Characterization of CdTe passivation layers grown by evaporation with thermal treatments

2011 ◽  
Author(s):  
Jing-jie Xu ◽  
Hai-bin Li ◽  
Xing-guo Chen ◽  
Yan-feng Wei ◽  
Chun Lin ◽  
...  
Keyword(s):  
Thermal Treatments ◽  
Passivation Layers ◽  
Cdte Passivation

TEM characterization of WSix films

1994 ◽  
Vol 52 ◽  
pp. 848-849
Author(s):  
V. C. Kannan ◽  
S. M. Merchant ◽  
R. B. Irwin ◽  
A. K. Nanda ◽  
M. Sundahl ◽  
...  
Keyword(s):  
Integrated Circuits ◽  
Vapor Deposition ◽  
High Purity ◽  
Physical Vapor Deposition ◽  
Thermal Treatments ◽  
Rapid Thermal Anneal ◽  
Tungsten Silicide ◽  
Tem Characterization ◽  
Metal Silicides

Metal silicides such as WSi2, MoSi2, TiSi2, TaSi2 and CoSi2 have received wide attention in recent years for semiconductor applications in integrated circuits. In this study, we describe the microstructures of WSix films deposited on SiO2 (oxide) and polysilicon (poly) surfaces on Si wafers afterdeposition and rapid thermal anneal (RTA) at several temperatures. The stoichiometry of WSix films was confirmed by Rutherford Backscattering Spectroscopy (RBS). A correlation between the observed microstructure and measured sheet resistance of the films was also obtained.WSix films were deposited by physical vapor deposition (PVD) using magnetron sputteringin a Varian 3180. A high purity tungsten silicide target with a Si:W ratio of 2.85 was used. Films deposited on oxide or poly substrates gave rise to a Si:W ratio of 2.65 as observed by RBS. To simulatethe thermal treatments of subsequent processing procedures, wafers with tungsten silicide films were subjected to RTA (AG Associates Heatpulse 4108) in a N2 ambient for 60 seconds at temperatures ranging from 700° to 1000°C.

Infrared Spectroscopy Characterization of Marine Shells

2001 ◽  
Vol 711 ◽  
Author(s):  
Octavio Gomez-Martinez ◽  
Daniel H. Aguilar ◽  
Patricia Quintana ◽  
Juan J. Alvarado-Gil ◽  
Dalila Aldana ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Crassostrea Virginica ◽  
Thermal Treatments ◽  
Vibration Modes ◽  
Lattice Vibrations ◽  
Vibration Frequencies ◽  
Mussel Shells ◽  
Carbonate Lattice

ABSTRACTFourier Transform infrared spectroscopy has been employed to study the shells of two kind of mollusks, American oysters (Crassostrea virginica) and mussels (Ischadium recurvum). It is shown that it is possible to distinguish the different calcium carbonate lattice vibrations in each case, mussel shells present aragonite vibration frequencies, and the oyster shells present those corresponding to calcite. The superposition, shift and broadening of the infrared bands are discussed. Changes in the vibration modes due to successive thermal treatments are also reported.

SUPERCONDUCTING PROPERTIES OF BSCCO (2223) ULTRATHIN FILMS

2002 ◽  
Vol 09 (05n06) ◽  
pp. 1757-1760
Author(s):  
L. NAVARRETE ◽  
A. MARIÑO ◽  
H. SÁNCHEZ
Keyword(s):  
Electrical Properties ◽  
Magnetron Sputtering ◽  
Structural Characterization ◽  
Ultrathin Films ◽  
Rf Magnetron Sputtering ◽  
Ex Situ ◽  
Thermal Treatments ◽  
Superconducting Properties

Ultrathin films of (Bi–Pb)–Sr–Ca–Cu–O (2223) were produced by ex situ RF magnetron sputtering on MgO (100) substrates. Films with different thermal treatments and thickness varying between 30 nm and 300 nm were obtained and studied systematically. A structural characterization of these samples was carried out and correlated with their electrical properties and thickness.

scholarly journals Nanosize CaCu3Ti4O12 Green Synthesis and Characterization of a Precursor Oxalate Obtained from Averrhoa carambola Fruit Juice and Its Thermal Decomposition to the Perovskite

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Ekane Peter Etape ◽  
Josepha Foba-Tendo ◽  
Beckley Victorine Namondo ◽  
Divine Mbom Yufanyi ◽  
Hypolite Mathias Kamta Tedjieukeng ◽  
...  
Keyword(s):  
Fruit Juice ◽  
Thermal Treatments ◽  
Decomposition Products ◽  
Multiple Dimensions ◽  
Different Temperatures ◽  
Synthesis Routes ◽  
High Degree ◽  
Very High ◽  
Oxalic Acids

