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Electromagnetic Transition Strengths and New Insight into the Chirality in 106Ag
ZHENG Yun, ZHU Li-Hua, WU Xiao-Guang, HE Chuang-Ye, LI Guang-Sheng, HAO Xin, YU Bei-Bei, YAO Shun-He, ZHANG Biao, XU Chuan, WANG Jian-Guo, GU Long
Chin. Phys. Lett. 2014, 31 (06):
062101
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DOI: 10.1088/0256-307X/31/6/062101
Excited states in 106Ag are populated through the heavy-ion fusion evaporation reaction 100Mo(11B,5n)106Ag at a beam energy of 60 MeV. Lifetimes are measured for transitions of the two negative-parity rotational bands in the nucleus 106Ag. The reduced transition probabilities show a great difference between the two bands. The staggering of the B(M1) and B(M1)/B(E2) values with spin are not observed. The bands are identified to be built on two distinct quasiparticle configurations. These results are contrary to an earlier suggestion that the pair of bands in 106Ag are chiral doublet bands.
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First-Principle Study of H2 Adsorption on Mg3N2(110) Surface
CHEN Yu-Hong, ZHANG Bing-Wen, ZHANG Cai-Rong, ZHANG Mei-Ling, KANG Long, LUO Yong-Chun
Chin. Phys. Lett. 2014, 31 (06):
063101
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DOI: 10.1088/0256-307X/31/6/063101
The adsorption of H2 on two kinds of Mg3N2(110) crystal surface is studied by first principles. Adsorption sites, adsorption energy, and the electronic structure of the Mg3N2(110)/H2 systems are calculated separately. It is found that H2 is mainly adsorbed as chemical adsorption, on these sites the H2 molecules are dissociated and the H atoms tend to the top of two N, respectively, forming two NH, or the H atoms tend to the same N forming one NH2. There are also some physical adsorption sites. One of the bridge sites of Mg3N2(110) surface is more favorable than the other sites. On this site, H atoms tend to the top of two N, forming two NH. This process belongs to strong chemical adsorption. The interaction between H2 molecule and Mg3N2(110) surface is mainly due to the overlap-hybridization among H 1s, N 2s, and N 2p states, covalent bonds are formed between the N and H atoms.
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Above-Threshold Ionization of Xenon by Chirped Intense Laser Pulses
WANG Chuan-Liang, SUN Ren-Ping, CHEN Yong-Ju, GONG Cheng, LAI Xuan-Yang, KANG Hui-Peng, QUAN Wei, LIU Xiao-Jun
Chin. Phys. Lett. 2014, 31 (06):
063202
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DOI: 10.1088/0256-307X/31/6/063202
We experimentally investigate above-threshold ionization of xenon subject to chirped intense laser pulses. While for few-cycle laser pulses free of chirp, the Freeman resonance narrow peaks in the photoelectron spectra become strongly suppressed, they will re-emerge for laser pulses with a certain chirp. Moreover, the position of the resonant peaks exhibits a strong dependence on the direction of the chirp. The experimental features can be understood by a two-step ionization process; that is, a multi-photon excitation plus subsequent ionization process.
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Ultra-High Efficiency Magnetic Transport of 87Rb Atoms in a Single Chamber Bose–Einstein Condensation Apparatus
GAO Kui-Yi, LUO Xin-Yu, JIA Feng-Dong, YU Cheng-Hui, ZHANG Feng, YIN Ji-Ping, XU Lin, YOU Li, WANG Ru-Quan
Chin. Phys. Lett. 2014, 31 (06):
063701
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DOI: 10.1088/0256-307X/31/6/063701
We report the ultra-high efficiency transport of cold 87Rb atoms using a moving magnetic quadrupole potential generated by three overlapping pairs of fixed coils. The transfer efficiency is better than 97%, which is the highest ever reported to our knowledge. The temperature increase due to heating is less than 10 μK when the initial cloud temperature is 110 μK. Our setup is similar to the magnetic transferring belt design [ Phys. Rev. A 63 (2001) 031401(R)], although it is simpler because the push coil is not required. We use it to transport atoms away from a magneto-optical trap to very close to the wall of the glass cell, facilitating future experiments employing three-dimensional optical lattices, high resolution in-situ imaging, and magnetic Feshbach resonances.
