检索结果-南通市图书馆

High-Throughput Multi-Plume pulsed-laser deposition for Materials Exploration and Optimization

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Engineering 2015年第3期1卷 367-371页

作者： Samuel S.Mao Xiaojun Zhang Department of Mechanical Engineering University of California at Berkeley

A high-throughput multi-plume pulsed-laser deposition （MPPLD） system has been demonstrated and compared to previous techniques. Whereas most combinatorial pulsedlaser deposition （PLD） systems have focused on achieving thickness uniformity using sequential multilayer deposition and masking followed by post-deposition annealing, MPPLD directly deposits a compositionally varied library of compounds using the directionality of PLD plumes and the resulting spatial variations of deposition rate. This system is more suitable for high-throughput compound thin-film fabrication.

关键词： pulsed-laser deposition high-throughput

Substrate Dependence of Properties of Sputtered ITO Films

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 2005年第5期22卷 1228-1231页

作者：高美珍史慧刚 JobR. 李发伸 FahrnerW.R. KeyLaboratoryforMagnetismandMagneticMaterialsoftheMinistryofEducation LanzhouUniversityLanzhou730000 DepartmentofElectronicDevices FacultyofElectricalEngineeringUniversityofHagenHaldenerStr.182D-58084HagenGermany

High-quality indium-tin-oxide (ITO) films are deposited on p-type Czochralskisilicon and 7059 Corning glass by direct-current magnetron sputtering at various temperatures. Thestructural, electrical and optical properties of the ITO films are investigated as functions of thesubstrate temperature. A comparison between the characteristics of the ITO films on silicon andCorning glass is presented. The results show that for the ITO film on silicon, the nucleation beginsfrom room temperature; the resistivity reaches a maximum value at 75 degrees C; the reffectivityincreases with increasing temperature; when temperature is above 125 degrees C, the ITO grows in athree-dimensional manner and forms a granular structure. However, for the ITO film on glass, it isstill in an amorphous state at 75 degrees C. Moreover, both the resistivity and the reflectivitydecrease with increasing temperature. Above 125 degrees C, the ITO grows in a two-dimensional mannerand forms a domain structure.

关键词： INDIUM-TIN-OXIDE IONIZED IMPURITY SCATTERING pulsed-laser deposition STRUCTURAL-PROPERTIES OPTICAL-PROPERTIES TRANSPARENT GLASS

Structural, Morphology and Optical Properties of Epitaxial ZnO Films Grown on Al2O3 by MOCVD

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics Letters 2006年第4期23卷 1023-1025页

作者：周生强吴名枋姚淑德王立江风益 School of Physics Peking University Beijing 100871 Engineering Research Center for Luminescent Materials and Devices (Ministry of Education) Nanchang University Nanchang 330047

Epitaxial ZnO films are grown on Al2O3 （0001） by the MOCVD method. These films are high quality wurtzite crystals with （0001） orientation. Big hexagonal crystallites （diameter from several decades to 100 μm） are found on the surface. Inside these crystallites, a stronger luminescence is observed compared with the plain area. Transmission electronic microscopy reveals that the film is thicker inside the hexagonal crystallites than the plain area, and some crystallites are not connected with each other and are slightly rotated with respect to their neighbours.

关键词： CHEMICAL-VAPOR-deposition pulsed-laser deposition THIN-FILMS ROOM-TEMPERATURE SAPPHIRE DEVICES LAYERS

Fabrication and Characterization of Nanocrystalline VO2 Thin Films

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics Letters 2005年第7期22卷 1746-1748页

作者：王宏臣易新建赖建军李毅 DepartmentofOptoelectronicEngineer HuazhongUniversityofScienceandTechnologyWuhan430074//TheNationalLaboratoryforOptoelectronics1037LoyuRoadWuhan430074 DepartmentofOptoelectronicEngineer HuazhongUniversityofScienceandTechnologyWuhan430074

Nanocrystalline VO2 films with phase transition temperature 34 degrees C havebeen fabricated on Si3N4-film-coated silicon and quartz substrates by argon-annealing films ofmetastable VO2(B). The original VO2(B) films are obtained by ion beam sputtering in an argon-oxygenatmosphere at 200 degrees C. The nanocrystalline VO2 films exhibit strong changes in electrical andoptical properties when a phase transition is completed. The phase transition temperature in theas-fabricated samples is about 34 degrees C, which is smaller in comparison with 68 degrees C in thesinglecrystalline VO2 material. A lower phase transition temperature is favorable for deviceapplications such as smart window coating and low power consumption optical switching.