Improving on the very high temperatures used in solid-state synthesis routes to prepare CCTO ignited the idea of using oxalate routes which make use of organic solvents in the synthesis of CCTOX as oxalate intermediates to the decomposition product, CCTO. The use of commercial oxalic acids and oxalate has not only recorded a solubility problem which reflects on the size, shape, homogeneity, and morphology of the final product but also has an environmental impact originating from the solvents used. Both the composition and morphology of these inhomogeneities play a role in the behaviour of the final product, pointing out the need to assess the dependence of size, shape, homogeneity, and morphology and the material performance on the sample synthesis history. In this study, nanosized particles of calcium copper titanium oxide, CaCu3Ti4O12 (CCTO), were successfully synthesized by pyrolysis of the corresponding heterometal oxalate precursors obtained via coprecipitation using the edible carambola fruit juice as a precipitating agent and investigated in detail. The precursors were characterized, and the results revealed the formation of a single molecular precursor represented by the formula CaCu3(TiO)4(C2O4)8·9H2O (CCTOX). The decomposition products, obtained via calcination in air, were subsequently subjected to thermal treatments at different temperatures for 4 hours. The morphology and microstructure were characterized, and analysis showed the formation of a single phase, CaCu3Ti4O12 (CCTO) with CuO and CaTiO3 as impurity. It was observed from microscopy that the samples obtained from sintering at 600°C for four hours had discrete particles with regular morphology, limited size distribution, high degree of homogeneity, and multiple dimensions ranging between 10 and 35 nm and showed some degree of ellipticity in shape. Increasing the sintering temperature from 600°C to 700°C and 800°C increased the grain growth in the ceramic as well as the densification. The method makes advantage of the fact that oxalate precursors decomposed at relatively lower temperatures and the fact that the oxalate in the juice is in the solution which downplays both the solubility and environmental pollution problems since no additional solvents are used.

ESR characterization of V4+ as a counter-ion of the 12-molybdophosphate. Influence of thermal treatments

1996 ◽  
Vol 110 (2) ◽  
pp. 65-76 ◽  
Author(s):  
R. Bayer ◽  
C. Marchal ◽  
F.X. Liu ◽  
A. Tézé ◽  
G. Hervé
Keyword(s):  
Thermal Treatments ◽  
Counter Ion

Co-Containing LDHs Synthesized by the Microwave-Hydrothermal Method

2006 ◽  
Vol 514-516 ◽  
pp. 1241-1245
Author(s):  
Patricia Benito ◽  
Maria Herrero ◽  
Francisco Martin Labajos ◽  
Vicente Rives
Keyword(s):  
Oxidation State ◽  
Layered Double Hydroxides ◽  
Treatment Time ◽  
Synthesis And Characterization ◽  
Thermal Treatments ◽  
Microwave Hydrothermal ◽  
Microwave Hydrothermal Method ◽  
Divalent Cobalt ◽  
Double Hydroxides

The synthesis and characterization of Co,Al Layered Double Hydroxides (LDHs) containing carbonate is reported. The solids have been submitted to several thermal treatments, hydrothermal and microwave-hydrothermal, modifying both the treatment time and temperature, with the main aim of studying their influence on the crystallinity of the solids and on the stabilization of divalent cobalt oxidation state. The results show that whichever the temperature and time used the only phase detected was the hydrotalcite, and that the cobalt cations keep the divalent oxidation state.

Blue And Yellow Light Emitting Phosphors For Thin Film Electroluminescent Displays

1994 ◽  
Vol 345 ◽  
Author(s):  
Paul H. Holloway ◽  
J.-E. Yu ◽  
Phillip Rack ◽  
Joseph Sebastian ◽  
Sean Jones ◽  
...  
Keyword(s):  
Thin Film ◽  
Luminescence Spectra ◽  
Yellow Light ◽  
Light Emitting ◽  
Technology Center ◽  
Threshold Voltages ◽  
Passivation Layers ◽  
Sputter Deposited ◽  
20 Nm

AbstractFollowing a description of the purpose and participating members in the Phosphor Technology Center of Excellence, research on the growth and characterization of modulation doped ZnS:Mn and of Ca0.95Sr0.05Ga2S4:6%Ce are reported. ZnS:Mn has been grown using MOCVD and incorporation of Mn in 1 to 5 layers from 5 to 20 nm thick separated by layers of pure ZnS from 5 to 50 nm thick. This is shown to result in lower threshold voltages for ACTFELD displays. The luminescence spectra from sputter deposited, cerium-doped thiogallate thin films were measured and the diffusion of thin ZnS passivation layers versus temperature of heat treatment was discussed.

Electrical Characterization of Ion Imiplanted, Thermally Annealed TiN Films Acting as Diffusion Barriers on Shallow Junction Silicon Devices

1985 ◽  
Vol 45 ◽  
Author(s):  
A. Armigliato ◽  
M. Finetti ◽  
E. Gabilli ◽  
S. Guerri ◽  
P. Ostoja ◽  
...  
Keyword(s):  
Contact Resistance ◽  
Contact Area ◽  
Electrical Characterization ◽  
Diffusion Barriers ◽  
Contact Structures ◽  
Thermal Treatments ◽  
Tin Films ◽  
Shallow Junction ◽  
Silicon Devices

ABSTRACTTiN films prepared by implantation onto evaporated Ti layers are tested as diffusion barriers in contact with a thick Al overlayer. Both the TiN/Al and TiSi2/TiN/Al contact structures are evaluated, after thermal treatments up to 600 C, on shallow junction diodes and four terminal resistor test patterns for contact resistance measurements. It is shown that, upon annealing at 600 C, the TiSi2/TiN/Al contact system still exhibits excellent electrical performances. The degradation is found to depend on TiSi2 thickness and contact area.

Microstructural Characterization of CdTe Surface Passivation Layers

2010 ◽  
Vol 39 (7) ◽  
pp. 924-929
Author(s):  
W.F. Zhao ◽  
J. Cook ◽  
T. Parodos ◽  
S. Tobin ◽  
David J. Smith
Keyword(s):  
Surface Passivation ◽  
Microstructural Characterization ◽  
Passivation Layers ◽  
Cdte Surface
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