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Facile Synthesis of Au Nanocube-CdS Core-Shell Nanocomposites with Enhanced Photocatalytic Activity
LIU Xiao-Li, LIANG Shan, LI Min, YU Xue-Feng, ZHOU Li, WANG Qu-Quan
Chin. Phys. Lett. 2014, 31 (06):
064203
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DOI: 10.1088/0256-307X/31/6/064203
Au nanocube-CdS core-shell nanocomposites are prepared by using a one-pot method in aqueous phase with cetyltrimethylammonium bromide as the surfactant. The extinction properties and photocatalytic activity of Au-CdS nanocomposites are investigated. Compared with the pure Au nanocubes, the Au-CdS nanocomposites exhibit enhanced extinction intensity. Compared with CdS nanoparticles, the Au-CdS nanocomposites exhibit improved photocatalytic activity. Furthermore, the photocatalytic efficiency is even better with the increase in the core size of the Au-CdS nanocomposites. Typically, the photocatalytic efficiency of the Au-CdS with 62 nm sized Au nanocubes is about two times higher than that of the pure CdS. It is believed that the Au-CdS nanocomposites may find potential applications in environmental fields, and this synthesis method can be extended to prepare a wide variety of functional composites with Au cores.
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Modeling of Fano Resonance in High-Contrast Resonant Grating Structures
HU Jin-Hua, HUANG Yong-Qing, REN Xiao-Min, DUAN Xiao-Feng, LI Ye-Hong, WANG Qi, ZHANG Xia, WANG Jun
Chin. Phys. Lett. 2014, 31 (06):
064205
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DOI: 10.1088/0256-307X/31/6/064205
A new model is presented for Fano resonance in resonant grating structure based on the temporal coupled mode theory. By using this model, the reflection spectrum can be reproduced with the information of eigenmode of the structure, which can be numerically calculated by the finite element method. Therefore, the eigenmode plays a key role in determining the profile of the line shape of the Fano resonance in the resonant grating structure. When the space of two grating modulations is decreased, the line shape experiences a significant change. Such a drastic change can be attributed to the increase of quality factor of the eigenmodes. Thus, our model not only provides a simple and intuitive understanding on the mechanism of Fano resonance, but it also offers a convenient way to engineer the line shape of the Fano resonance. The proposed model can be used in many applications, such as biosensors, optical filters, and optical switchers.
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Passively Q-Switched Tm,Ho:YVO4 Laser with Cr:ZnS Saturable Absorber at 2 μm
DU Yan-Qiu, YAO Bao-Quan, CUI Zheng, DUAN Xiao-Ming, DAI Tong-Yu, JU You-Lun, PAN Yu-Bai, CHEN Min, SHEN Zuo-Chun
Chin. Phys. Lett. 2014, 31 (06):
064209
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DOI: 10.1088/0256-307X/31/6/064209
A stable diode-pumped passively Q-switched Tm,Ho:YVO4 laser with Cr:ZnS saturable absorber is reported. The shortest pulse duration of ~500 ns with the central wavelength of 2041 nm is obtained at the pump power of 7.4 W, corresponding to the pulse energy of 3.5 μJ at repetition rate of 65 kHz.
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Structural and Physical Properties of AsxSe100?x Glasses
FANG Ming-Lei, XU Feng, WEI Wen-Hou, YANG Zhi-Yong
Chin. Phys. Lett. 2014, 31 (06):
066101
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DOI: 10.1088/0256-307X/31/6/066101
We prepare the samples of AsxSe100?x glasses with x=20, 31, 40 and 50, and measure the glass-transition temperatures Tg, the density and elastic, and optical properties of the glasses. The density, elastic constants and third optical nonlinearity coefficient are found to exhibit the maximal values for the As40Se60 composition. Analysis of x-ray photoelectron spectra of these AsxSe100?x glasses indicate that the chemically stoichiometric As40Se60 consists of perfect corner-sharing pyramidal AsSe3/2 units, while the others contain defect bonds such as As–As and Se–Se. The optical nonlinearity does not correlate with the concentration of Se, contrary to the report by Quemard et al for Ge–Se glasses.