关键词： PHASE-TRANSITION PROPERTIES pulsed-laser deposition VANADIUM DIOXIDE SAPPHIRE

Effects of External Electric Field on Ferroelectric Superlattice with Two Alternating Layers

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics Letters 2005年第1期22卷 219-220页

作者：姜伟罗永祥 CollegeofSciences ShenyangUniversityofTechnologyShenyang110023 DepartmentofAppliedPhysics TheHongKongPolytechnicUniversityHongKong

The effects of the external electric held on the ferroelectric superlatticewith two alternating layers have been studied using the transverse Ising model based on theeffective-field theory with the differential technique. The hysteresis loops and susceptibility ofthe system have been given. The stronger the external electric field, the smaller thesusceptibility, reflecting that the polarization is weaker.

关键词： pulsed-laser deposition DIELECTRIC-PROPERTIES THIN-FILMS BATIO3/SRTIO3

Self-assembly In2Se3/SnSe2 heterostructure array with suppressed dark current and enhanced photosensitivity for weak signal

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China Materials 2020年第8期63卷 1560-1569页

作者： Zhaoqiang Zheng Peifeng Chen Jianting Lu Jiandong Yao Yu Zhao Menglong Zhang Mingming Hao Jingbo Li School of Materials and Energy Guangdong University of TechnologyGuangzhou 510006China Department of Electronic Engineering the Chinese University of Hong KongHong KongChina State Key Laboratory of Optoelectronic Materials and Technologies Nanotechnology Research CenterSchool of Materials Science&EngineeringSun Yat-sen UniversityGuangzhou 510275China Institute of Semiconductors South China Normal UniversityGuangzhou 510631China State Key Laboratory for Superlattices and Microstructures Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China

Functional van der Waals(vdWs)heterostructures based on layered materials have shown tremendous potential in next-generation optoelectronic *** date,numerous vdWs heterostructures have been investigated based on stacking or epitaxial growth *** the complicated synthesis process greatly limits the large-scale integration of the heterostructure device array,which is essential for practical ***,a planar photodetector array with an out-of-plane vertical In2Se3/SnSe2heterostructure as the photosensitive channel was self-assembled through a pulsed laser deposition(PLD)*** vertical built-in field was exploited to suppress the dark current and separate the photogenerated *** realized devices possess an ultralow dark current of 6.3 p A,combined with a high detectivity of 8.8×1011Jones and a high signal-to-noise ratio(SNR)beyond 3×*** performance metrics not only are one order of magnitude superior to pure In2Se3device,but also demonstrate the unique advantage of detecting weak *** addition,this heterostructure photodetector array can further be constructed on flexible polyimide(PI)*** flexible devices also demonstrate effective light detection capability and the photoresponse remains unchanged even after 200 cycles of *** findings pave a way toward the development of next-generation large area and high integration optoelectronic technologies.

关键词： 2D material photodetector pulsed-laser deposition van der Waals heterostructure

Effect of Ba/Sr ratio on the nonlinear optical properties of Ba_(1-x)Sr_(x)TiO_(3)(x = 0.1–0.9) thin films

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Chinese Optics Letters 2023年第4期21卷 74-79页

作者：王得鹏牛瑞峰崔立棋王伟田 School of Physics and Electronic Information Yantai UniversityShandong 264005China

Perovskite-structured barium strontium titanate[Ba_(1-x)Sr_(x)Ti O_(3),x=0.1–0.9] films have been epitaxially fabricated by using a pulsed-laser deposition *** third-order nonlinear optical properties were studied through a z-scan method,allowing the resolution of the nonlinear refractive and absorptive contributions to the *** all the samples show almost the same value of nonlinear absorption coefficient,the extracted nonlinear refractive index of the sample of x=0.3 is apparently larger than that of other *** of the nonlinear optical properties on the Ba/Sr ratio is discussed in terms of the crystal phase transformation and metal-oxygen bond length of the selected materials.

关键词： nonlinear optical properties thin films phase transformation pulsed-laser deposition