Electronic Materials Letters (ELECTRON MATER LETT)

Publisher: Springer Verlag

Current impact factor: 1.98

Impact Factor Rankings

2016 Impact Factor Available summer 2017
2014 / 2015 Impact Factor 1.98
2013 Impact Factor 3.977
2012 Impact Factor 1.87
2011 Impact Factor 1.819
2010 Impact Factor 1.594
2009 Impact Factor 1.292

Impact factor over time

Impact factor
Year

Additional details

5-year impact 1.88
Cited half-life 2.30
Immediacy index 0.33
Eigenfactor 0.00
Article influence 0.34
ISSN 1738-8090
OCLC 71278627
Material type Periodical
Document type Journal / Magazine / Newspaper

Publisher details

Springer Verlag

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    • Author's pre-print on pre-print servers such as arXiv.org
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    • Articles in some journals can be made Open Access on payment of additional charge
  • Classification
    green

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: In this study, ZnO nanoparticles were fabricated using a simple and novel combustion method without calcination. The sensor material was structurally and morphologically characterized using simultaneous differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), x-ray diffraction (XRD), scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET), and transmission electron microscopy (TEM). The sample containing 3 mol tartaric acid (ZTC-3) exhibited excellent ethanol sensing properties at the optimum temperature of 330°C. The relationships among the gas response, temperature, response time (recovery time), concentration, and gas species were investigated. The ZTC-3 exhibited response and recovery times of 7 and 38 s to 100 ppm ethanol, as well as excellent response and good selectivity to ethanol gas. Such a ZnO nanoparticle structure could be potentially use for fabricating ethanol sensors.
    No preview · Article · Jan 2016 · Electronic Materials Letters
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    ABSTRACT: During the initial development of wearable computing devices, the conductive fibers of Al thin film on cylindrical PET monofilament were fabricated by thermal evaporation. Their electrical current-voltage characteristics curves were excellent for incorporation into wearable devices such as fiber-based cylindrical capacitors or thin film transistors. Their surfaces were modified by UV exposure and dip coating of acryl or PVP to investigate the surface effect. The conductive fiber with PVP coating showed the best conductivities because the rough surface of the PET substrate transformed into a smooth surface. The conductivities of PET fiber with and without PVP were 6.81 × 103 Ω−1cm−1 and 5.62 × 103 Ω−1cm−1, respectively. In order to understand the deposition process of Al thin film on cylindrical PET, Al thin film on PET fiber was studied using SEM (Scanning Electron Microscope), conductivities and thickness measurements. Hillocks on the surface of conductive PET fibers were observed and investigated by AFM on the surface. Hillocks were formed and grown during Al thermal evaporation because of severe compressive strain and plastic deformation induced by large differences in thermal expansion between PET substrate and Al thin film. From the analysis of hillock size distribution, it turns out that hillocks grew not transversely but longitudinally.
    No preview · Article · Jan 2016 · Electronic Materials Letters
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    ABSTRACT: Lithium cobalt phosphate (LCP) is a high-voltage cathode material used in highenergy- density lithium-ion batteries. With a novel composite synthesis method, multi-wall carbon nanotube (MWCNT)-embedded LCP nanocomposites (LCPCNT composites) are synthesized to enhance the electrical conductance of LCP particles, reducing charge-transfer resistance. The LCP-CNT composites with enhanced electrical conductance approximately doubled cell capacity compared to a cell with a bare LCP cathode. The crystal structure of LCP-CNT composite particles is characterized by X-ray diffraction; the microstructures of the embedded MWCNTs inside LCP particles are confirmed by transmission and scanning electron microscopy with focused ion beam procedures. Electrochemical impedance spectroscopy shows the charge-transfer resistance of the cell with the LCP-CNT composite (1.0 wt. % CNT) cathode decreases to ~80 Ω, much smaller than the ~150 Ω charge-transfer resistance of the bare-LCP cathode cell. Based on battery test and impedance analysis, the main factors affecting the capacity increment are the reduced charge transfer resistance and the uniform distribution of MWCNTs, which is formed during the gelation step of the LCP synthesis procedure.