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Transport Properties and the Entropy-Scaling Law for Liquid Tantalum and Molybdenum under High Pressure
CAO Qi-Long, HUANG Duo-Hui, YANG Jun-Sheng, WAN Ming-Jie, WANG Fan-Hou
Chin. Phys. Lett. 2014, 31 (06):
066202
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DOI: 10.1088/0256-307X/31/6/066202
Molecular dynamics simulations are applied to study the transport properties, including the self-diffusion coefficient and viscosity, of liquid tantalum and molybdenum under high pressure conditions. The temperature dependence of self-diffusion coefficient, viscosity and the pair correlation entropy under high pressure conditions are investigated. Our results show that the Arrhenius law well describes the temperature dependence of self-diffusion coefficients and viscosity under high pressure, and the diffusion activation energy decreases with increasing pressure, while the viscosity activation energy increases with increasing pressure. The temperature dependence of the pair correlation entropy is well described by 1/T scaling. Furthermore, we find that the entropy-scaling laws, proposed by Rosenfeld for self-diffusion coefficients and viscosity in simple liquids under ambient pressure, still hold well for liquid tantalum and molybdenum under high pressure conditions.
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Exothermic Supercooled Liquid–Liquid Transition in Amorphous Sulfur
ZHANG Dou-Dou, LIU Xiu-Ru, HONG Shi-Ming, LI Liang-Bin, CUI Kun-Peng, SHAO Chun-Guang, HE Zhu, XU Ji-An
Chin. Phys. Lett. 2014, 31 (06):
066401
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DOI: 10.1088/0256-307X/31/6/066401
Amorphous sulfur (a-S) is prepared by rapidly compressing molten sulfur to high pressure. From differential scanning calorimeter measurements, a large exothermic peak has been observed around 396 K. Online wide-angled x-ray scattering spectra indicate that no crystallization occurs in the temperature range 295–453 K, suggesting that the exothermal process corresponds to an amorphous-to-amorphous transition. The transition from amorphous sulfur to liquid sulfur is further verified by the direct observation of sulfur melt at the temperature of the associated transition. This is the first time of reporting that a-S transforms to liquid sulfur directly, which has avoided a crystallization process. What is more, the transition is an exothermic and a volume expansion process.
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A Novel Sandwich Needlelike Structure in Annealed P3HT:PCBM Blend Films
ZENG Xue-Song, SHI Tong-Fei, LI Ning, LI Xin-Hua, ZHAO Yu-Feng, WANG Wen-Bo, ZHOU Bu-Kang, DUAN Hua-Hua, WANG Yu-Qi
Chin. Phys. Lett. 2014, 31 (06):
067201
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DOI: 10.1088/0256-307X/31/6/067201
A unique needlelike sandwich structure is observed in the P3HT:PCBM blend films after annealing at 220°C. The real-time observation of a growing needle indicates that the needle exhibits 7 μm/min longitudinal growth rate and no lateral growth. Both confocal fluorescence and Raman microscopic mapping measurements reveal that these needles have a PCBM core sandwiched between P3HT edges. According to the eutectic nature of P3HT:PCBM nature, when annealing at high temperature (~220°C), the aggregation of PCBM results in recrystallization of P3HT in the PCBM-depleted regions. These results will give clearer understanding of the melting, diffusion, and recrystallization behavior of the organic eutectic system.
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Synthesis of Homogenous Bilayer Graphene on Industrial Cu Foil
LUO Wen-Gang, WANG Hua-Feng, CAI Kai-Ming, HAN Wen-Peng, TAN Ping-Heng, HU Ping-An, WANG Kai-You
Chin. Phys. Lett. 2014, 31 (06):
067202
.
DOI: 10.1088/0256-307X/31/6/067202
We synthesize the homogenous graphene films on cheap industrial Cu foils using low pressure chemical vapor deposition. The quality and the number of layers of graphene are characterized by Raman spectra. Through carefully tuning the growth parameters, we find that the growth temperature, hydrocarbon concentration and the growth time can substantially affect the growth of high-quality graphene. Both single and bilayer large size homogenous graphenes have been synthesized in optimized growth conditions. The growth of graphene on Cu surface is found to be self ceasing in the bilayer graphene process with the low solubility of carbon in Cu. Furthermore, we have optimized the transfer process, and clear graphene films almost free from impurity are successfully transferred onto Si/SiO2 substrates. The field effect transistors of bilayer graphene are fabricated, which demonstrates a maximum hole (electron) mobility of 4300 cm2V?1s?1 (1920 cm2V?1s?1) at room temperature.
