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Synthesis of the CuInSe_2 thin film for solar cells using the electrodeposition technique and Taguchi method

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International Journal of Minerals,Metallurgy and Materials 2009年第1期16卷 101-107页

作者： wei-long liu Shu-huei Hsieh Wen-jauh Chen Pei-i wei Jing-herng Lee Department of Materials Science and Engineering Huwei Institute of Technology Yunlin China Taipei Graduate Institute of Materials Science Yunlin University of Science and Technology Yunlin China Taipei

The Taguchi method was used to obtain the optimum electrodeposition parameters for the synthesis of the CuInSe2 thin film for solar cells. The parameters consist of annealing temperature, current density, CuCl2 concentration, FeCl3 concentration, H2SeO3 concentration, TEA amount, pH value, and deposition time. The experiments were carried out according to an L18（2^13^7） table An X-ray diffractometer （XRD） and a scanning electron microscope （SEM） were respectively used to analyze the phases and observe the microstructure and the grain size of the CuInSe2 film before and after annealing treatment. The results showed that the CuInSe2 phase was deposited with a preferred plane （112） parallel to the substrate surface. The optimum parameters are as follows： current density, 7 mA/cm^2; CuCl2 concentration, 10 mM; FeCl3 concentration, 50 mM; H2SeO3 concentration, 15 mM; TEA amount, 0 mL; pH value, 1.65; deposition time, 10 min; and annealing temperature, 500℃.

关键词： CuInSe2 (CIS) thin film solar cell electrodeposition Taguchi method

Effect of Fe metal on the growth of silicon oxide nanowires

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International Journal of Minerals,Metallurgy and Materials 2009年第3期16卷 317-321页

作者： wei-long liu Shu-huei Hsieh Ching He Chen Wen-jauh Chen Department of Materials Science and Engineering Formosa University Yunlin 632 China Taipei Department of Materials Engineering Pingtung University of Science and Technology Pingtung 912 China Taipei Graduate School of Materials Science Yunlin University of Science and Technology Yunlin 632 China Taipei

Silicon oxide （SiOx） nanowires are generally grown on Si substrate under the catalysis of Au in N2 atmosphere at elevated temperatures. Because the price of Au metal is quite high, Fe metal is then used to replace a part of Au for catalyzing the growth of SiOx nanowires. The results show that the Fe film can be used as the diffusion barrier of Au. SiOx nanowires are grown on Au/Fe/Si substrate at 1030℃. Under the catalysis of Fe/Au, the efficiency for the growth of SiOx nanowires is promoted.

关键词： silicon oxide nanowires Au catalyst Fe substitution Si substrate

Tribological properties of electroless Ni-P-SiC composite coatings in rolling/sliding contact under boundary lubrication

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Journal of University of Science and Technology Beijing 2007年第2期14卷 167-172页

作者： wei-long liu Shu-Hue Hsieh Shen-Jenn Hwang Ting-Kan Tsai Wen-Jauh Chen Department of Materials Science and Engineering Formosa University Huwei China Taipei Department of Mechanical Design Engineering Formosa University Huwei China Taipei Department of Materials Engineering Pingtung University of Science and Technology Pingtung China Taipei

Ni-P-SiC composite coatings were prepared under a given bath composition and operation parameters of electroless plating. The tribological properties of the Ni-P-SiC composite coatings after annealing at 400℃ for 1 h were tested in rolling/sliding contact under boundary lubrication condition using a two-roller tribometer. The measurement contained friction coefficient, contact surface temperature, contact electrical resistance, and wear rate of the Ni-P-SiC composite coatings under various slide to roll ratios, loads, and rolling speeds. For the simultaneous examination of the effect of the chosen parameters on the tribological properties of the Ni-P-SiC composite coatings, an orthogonal regression experimental design method was used.