    No preview · Article · Jan 2016 · Electronic Materials Letters
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    ABSTRACT: This study introduces dielectric/metal/dielectric multilayers based on a WO3/Ag/WO3 (WAW) anode and Yb/BCP/Ag/WO3 (Yb/BAW) cathode for use in organic photovoltaic cells (OPVs). Here, the Yb/BCP hybrid multilayer provides an effective electron transport layer (ETL), while the Yb doping ensures that voltage loss due to interfacial band bending is effectively suppressed. Transparent OPVs produced with a structure of WAW/P3HT:PCBM/Yb/BAW are shown to exhibit a power conversion efficiency (PCE) of up to 2.42%, achieving a 65.4% fill factor (FF) under one sun irradiation. These results indicate that the use of Yb in transparent OPVs is vastly superior to other ETLs, as it improves the majority of critical parameters such as short circuit current (Jsc), fill factor (FF) and PCE. This is attributed to a decrease in the series resistance and increase in the shunt resistance, while an increase in electron mobility also helps to ensure faster sweep out.
    No preview · Article · Jan 2016 · Electronic Materials Letters
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    ABSTRACT: Ultra-fine-pitch chip-on-film (COF) packages such as display-drive-integrated circuit (DDI) modules are manufactured through an underfill process following Au-to-Sn thermo-compression bonding. As the interconnection pitch becomes finer and is reduced to less than 25 um, however, an alternative flip-chip technology, such as non-conductive paste (NCP) bonding, is needed in place of the capillary underfill process. In this study, new NCP formulations are investigated to achieve rapid curing at a temperature high enough to form a metallic bond between the bump and the pad. An appropriate curing agent was determined through a dielectric analysis (DEA). COF samples were prepared with a DDI chip 11,772 × 924 um in size and with a 38 um-thick polyimide flexible printed circuit by both NCP bonding and thermo-compressionunderfill processes. Pressure cooker tests lasting as long as 192 h revealed that the reliability of the NCP sample against high temperatures and high humidity levels exceeded somewhat that of the underfill sample. In thermal cycling test up to 500 cycles, however, the reliability of the NCP sample was inferior to that of the underfill sample. It was considered that unbonded faults and NCP trapping at the bump-to-pad joint were responsible for the premature failure of the NCP sample under a thermal cycling condition.
    No preview · Article · Jan 2016 · Electronic Materials Letters
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    ABSTRACT: In this work, the electrical conductivity of poly(3,4-ethylenedioxythiophene): poly(styrene sulfonate) (PEDOT:PSS) films was effectively enhanced by binary secondary doping. Initially, doping with 5 vol.% dimethyl sulfoxide (DMSO) improved the electrical conductivity from 0.3 S cm−1 to 437 S cm−1 and a further increase to 950 S cm−1 was achieved by adding LiClO4. The conductivity value we report here is one of the highest reported for pretreated PEDOT:PSS films. The obtained maximum electrical conductivity is almost 3000 times higher than that shown by pristine PEDOT:PSS films. The increase in the electrical conductivity is ascribed to the synergistic effect of the two dopants. Fourier transform infrared spectra indicated the absence of any changes to the chemical structure of PEDOT:PSS. Atomic force microscopy images demonstrate an increased surface roughness and suggest the occurrence of conformational changes of PEDOT chains from the coiled to coil-extended one, which is the key reason for the electrical conductivity enhancement. The pretreatments we propose here are rapid, simple and effective for the large-scale preparation of high-conductivity PEDOT:PSS films.
    No preview · Article · Jan 2016 · Electronic Materials Letters