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Single-ZnO-Nanobelt-Based Single-Electron Transistors
JI Xiao-Fan, XU Zheng, CAO Shuo, QIU Kang-Sheng, TANG Jing, ZHANG Xi-Tian, XU Xiu-Lai
Chin. Phys. Lett. 2014, 31 (06):
067303
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DOI: 10.1088/0256-307X/31/6/067303
We fabricate single electron transistors based on a single ZnO nanobelt using standard micro-fabrication techniques. The transport properties of the devices are characterized at room temperature and at low temperature (4.2 K). At room temperature, the source-drain current increases linearly as the bias voltage increases, indicating a good ohmic contact in the transistors. At 4.2 K, a Coulomb blockade regime is observed up to a bias voltage of a few millivolts. With scanning the back gate voltage, Coulomb oscillations can be clearly resolved with a period around 1 V. From the oscillations, the charging energy for the single electron transistor is calculated to be about 10 meV, which suggests that confined quantum dots exist with sizes around 35 nm in diameter. The irregular Coulomb diamonds are observed due to the multi-tunneling junctions between dots in the nanobelt.
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Weak Electron-Phonon Coupling and Unusual Electron Scattering of Topological Surface States in Sb(111) by Laser-Based Angle-Resolved Photoemission Spectroscopy
XIE Zhuo-Jin, HE Shao-Long, CHEN Chao-Yu, FENG Ya, YI He-Mian, LIANG Ai-Ji, ZHAO Lin, MOU Dai-Xiang, HE Jun-Feng, PENG Ying-Ying, LIU Xu, LIU Yan, LIU Guo-Dong, DONG Xiao-Li, YU Li, ZHANG Jun, ZHANG Shen-Jin, WANG Zhi-Min, ZHANG Feng-Feng, YANG Feng, PENG Qin-Jun, WANG Xiao-Yang, CHEN Chuang-Tian, XU Zu-Yan, ZHOU Xing-Jiang
Chin. Phys. Lett. 2014, 31 (06):
067305
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DOI: 10.1088/0256-307X/31/6/067305
High-resolution laser-based angle-resolved photoemission (ARPES) measurements are carried out on Sb(111) single crystal. Two kinds of Fermi surface sheets are observed, which are derived from the topological surface states: one small hexagonal electron-like Fermi pocket around Γ point and the other six elongated lobes of hole-like Fermi pockets around the electron pocket. Clear Rashba-type band splitting due to the strong spin-orbit coupling is observed to be anisotropic in the momentum space. Our super-high-resolution ARPES measurements reveal no obvious kink in the surface band dispersions, indicating a weak electron-phonon interaction in the surface states. In particular, the electron scattering rate for these topological surface states is nearly a constant over a large energy window near the Fermi level that is unusual in terms of the conventional picture.
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Electronic and Optic Properties of Cubic Spinel CdX2O4 (X=In, Ga, Al) through Modified Becke–Johnson Potential
A. Manzar, G. Murtaza, R. Khenata, Masood Yousaf, S. Muhammad, Hayatullah
Chin. Phys. Lett. 2014, 31 (06):
067401
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DOI: 10.1088/0256-307X/31/6/067401
A new potential approximation known as modified Becke–Johnson based on density functional theory is applied to compute the electronic band profile and optical response of CdIn2O4, CdGa2O4 and CdAl2O4 compounds. The direct band gap with common LDA, GGA and EV-GGA is drastically underestimated compared with modified Becke–Johnson approximation, whose results are significantly closer to the experimental findings. The optical properties like dielectric constant, refractive index, reflectivity, optical conductivity and absorption coefficient are also computed. A unique characteristic associated with cation replacement is studied; the replacement of cation In by Ga and Ga by Al significantly reduces the direct energy band gap in these compounds. This variation is of crucial importance for band gap dependent optical properties of these compounds, which is also proof for applications of these compounds in optoelectronic devices.