关键词： Ni-P-SiC composite coating rolling-sliding friction wear two-roller test

Interface structure between epitaxial NiSi_2 and Si

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Journal of University of Science and Technology Beijing 2006年第6期13卷 558-563页

作者： wei-long liu Wen-Jauh Chen Ting-Kan Tsai Hsun-Heng Tsai Shu-Huei Hsieh Department of Materials Engineering Formosa University Yunlin China Taipei Graduate Institute of Materials Engineering Pingtung University of Science and Technology 1 Pingtung China Taipei Department of Biosystems Engineering Pingtung University of Science and Technology 1 Pingtung China Taipei

The interface structure between the Si and NiSi2 epitaxially grown on the （112） Si substrate was studied using high resolution transmission electron microscopy and computer image simulation. The results showed that the interface between Si and NiSi2 epitaxially grown on the （ 112 ） Si substrate has six different types： type A NiSi2 （111 ）/（ 111 ） Si, type A NiSi2 （001）/（001） Si, type B NiSi2 （ 111 ）/（ 111） Si, type B NiSi2 （ 112 ）/（ 1 12 ） Si, type B NiSi2 （ 271 ）/（001） Si, and type B NiSi2 （ 114 ）/（ 110 ） Si. And there are one or more different atomic structures for one type of interface.

关键词： nickel silicide interface high resolution image simulation atomic structure

Growth behavior of electroless copper on silicon substrate

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Journal of University of Science and Technology Beijing 2007年第1期14卷 67-71页

作者： Shin-Shyan Wu wei-long liu Ting-Kan Tsai Shu-Huei Hsieh Wen-Jauh Chen Institute of Electro-Optical and Materials Science Formosa University Yunlin China Taipei Department of Materials Science and Engineering Formosa University Yunlin China Taipei Graduate Institute of Materials Engineering Pingtung University of Science and Technology Pingtung China Taipei

The growth behavior containing deposit morphology, growth rate, activation energy, and growth mechanism of copper on silicon substrate, especially at the initial stage, in the electroless plating process was studied. Copper was deposited on the surface of the silicon substrate in an electloless plating bath containing formalin （CH2O 37vol%） as a reducing agent at a pH value of 12.5 and a temperature of 50-75℃. The copper deposit was characterized using a field emission scanning electron microscope and transmission electron microscope. The results showed that after the activation process, nanoscale Pd particles were distributed evenly on the surface of the silicon; in the deposition process, copper first nucleated at locations not only near the Pd particles but also between the Pd particles; the growth rate of electroless Cu ranged from 0.517 nm/s at 50℃ to 1.929 nm/s at 75℃. The activation energy of electroless Cu on Si was 52.97 kJ/mol.

关键词： electroless copper silicon substrate activation energy growth mechanism

Solvent Effects on Spectral Property and Dipole Moment of the Lowest Excited State of Coumarin 343 Dye

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Chinese Journal of Chemical Physics 2012年第5期25卷 577-584,I0004页

作者： Li-lin Jiang wei-long liu Yun-fei Song Xing He Yang Wang Hong-lin Wu Yan-qiang Yang Center for the Condensed Matter Science and Technology Department of PhysicsHarbin Instituteof TechnologyHarbin 150001China Department of Physics and Electronics Information Engineering Hezhou UniversityHezhou 542800China

Steady-state absorption and fluorescence spectra, and time-resolved fluorescence spectra of coumarin 343 （C343） were measured in different solvents. The effect of the solvent on the spectral properties and dipole moment of the lowest excited state of C343 were investigated. It was found that the absorption and fluorescence spectra red-shifted slightly and strongly with increasing solvent polarity, respectively, because the charge distribution of the excited state leaded to the increasing difference between the absorption and fluorescence spectra with increasing solvent polarity. The dipole moment of the lowest excited state of C343 was determined from solvatochromic measurements and the quantum chemical calculation, and the results obtained from these two methods were fully consistent. Investigations of the time-resolved fluorescence of C343 in different solvents indicated that the fluorescence lifetimes increased nearly linearly with 4.45 ns in water. This can be ascribed between C343 and hydrogen donating increasing solvent polarity from 3.09 ns in toluene to to the intermolecular hydrogen bonding interactions solvents

关键词： Time-resolved fluorescence Dipole moment Solvent polarity function Quan-tum chemical calculation Intermolecular hydrogen bonding interaction

Copper-Catalyzed Enantioconvergent Radical C(sp^(3))−N Cross- Coupling to Access Chiral α-Amino-β-lactams

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Precision Chemistry 2023年第10期1卷 576-582页

