Study of nitrogen implanted amorphous hydrogenated carbon thin films by variable-energy positron annihilation spectroscopy

1997 ◽  
Vol 81 (5) ◽  
pp. 2451-2453 ◽  
Author(s):  
F. L. Freire ◽  
D. F. Franceschini ◽  
R. S. Brusa ◽  
G. R. Karwasz ◽  
G. Mariotto ◽  
...  
Keyword(s):  
Thin Films ◽  
Positron Annihilation ◽  
Positron Annihilation Spectroscopy ◽  
Carbon Thin Films ◽  
Amorphous Hydrogenated Carbon ◽  
Variable Energy

Study of Pore Architecture in Silicon Oxide Thin Films by Variable-energy Positron Annihilation Spectroscopy

2002 ◽  
Vol 751 ◽  
Author(s):  
Kenji Ito ◽  
Yoshinori Kobayashi ◽  
Runsheng Yu ◽  
Kouichi Hirata ◽  
Hisashi Togashi ◽  
...  
Keyword(s):  
Thin Films ◽  
Porous Silicon ◽  
Integrated Circuits ◽  
Positron Annihilation ◽  
Large Scale ◽  
Silicon Oxide ◽  
Positron Annihilation Spectroscopy ◽  
Oxide Thin Films ◽  
Intensive Investigation ◽  
Variable Energy

ABSTRACTApplication of porous silicon oxide thin films to nanotechnology is under intensive investigation. Introducing a large amount of nano pores into a silicon oxide matrix is important to develop low-k dielectrics for future ultra-large-scale integrated circuits (ULSI). In this work, we applied variable-energy positron annihilation to the characterization of porous silicon oxide thin films fabricated on silicon wafers by sputtering and spincoating. It was found that the sputtered film has higher open pore connectivity than that of the spincoated low-k film.

GaN Thin Films on SiC Substrates Studied Using Variable Energy Positron Annihilation Spectroscopy

2001 ◽  
Vol 363-365 ◽  
pp. 478-480 ◽  
Author(s):  
Y.F. Hu ◽  
Y.Y. Shan ◽  
C.D. Beling ◽  
S. Fung ◽  
M.H. Xie ◽  
...  
Keyword(s):  
Thin Films ◽  
Positron Annihilation ◽  
Positron Annihilation Spectroscopy ◽  
Variable Energy

The Interaction of CdSe/ZnS Quantum Dot with Plasmonic Ag Nanoparticles Deposited on Amorphous Hydrogenated Carbon Thin Films

2018 ◽  
Vol 125 (5) ◽  
pp. 731-734 ◽  
Author(s):  
D. Khmelevskaya ◽  
D. P. Shcherbinin ◽  
E. A. Konshina ◽  
M. M. Abboud ◽  
A. Dubavik ◽  
...  
Keyword(s):  
Thin Films ◽  
Quantum Dot ◽  
Ag Nanoparticles ◽  
Carbon Thin Films ◽  
Amorphous Hydrogenated Carbon

scholarly journals Photochromic YOxHy Thin Films Examined by in situ Positron Annihilation Spectroscopy

2020 ◽  
Vol 137 (2) ◽  
pp. 205-208 ◽  
Author(s):  
S.W.H. Eijt ◽  
T.W.H. de Krom ◽  
D. Chaykina ◽  
H. Schut ◽  
G. Colombi ◽  
...  
Keyword(s):  
Thin Films ◽  
Positron Annihilation ◽  
Positron Annihilation Spectroscopy

Modified Forouhi and Bloomer dispersion model for the optical constants of amorphous hydrogenated carbon thin films

1994 ◽  
Vol 253 (1-2) ◽  
pp. 57-61 ◽  
Author(s):  
William A. McGahan ◽  
Tim Makovicka ◽  
Jeffrey Hale ◽  
John A. Woollam
Keyword(s):  
Thin Films ◽  
Optical Constants ◽  
Dispersion Model ◽  
Carbon Thin Films ◽  
Amorphous Hydrogenated Carbon

Photoluminescence and positron annihilation spectroscopy of MeV Si+ ion-irradiated SiyO1−y:Er (y≈1/3) thin films

2009 ◽  
Vol 105 (5) ◽  
pp. 053517
Author(s):  
D. E. Blakie ◽  
O. H. Y. Zalloum ◽  
J. Wojcik ◽  
E. A. Irving ◽  
A. P. Knights ◽  
...  
Keyword(s):  
Thin Films ◽  
Positron Annihilation ◽  
Positron Annihilation Spectroscopy

POSITRON INTERACTION IN POLYMERS

2004 ◽  
Vol 19 (23) ◽  
pp. 3951-3959 ◽  
Author(s):  
CORINE BAS ◽  
N. DOMINIQUE ALBÉROLA ◽  
MARIE-FRANCE BARTHE ◽  
JÉRÉMIE De BAERDEMAEKER ◽  
CHARLES DAUWE
Keyword(s):  
Positron Annihilation ◽  
Chemical Structure ◽  
Positron Beam ◽  
Positron Annihilation Spectroscopy ◽  
Hole Size ◽  
Doppler Broadening ◽  
Positron Source ◽  
Positron Annihilation Lifetime ◽  
Doppler Broadening Spectra ◽  
Variable Energy

A series of dense copolyimide membranes was characterized using positron annihilation spectroscopy. The positron annihilation lifetime spectroscopy performed on film with a classical positron source gives informations on the positronium fraction formed and also on the hole size within the film. The Doppler broadening spectra (DBS) of the gamma annihilation rays coupled with a variable energy positron beam allow the microstructural analyses as a function of the film depth. Experimental data were also linked to the chemical structure of the polyimides. It was found that the presence of the fluorine atoms strongly affects the positron annihilitation process and especially the DBS responses.

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