scholarly journals Influence of the Crystal Texture on Raman Spectroscopy of the AlN Films Prepared by Pulse Laser Deposition

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Jingjing Wang ◽  
Da Chen ◽  
Yan Xu ◽  
Qixin Liu ◽  
Luyin Zhang
Keyword(s):  
Raman Spectrum ◽  
Raman Scattering ◽  
Pulse Laser Deposition ◽  
Pulse Laser ◽  
Laser Deposition ◽  
High Mode ◽  
Crystal Quality ◽  
X Ray ◽  
Crystal Texture ◽  
Xrd Patterns

We investigate the Raman scattering of the AlN films prepared by pulse laser deposition. The Raman spectrum and the X-ray diffraction (XRD) patterns of the AlN films were compared to find out the influence of the crystal texture on the Raman scattering. TheE2(high) andA1(TO) scattering modes were observed in Raman spectra. The results show that the orientation and the crystal quality of the AlN films have a great impact on these Raman scattering modes. The deterioration of (002) orientation and the appearance of other orientations in the XRD patterns lead to the weakening of theE2(high) mode and strengthening of theA1(TO) mode in the Raman spectrum. In addition, theE2(high) peak is broadened with the increasing of the width of the X-ray rocking curve. The broadening of the Raman peaks can be associated with degeneration in crystal quality. Furthermore, by combining the energy shift ofE2(high) mode with the measured residual stress in the films, the Raman-stress factor of the AlN films prepared by pulse laser deposition is −4.45 cm−1/GPa for theE2(high) mode.

In situ X-ray Studies of (La,Sr)MnO3_δ, (La,Sr)CoO3_δ, and La0.6Sr0.4Co0.2Fe0.8O3-δ Thin Film SOFC Cathodes Grown by Pulse Laser Deposition

2013 ◽  
Vol 1495 ◽  
Author(s):  
Kee-Chul Chang ◽  
Brian Ingram ◽  
Paul Salvador ◽  
Bilge Yildiz ◽  
Hoydoo You
Keyword(s):  
Thin Film ◽  
Solid Oxide Fuel Cells ◽  
Pulse Laser Deposition ◽  
Pulse Laser ◽  
Solid Oxide ◽  
Laser Deposition ◽  
Pulse Laser Deposition Technique ◽  
Oxide Fuel ◽  
X Ray

ABSTRACTWe will briefly review in situ synchrotron x-ray investigation of model thin film cathode systems for solid oxide fuel cells. The film cathodes examined in this study are (La,Sr)MnO3_δ (LSM), (La,Sr)CoO3_δ (LSC), and La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) thin films epitaxially grown on YSZ single crystal substrates by the pulse laser deposition technique. We find in all cases that Sr is enriched or segregated to the surface of the film cathodes. We concluded that the Sr enrichments or segregations are mainly the results of annealing because they do not depend on whether the cathodes are electrochemically biased or not during annealing. However, at least in the case of LSCF, we find that B-site Co segregates rather uniformly to the surface and the segregation responds sensitively and reversibly to the electrochemical bias.

Comparative studies on BaZrxTi1-xO3 thin films deposited by Sol-gel and Pulse laser deposition

2003 ◽  
Vol 784 ◽  
Author(s):  
A. Dixit ◽  
P. Bhattacharaya ◽  
S. B. Majumder ◽  
R. S. Katiyar ◽  
A. S. Bhalla
Keyword(s):  
Thin Films ◽  
Pulse Laser Deposition ◽  
Pulse Laser ◽  
Sol Gel ◽  
Laser Deposition ◽  
Pulse Laser Deposition Technique ◽  
X Ray Diffraction ◽  
X Ray ◽  
Si Substrates ◽  
Capacitance Voltage

ABSTRACTFerroelectric thin films of BaZrxTi1-xO3 (BZT) were deposited on platinum (Pt) and platinized silicon (Pt/Si) substrates by sol-gel and pulse laser deposition technique respectively. The structure and preferred orientation of the films were examined by x-ray diffraction measurements. The phase formation of sol-gel derived BZT films were found to be at high temperature (1100°C) compare to the pulse laser deposited BZT films ∼ 700°C. Polycrystalline films were observed by both techniques. Ferroelectric nature of the films was confirmed by hysteresis and capacitance-voltage characteristics using platinum top electrodes. Dielectric constant as well as loss was found to decrease by increasing Zr contents. Surface morphology predicted smooth crack free surface.

scholarly journals Pulse Laser Deposition Fabricating Gold Nanoclusters on a Glassy Carbon Surface for Nonenzymatic Glucose Sensing

2015 ◽  
Vol 31 (7) ◽  
pp. 609-616 ◽  
Author(s):  
Honghui SHU ◽  
Gang CHANG ◽  
Zhiqiang WANG ◽  
Pai LI ◽  
Yuting ZHANG ◽  
...  
Keyword(s):  
Pulse Laser Deposition ◽  
Pulse Laser ◽  
Glassy Carbon ◽  
Gold Nanoclusters ◽  
Glucose Sensing ◽  
Laser Deposition ◽  
Carbon Surface ◽  
Glassy Carbon Surface

Pulse laser deposition fabricated InP/Al-ZnO heterojunction solar cells with efficiency enhanced by an i-ZnO interlayer

2015 ◽  
Vol 121 (3) ◽  
pp. 1219-1226 ◽  
Author(s):  
Qiong Nian ◽  
Kyle H. Montgomery ◽  
Xin Zhao ◽  
Tom Jackson ◽  
Jerry M. Woodall ◽  
...  
Keyword(s):  
Solar Cells ◽  
Pulse Laser Deposition ◽  
Pulse Laser ◽  
Laser Deposition ◽  
Heterojunction Solar Cells

Short-pulse laser deposition of diamond-like carbon thin films

1999 ◽  
Vol 69 (7) ◽  
pp. S347-S353 ◽  
Author(s):  
P.S. Banks ◽  
L. Dinh ◽  
B.C. Stuart ◽  
M.D. Feit ◽  
A.M. Komashko ◽  
...  
Keyword(s):  
Thin Films ◽  
Pulse Laser Deposition ◽  
Pulse Laser ◽  
Short Pulse ◽  
Laser Deposition ◽  
Diamond Like Carbon ◽  
Short Pulse Laser ◽  
Carbon Thin Films

Few-layer graphene film fabricated by femtosecond pulse laser deposition without catalytic layers

2015 ◽  
Vol 13 (2) ◽  
pp. 021601-21604 ◽  
Author(s):  
Xiangming Dong Xiangming Dong ◽  
Shibing Liu Shibing Liu ◽  
Haiying Song Haiying Song ◽  
Peng Gu Peng Gu ◽  
Xiaoli Li Xiaoli Li
Keyword(s):  
Pulse Laser Deposition ◽  
Pulse Laser ◽  
Femtosecond Pulse ◽  
Graphene Film ◽  
Laser Deposition ◽  
Femtosecond Pulse Laser ◽  
Layer Graphene ◽  
Few Layer Graphene ◽  
Catalytic Layers
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