作者： Jing-Jing Zheng wei-long liu Qiang-Shuai Gu Zhong-Liang Li Ji-Jun Chen Xin-Yuan liu Shenzhen Key Laboratory of Cross-Coupling Reactions Southern University of Science and TechnologyShenzhen 518055China Shenzhen Grubbs Institute and Department of Chemistry Southern University of Science and TechnologyShenzhen 518055China Academy for Advanced Interdisciplinary Studies and Department of Chemistry Southern University of Science and TechnologyShenzhen 518055China

A copper-catalyzed enantioconvergent radical C-(sp^(3))-N cross-coupling of racemic tertiaryα-bromo-β-lactams with aromatic amines is developed under mild thermal reaction *** use of a sterically demanded oxazoline-derived sulfonamide N,N,N-ligand is crucial for the reaction initiation and effective enantio-discrimination of the azetidinone-derived cyclic alkyl *** strategy provides an attractive approach to access chiralα-amino-β-lactams,an important structural motif in many biologically active *** mechanistic studies support the formation of azetidinone-derived alkyl radicals from the L*Cu(I)-amido complex andα-bromo-β-lactams.

关键词： copper asymmetric radical reactions cross-coupling aromatic amines chiralα-amino-β-lactams

Expression of HSV-1 ICP0 Antigen Peptide in Prokaryotic Cells and Preparation of Specific Antibody

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中国病毒学 2007年第4期22卷 280-286页

作者： wei-zhong LI wei CUN long-ding liu Yan-chun CHE Jie LUO Li-chun WANG Cheng-hong DONG Qian YANG Qi-han LI Institute of Medical Biology Chinese Academy of Medical Sciences and Peking Union Medical College Kunming Yunnan Province 650118 China

As an immediate-early protein of herpes simplex virus, infected-cell polypeptide 0 (ICP0) exhibits complicated interactions with host cells, and its regulatory function on gene expression is of great importance. Since the ICP0 encoding sequence contains many rare codons which are absent in ***, and ICP0 is highly unstable in prokaryotic cells, expression of entire ICP0 in prokaryotic cells has never been reported. In order to further investigate the function of ICP0, a recombinant plasmid was constructed by subcloning a cDNA fragment encoding an amino-terminal of 105 residues of the ICP0 protein into pGEX-5x-1 vector. The resulting GST-105 fusion antigen peptide was expressed with high efficiency in ***. Antibodies prepared after the immunization of mice with purified fusion protein can recognize not only the denatured ICP0 protein, but also the native ICP0 protein with normal biological conformation.

关键词： ICPO 抗原肽原核细胞抗体单纯疱疹病毒基因表达

Dynamically self-adjustable liquid-liquid and self-adaptive softcontact solid-solid triboelectric nanogenerator for wave energy harvesting

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Nano Research 2025年第1期18卷 404-414页

作者： Yong long Bingqi Zhao Jianan Niu Yuxiu liu wei Sha Jiangwen Wang Zhong Lin Wang weiguo Hu Guangzhou Institute of Blue Energy Knowledge CityHuangpu DistrictGuangzhou 510555China Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of SciencesBeijing 101400China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049China

Water wave energy exhibits great potential toalleviate the global energy crisis. However, harvesting andutilizing wave energy are challenging due to its irregularity,randomness, and low frequency. Triboelectric nanogenerators(TENGs) have gained significant attention for harvesting waveenergy with high efficiency. This study presents a novelellipsoidal, pendulum-like TENG integrating both liquid-liquid(L-L) and solid-solid (S-S) triboelectricity (LS-TENG). Thisinnovative design enables continuous wave energy harvestingand self-powered marine environment monitoring under variousconditions, including temperature, humidity, and light intensity. The binary immiscible liquids within the LS-TENG’s innersoft balloon create dynamic, and self-adjustable L-L contact interfaces, significantly increasing the L-L contact area andenhancing L-L contact electrification (CE). The unique self-adaptive, soft S-S contact increases the S-S contact areacompared to traditional hard point contact, better adapting to the irregular movements of waves and promoting efficient S-SCE. The LS-TENG achieves highly efficient wave energy harvesting by coupling L-L and S-S CE. Furthermore, the uniquesoft contact design protects the S-S interfaces from mechanical wear and damage during long-term work. The LS-TENG’snovel structure provides an innovative and effective way for water wave energy harvesting.

关键词： self-adaptive soft-contact solid-solid liquid-liquid self-adjustable triboelectric nanogenerator