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Observation of Strong-Coupling Pairing with Weakened Fermi-Surface Nesting at Optimal Hole Doping in Ca0.33Na0.67Fe2As2
SHI Ying-Bo, HUANG Yao-Bo, WANG Xiao-Ping, SHI Xun, ROEKEGHEM A-Van, ZHANG Wei-Lu, XU Na, RICHARD Pierre, QIAN Tian, RIENKS Emile, THIRUPATHAIAH S, ZHAO Kan, JIN Chang-Qing, SHI Ming, DING Hong
Chin. Phys. Lett. 2014, 31 (06):
067403
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DOI: 10.1088/0256-307X/31/6/067403
We report an angle-resolved photoemission investigation of optimally doped Ca0.33Na0.67Fe2As2. The Fermi surface topology of this compound is similar to that of the well-studied Ba0.6K0.4Fe2As2 material, except for larger hole pockets resulting from a higher hole concentration per Fe atoms. We find that the quasi-nesting conditions are weakened in this compound compared to Ba0.6K0.4Fe2As2. Similar to Ba0.6K0.4Fe2As2, we observe nearly isotropic superconducting gaps with Fermi surface-dependent magnitudes for Ca0.33Na0.67Fe2As2. A small variation in the gap size along the momentum direction perpendicular to the surface is found for one of the Fermi surfaces. Our superconducting gap results on all Fermi surface sheets fit simultaneously very well to a global gap function derived from a strong coupling approach, which contains only 2 global parameters.
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Structure Dependence of Magnetic Properties for Annealed GaMnN Films Grown by MOCVD
JIANG Xian-Zhe, YANG Xue-Lin , JI Cheng, XING Hai-Ying, YANG Zhi-Jian, WANG Cun-Da, YU Tong-Jun, ZHANG Guo-Yi
Chin. Phys. Lett. 2014, 31 (06):
067501
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DOI: 10.1088/0256-307X/31/6/067501
GaMnN/GaN multilayers and conventional GaMnN single layers are grown by metal-organic chemical vapor deposition. Both kinds of samples show room-temperature ferromagnetism. After thermal annealing, the sample with GaMnN/GaN multilayer structure displays a larger coercivity and better thermal stability compared to the GaMnN single layer. The annealing effects on VGa related defects are observed from photoluminescence measurements. Moreover, a different magnetic behavior is also found in the annealed GaMnN films grown on different (n-type GaN and p-type GaN) templates. These kinds of structure-dependent magnetic behaviors indicate that defects or carriers transformation introduced during annealing may have important effects on the electronic structure of Mn ions and on the ferromagnetism. Our work may be helpful for further understanding the origin of ferromagnetism in GaN-based diluted magnetic semiconductors.
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Charge Loss Characteristics of Different Al Contents in a HfAlO Trapping Layer Investigated by Variable Temperature Kelvin Probe Force Microscopy
ZHANG Dong, HUO Zong-Liang, JIN Lei, HAN Yu-Long, CHU Yu-Qiong, CHEN Guo-Xing, LIU Ming, YANG Bao-He
Chin. Phys. Lett. 2014, 31 (06):
067701
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DOI: 10.1088/0256-307X/31/6/067701
Kelvin probe force microscopy (KFM) technology is applied to investigate the charge storage and loss characteristics of the HfAlO charge trapping layer with various Al contents. The experimental results demonstrate that with the increase of Al contents in the HfAlO trapping layer, trap density significantly increases. Improvement of data retention characteristic is also observed. Comparing the vertical charge loss and lateral charge spreading of the HfAlO trapping layers, the former plays a major role in the charge loss mechanism. Variable temperature KFM measurement results show that the extracted effective electron trap energy level increases with increasing Al contents in HfAlO trapping layer, which is in accordance with the charge loss characteristics.
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Low Frequency Ultra-Thin Compact Metamaterial Absorber Comprising Split-Ring Resonators
LIN Bao-Qin, DA Xin-Yu, ZHAO Shang-Hong, MENG Wen, LI Fan, ZHENG Qiu-Rong, WANG Bu-Hong
Chin. Phys. Lett. 2014, 31 (06):
067801
.
DOI: 10.1088/0256-307X/31/6/067801
We present a design of a low frequency ultra-thin compact and polarization-insensitive metamaterial absorber (MA). The designed MA is a two-layer structure, a periodic array of novel split-ring resonators (SRRs), which are constructed in an FR4 dielectric layer, and another ultra-thin grounded sheet is attached to the bottom. Numerical simulated results show that the proposed MA can realize effective absorption at the frequency 281.9 MHz, and its overall thickness is just only 0.29% of the resonant wavelength, the unit space is only 2.57%, and the absorbance is kept well for a wide range of incident angles for different polarizations. In addition, the proposed MA is changed into a more compact one when the inter-digital structures are introduced in the SRRs. One convenient experiment is carried out in a rectangular waveguide simulator.
