Saddle-Field Glow-Discharge Deposition of Amorphous Semiconductors

1996 ◽  
Vol 420 ◽  
Author(s):  
F. Gaspari ◽  
L. S. Sidhu ◽  
S. K. O'leary ◽  
S. Zukotynski

AbstractWe present a dc saddle-field glow-discharge deposition procedure which combines the positive attributes of the conventional dc and rf glow-discharge techniques. Preliminary mass spectra analyses of both silane and methane glow-discharges demonstrates that ions constitute a significant fraction of the species reaching the film surface. Growth rate analyses suggest that ions play a significant role in the saddle-field glow-discharge deposition of amorphous semiconducting films.

1989 ◽  
Vol 65 (1) ◽  
pp. 70-78 ◽  
Author(s):  
Laurence E. Kline ◽  
William D. Partlow ◽  
William E. Bies

Author(s):  
B. Schröder ◽  
J. Geiger ◽  
H.W. Müller

In a previous paper /l/ it has been pointed out that electron energy loss spectroscopy in the infrared spectral region is a very sensitive tool for the study of structure and composition of thin films. Here as a further example the energy loss study of amorphous silicon films is presented. In the case of amorphous semiconductors where most of the optical and electrical properties are still strongly influenced by impurities an analytical test is substantial.Silicon films have been investigated which have been prepared by different methods and under different conditions: by evaporation, by decomposition of silane (SiH4) in a rf glow discharge and by sputtering. The influence of the substrate temperature has been studied for films produced by silane decomposition.Fig. 1 shows a typical spectrum of amorphous silicon prepared by the glow discharge method obtained by 30 keV electrons with a resolution of 3 to 4 meV.


1998 ◽  
Vol 13 (7) ◽  
pp. 2003-2014 ◽  
Author(s):  
Y. Gao ◽  
Y. J. Kim ◽  
S. A. Chambers

Well-ordered, pure-phase epitaxial films of FeO, Fe3O4, and γ–Fe2O3 were prepared on MgO(001) by oxygen-plasma-assisted MBE. The stoichiometries of these thin films were controlled by varying the growth rate and oxygen partial pressure. Selective growth of γ–Fe2O3 and α–Fe2O3 was achieved by controlling the growth conditions in conjunction with the choice of appropriate substrates. Growth of the iron oxide epitaxial films on MgO at ≥350 °C is accompanied by significant Mg outdiffusion. The FeO(001) film surface exhibits a (2 × 2) reconstruction, which is accompanied by a significant amount of Fe3+ in the surface region. Fe3O4 (001) has been found to reconstruct to a structure. γ–Fe23 (001) film surface is unreconstructed.


1980 ◽  
Vol 13 (6) ◽  
pp. L101-L105 ◽  
Author(s):  
D Mangalaraj ◽  
M Radhakrishnan ◽  
C Balasubramanian ◽  
A R Kasilingam

1995 ◽  
Vol 142 (5) ◽  
pp. 1663-1666 ◽  
Author(s):  
Ahalapitiya Hewage Jayatissa ◽  
Yoichiro Nakanishi ◽  
Yosinori Hatanaka

1984 ◽  
Vol 38 ◽  
Author(s):  
F. J. Kampas

AbstractIntensities of CH optical emission and electrical properties of methane rf discharges as a function of pressure are presented and discussed. The results are consistent with a model in which the properties of the discharge are dominated by secondary electrons traversing the gap between the electrodes.


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