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    ABSTRACT: M-type strontium ferrite (SrFe12O19: SrM) with two different shapes were synthesized by a simple and benign process. One is peanut-like shape, and the other is hexagonal platelet. These shapes were controlled by the shape and size of precursor Fe3O4 particles. A mixture of submicron- or nanometer-sized Fe3O4 particles and SrCO3 nanoparticles was calcined to transform to SrM, followed by acid-washing to remove secondary phase from SrM particles. Static magnetic properties, magnetic interactions, and thermomagnetic stability of the SrM particles were studied. The measured saturation magnetization and intrinsic coercivity are 74.2 emu/g and 4431 Oe, respectively, for the peanut-like SrM particles and 73.6 emu/g and 5360 Oe for the hexagonal SrM platelets. The saturation magnetization is close to the theoretical value of 76 emu/g. Both types of SrM show dipolar interactions and good thermomagnetic stability, i.e. α = Δσ s /σ s = −0.16%/K and β = ΔH ci/H ci = 0.15%/K for the peanut-like SrM particles and α = −0.12%/K and β = 0.12%/K for the hexagonal SrM platelets. The temperature coefficient of intrinsic coercivity (β) is positive and magnetization still remains high at 400 K; 60 emu/g for the hexagonal SrM platelets and 50 emu/g for the peanut-like SrM particles.
    No preview · Article · Jan 2016 · Electronic Materials Letters
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    ABSTRACT: A series of Ca1-x Smx Mn1-y Wy O3-δ (0.05 ≤ x ≤ 0.25 and 0.05 ≤ y ≤ 0.2) was prepared by the solid-state reaction technique. The partial substitution of Sm3+ for Ca2+ and of W6+ for Mn4+ in CaMnO3-δ reduced the grain size and density. The substitution of Sm3+ and W6+ yielded a marked increase in electrical conductivity and a decrease in the absolute value of the Seebeck coefficient due to an increase in electron concentration. This gave rise to improved thermoelectric properties. A maximum power factor (2.07 × 10-4 Wm-1K-2) was obtained at 800°C for Ca0.9Sm0.1MnO3-δ . It is believed that the substitution of Sm3+ for Ca2+ is a promising approach for enhancing the thermoelectric performance of CaMnO3-δ .
    No preview · Article · Jan 2016 · Electronic Materials Letters
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    ABSTRACT: Aluminum induced crystallization (AIC) of amorphous silicon was studied for thin-film solar cell. The AIC have been usually researched on glass substrate which has smooth surface. However, in this paper, the graphite plate was used as a substrate for using thin-film solar cell which has 1μm roughness. The growth silicon layer characteristic could be relatively different with that using glass substrate by the surface roughness. Therefore, the properties of crystallized silicon layer were studied for grain size analysis with variation in temperature and time during the AIC annealing process. The crystalline fraction and crystallinity was analyzed by Optical microscope, X-ray diffraction (XRD), and Raman spectrometer measurement methods. Additionally, the grain size was also relatively analyzed with FWHM results. As a result of measurements, crystalline fraction of grown silicon was increased with the increasing of temperature and time. The maximum crystalline fraction of grown silicon was 92.85% for 2400 minutes of annealing duration at 500°C.
    No preview · Article · Jan 2016 · Electronic Materials Letters
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    ABSTRACT: We report the synthesis of porous silicon nanowires through the metalassisted chemical etching of porous silicon in a solution of hydrofluoric acid and hydrogen peroxide. The morphology of porous silicon nanowires was characterized by scanning electron microscopy and transmission electron microscopy. The etch rate of the porous silicon nanowires was faster than that of silicon nanowires, but slower than that of porous silicon. The porous silicon nanowires distributed uniformly on the entire porous silicon layer and the tips of the porous silicon nanowires congregated together. The single crystalline and sponge-like porous structure with the pore diameters of less than 5 nm was confirmed for the porous silicon nanowires.
    No preview · Article · Jan 2016 · Electronic Materials Letters
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    ABSTRACT: Polycrystalline YCrO3 thin films were deposited on (111) Pt/Ta/glass substrates by pulsed laser deposition. The YCrO3 thin films exhibited good ferroelectric properties with remnant polarization of about 5 µC/cm2. Large leakage current was observed by I-V curve and ferroelectric hysteresis loop. The YCrO3 resistive random access memory (RRAM) capacitor showed unipolar switching behaviors with SET and RESET voltages higher than those of general NiO RRAM capacitors.
