影响因子
Frontiers of Optoelectronics
·
2024
·Vol. 17
·期 1
·1-7
·
IF 4.1
Li Zha,Li Wancai,Li Dehui,Tang Wei,Liang Huageng,Song Huaibing,Chen Chao,Gao Liang,Tang Jiang
Chiral inorganic semiconductors with high dissymmetric factor are highly desirable, but it is generally difficult to induce chiral structure in inorganic semiconductors because of their structure rigidity and symmetry. In this study, we introduced chiral ZnO film as hard template to transfer chirality to CsPbBr 3 film and PbS quantum dots (QDs) for circularly polarized light (CPL) emission and detection, respectively. The prepared CsPbBr 3 /ZnO thin film exhibited CPL emission at 520 nm and the PbS QDs/ZnO film realized CPL detection at 780 nm, featuring high dissymmetric factor up to around 0.4. The electron transition based mechanism is responsible for chirality transfer. Graphical Abstract
研究领域:
材料科学
·
光学
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产品关联
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2017
·
IF 4.798
Youxiu Wei,Mu Chen,Weiming Liu,Lei Li,Yue Yan
Electrochromic devices (ECDs) with different liquid electrolytes were fabricated using NiO film as counter electrode, WO 3 film as working electrode. The effect of liquid electrolytes containing different lithium salts (LiClO 4 , LiPF 6 , LiTFSI) on films and ECDs was investigated, such as transmittance change, charge density, memory effect and cyclic stability. Films or ECDs using LiPF 6 electrolyte have excellent electrochromic properties but low cyclic stability, compared with LiClO 4 and LiTFSI electrolytes. In order to deeply understand the effect of electrolyte on films and devices, the voltage distribution of films based on an analog cell and electrochemical impedance spectroscopy (EIS) were measured and analyzed in different lithium salts electrolytes. Results show that voltage distribution and EIS characteristics of films have obvious difference in liquid LiClO 4 , LiPF 6 and LiTFSI electrolytes. Voltage distribution on NiO and WO 3 films is unbalanced and the impedance of films in bleached and colored states is different in the same electrolyte.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2019
·
IF 6.019
Zhiqiang Xie,Qingqing Liu,Qianqian Zhang,Bingxin Lu,Jin Zhai,Xungang Diao
Mesoporous tungsten trioxide (WO 3 ) and nickel oxide (NiO) electrochromic (EC) thin films have been fabricated by sol-gel method with assistant of tri-block copolymer [PEO 132 PEO 50 PEO 132 ] (F108). By controlling weight ratio of F108 and calcination temperatures, uniform and transparent mesoporous films are fabricated. Both WO 3 and NiO films are comprised by nanoparticles with diameters of ca .10 nm, mesopores with pore size of approximately 6 nm are distributed in the films. The thickness of the films are ca . 400 nm. The as-prepared films have ultra-fast switching time during EC redox reactions . Applied with positive and negative voltages of 40 s respectively, the coloration/bleaching time of WO 3 and NiO films are 5.7 s/2.3 s and 0.9 s/3.8 s, which is faster than that of comparative EC films fabricated by sol-gel method without F108 (coloration/bleaching time of WO 3 and NiO films are 17.5 s/14.5 s and 13.6 s/4.9 s) and EC films fabricated by magnetron sputtering method (coloration/bleaching time of WO 3 and NiO films are 29.4 s/21.3 s and 9.6 s/7.5 s). Quasi-solid state electrochromic device assembled with mesoporous WO 3 and NiO thin films has excellent EC performance, such as fast switching speed (3.2/1.1 s for coloration/bleaching time), large optical modulation of about 45% (at 600 nm), high coloration efficiency (130.8 cm 2 /C at the wavelength of 600 nm) and good cycle stability. These excellent properties are derived from mesoporous channels in the films. For the mesoporous channels can shorten the diffusion paths and make it easier for ions to transport in films.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
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