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Near-Infrared Properties of Hybridized Plasmonic Rectangular Split Nanorings
LIAO Zhong-Wei, HUANG Ying-Zhou, WANG Xiao-Yong, CHAU Irene Yeung-Yeung, WANG Shu-Xia, WEN Wei-Jia
Chin. Phys. Lett. 2014, 31 (06):
067803
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DOI: 10.1088/0256-307X/31/6/067803
The near-infrared properties of gold rectangular split nanorings (RSNs) are investigated by simulation using the finite element method. In the results, the distribution and enhancement of electromagnetic (EM) fields are confirmed by the distribution of charge and current density. The spectrum variation with split distance of RSNs in absorption is in accordance with the hybridization theory. The influence of split distance and light wavelength on the enhancement of EM field is also studied for devices that make use of surface plasmon resonance in near-infrared, such as in optical trapping, biomedicine, and solar energy. Additionally, the spectra in mediums with various refractive indices suggest the potential application of the hybridized plasmonic RSNs as an ultra-sensitive sensor in the near-infrared region.
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Developments of High-Efficiency Flexible Cu(In,Ga)Se2 Thin Film Solar Cells on a Polyimide Sheet by Sodium Incorporation
ZHANG Li, LIU Fang-Fang, LI Feng-Yan, HE Qing, LI Chang-Jian, LI Bao-Zhang, ZHU Hong-Bing
Chin. Phys. Lett. 2014, 31 (06):
068402
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DOI: 10.1088/0256-307X/31/6/068402
We present the fabrication of flexible Cu(In,Ga)Se2 (CIGS) solar cells on a polyimide (PI) sheet with and without Na incorporation. A sodium element is incorporated into the CIGS absorber by using a NaF precursor after Mo back contact deposition. X-ray diffraction patterns show that the (112) preferred orientation of the as-grown CIGS films is decreased by Na incorporation. The secondary phase of (Inx,Ga1?x)2Se3 is observed for the CIGS films with Na. There is no significant difference in the grain size with and without Na incorporation from surface and cross-sectional SEM images. Additionally, the increase of carrier concentration and decrease of resistivity of CIGS absorber are induced by Na doping. Finally, the flexible CIGS solar cells on PI sheets with efficiency close to 11%, containing Na, are achieved. The improvement of cell efficiency can be attributed to the modified electrical properties of the CIGS film by Na incorporation.
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Properties of Heat Generation in a Double Quantum Dot
ZHOU Li-Ling, LI Yong-Jun, HU Hua
Chin. Phys. Lett. 2014, 31 (06):
068501
.
DOI: 10.1088/0256-307X/31/6/068501
We investigate the electronic-current-induced heat generation in a double quantum dot connected by two normal leads. The dots are coupled in series with a coupling strength td. It is found that, at zero temperature and weak dot-lead coupling, td affects the heating and current heavily. In particular, the effects on the heat generation and on the current are quite different. For example, at a heating valley the current can exhibit a deep valley, a plateau, or a high peak depending on td. As a result, we can find an ideal working condition, large current while small heating, for the double dots system by tuning the interdot coupling strength.
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High-Voltage AlGaN/GaN-Based Lateral Schottky Barrier Diodes
KANG He, WANG Quan, XIAO Hong-Ling, WANG Cui-Mei, JIANG Li-Juan, FENG Chun, CHEN Hong, YIN Hai-Bo, WANG Xiao-Liang, WANG Zhan-Guo, HOU Xun
Chin. Phys. Lett. 2014, 31 (06):
068502
.
DOI: 10.1088/0256-307X/31/6/068502
Lateral Schottky barrier diodes (SBDs) on AlGaN/GaN heterojunctions are fabricated and studied. The characteristics of the fabricated SBDs with different Schottky contact diameters and different Schottky-Ohmic contact spacings are investigated. The breakdown voltage can be increased by either increasing the Schottky-Ohmic contact spacing or increasing the Schottky contact diameter. However, the specific on-resistance is increased at the same time. A high breakdown voltage of 1400 V and low reverse leakage current below 20 nA are achieved by the device with a Schottky contact diameter of 100 μm and a contact spacing of 40 μm, yielding a high VBR2/RON,sp value of 194 MW?cm?2.
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62 articles
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