    No preview · Article · Jan 2016 · Electronic Materials Letters
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    ABSTRACT: New red-emitting phosphors R2Zr3(MoO4)9:Eu3+ (R = La, Sm, Gd) were prepared using the convenient solid-state reaction method. The samples were characterized by X-ray powder diffraction (XRD) measurements and structural refinements. The luminescence properties were investigated by photoluminescence spectra, decay curves, and absolute internal quantum efficiency (QE). The phosphors exhibited bright red luminescence corresponding to the electric dipole transition 5D0→7F2 at 615 nm under near UV light excitation. The thermal stability of the luminescence was investigated using temperature-dependent intensities at temperatures from 20 to 170°C. The results indicate that Gd2Zr3(MoO4)9:Eu3+ could be potentially considered for lighting due to its qualities, including their excitation spectra, QEs, red color coordinates, and thermal stability.
    No preview · Article · Jan 2016 · Electronic Materials Letters
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    ABSTRACT: Amorphous LaZnSnO thin films with different La doping concentration are prepared by a combustion solution process and the electrical performances of thin film transistors (TFTs) are investigated. The influence of La content on the structure, oxygen vacancies, optical and electrical performance of LaZnSnO thin films are investigated. At an appropriate amount of La doping (15 mol.%), LaZnSnO-TFT shows a superior electrical performance including a mobility of 4.2 cm2/V s, a subthreshold swing of 0.50 V/decade and an on/off current ratio of 1.9 × 107. The high performance LaZnSnO-TFT is attributed to the better interface between SiO2 and LaZnSnO channel layer and the suppression of oxygen vacancies by optimizing La content. It suggests that La doping can be a useful technique for fabricating high performance solution-processed oxide TFTs.
    No preview · Article · Jan 2016 · Electronic Materials Letters
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    ABSTRACT: In this study, graphene nanosheets (GNS) prepared through a liquid exfoliation technique are dispersed in thermoplastic polyurethane (TPU) at a volume fraction (Vf) of up to 0.19. Then, the electrical and mechanical properties of the obtained composites are characterized. The dielectric spectroscopy shows an excessive variation in dielectric constant (1.1 to 3.53 × 107) and dielectric tangent loss (0.03 to 2515) with varying Vf over the frequency range of 25 kHz to 5 MHz. A considerable enhancement in electrical conductivity (DC) is found, from 3.87 × 10-10 S/m (base polymer) to 53.5 S/m for the 0.19 Vf GNS-TPU nanocomposite. The GNS-TPU composites are mechanically robust, with a considerable increase in stiffness (~4-fold) and strength (almost twice), maintaining its ductility up to 0.09 Vf GNS. The high dielectric constant at lower frequencies is attributed to the well-established Maxwell-Wagner polarization effect, whereas the high dielectric tangent loss is due to leakage currents as a physical conducting network is formed at high filler loadings. The layered structure, high aspect ratio, and improved dispersion of GNS are the main reasons for the improvement in both the dielectric characteristics and the mechanical properties of the host polymer.
    No preview · Article · Jan 2016 · Electronic Materials Letters
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    ABSTRACT: Polyaniline (PAni) is a p-type conductive polymer and its conductivity decreases upon exposure to ammonia. Ammonia molecules affect the intra-chain charge transfer process. The inter-chain resistance is higher than the intra-chain resistance. Thus, the ammonia sensing performance is highly attenuated by the influence of inter-chain resistance. Here, we report a facile method for the selective enhancement of the intra-chain charge transport process in a PAni film. The use of a good solvent such as toluene is demonstrated to increase the PAni molecular length, to reduce the inter-chain transitions, and to improve the ammonia sensing performance of the PAni film.
    No preview · Article · Jan 2016 · Electronic Materials Letters