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دانشگاه سمنان رشد تکبلورهای سهتایی ZnS x Se 1-x به روش CVT و...
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Transcript of دانشگاه سمنان رشد تکبلورهای سهتایی ZnS x Se 1-x به روش CVT و...
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ZnSxSe1-x CVT
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:
1388
II-VI
II-VI
CVT
(CVT)
CVT
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(1619) (1665) . (1690) ((CaCO3 .4
II-VI
II-VI
CVT
(CVT)
CVT
5
. () .
6 7 : .
: .
: .
8
II-VI
II-VI
CVT
(CVT)
CVT
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II-VI .
.
.
.
10 ZnSxSe1-x
ZnSxSe1-x x=0.1 x=0.8 0.1 11
II-VI
II-VI
CVT
(CVT)
CVT
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II-VI1313 .
14 14
II-VI
II-VI
CVT
(CVT)
CVT
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CVT 1953 .
1965 RCA ZnSe .
1969 ZnSe .
1976 ZnSxSe1-x ZnSe .
1977 ZnS ZnSe ZnTe .
1979 ZnSxSe1-x ZnSe ZnS .16
II-VI
II-VI
CVT
(CVT)
CVT
17
CVT
.
:
A(s)+B(g) AB(g) AB(g) A(s)+B(g) 18
19Chemical Vapor Transport T2 T1
T1>T2
20 .
. 21
22
II-VI
II-VI
CVT
(CVT)
CVT
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CVT
- -
24 CVT
25
II-VI
II-VI
CVT
(CVT)
CVT
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ZnSxSe1-x27 ZnSxSe1-x I I2 ZnI2 S2 Se2 . :
28 (1) (2) (3) :
(1) (3)(2)
:
:
400-1200 oC ZnSxSe1-x I2 (C) .
ZnSxSe1-x
29 :
ZnI2 :
ZnSxSe1-x
=(T2)-(T1)
30 ZnSxSe1-x 0/6 x=
31 ZnSxSe1-x x
32
II-VI
II-VI
CVT
(CVT)
CVT
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3434 3216 TZF CVT
35
36
37
38 .
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40
II-VI
II-VI
CVT
(CVT)
CVT
41
CVT ZnSe
4243
ZnSe
ZnSe ZnSe
44
ZnS0.3Se0.6 ZnS0.6Se0.4
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46 ZnS0.6Se0.4
ZnS0.7Se0.3 47
II-VI
II-VI
CVT
(CVT)
CVT
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(XRD)
(UV-Vis)
SEM
(Etching)49 XRD50
50
x ZnS0.3Se0.6 XRD5151 x ZnS0.6Se0.4
XRD 5252 Vickers Hardness
5353 (111) a) ZnS0.6Se0.4 b) ZnS0.3Se0.7 c) ZnSe
Vickers Hardness
5454 UV-Visible Spectroscopy
55 55 UV-Visible Spectroscopy
ZnS0.3Se0.7444 nm5656 UV-Visible Spectroscopy
ZnSe497.5 nm575758
SEM
ZnSe ZnSe 5959 SEM
ZnSe ZnSe
6060 SEM
ZnS0.6Se0.4
6161 Etching
(111) ZnSe
6262 Etching
63 (111) ZnS0.6Se0.463 Etching
(111) ZnS0.6Se0.4
6464
II-VI
II-VI
CVT
(CVT)
CVT
65
ZnSxSe1-x-I2 CVT x . x . ZnSe .
ZnSxSe1-x x=0.0 x=0.3 x=0.6 .
ZnSe . x=0.0 ZnSe .
ZnSe .
ZnSxSe1-x x . 66
. x x . .
67Aurelio Catano and Zoltan K. Kun, Journal of Crystal Growth 33(1976) 324-330
P. Hartmann, in Crystal Growth An Introduction, Ed. P. Hartman (1973) P.368
M.J.Tafreshi, M.Fazli; Indian Journal of pure and applied physics, (2008)651-656
" ZnSxSe1-x CVT" 1388-
S. Armstrong, P.K. Datta, R.W. Miles, Thin Solid Films 403-404 (2002) 126-129
M.J. Tafreshi,K. Balakrishnan and R. Dhanasekaran " Growth, electrical conductivity and microindentation studies of CuInS2 single crystals", I1 nuovo Cimento D, Vol 18 (1996) 471-476
K. Sangwal , Prog. Cryst. Growth Character.19, 189(1989)
M.J. Tafreshi,K. Balakrishnan ,R. Dhanasekaran, "Micromorphological studies on the ZnSe single crystals grown by chemical vapor transport technique", journal of materials science 32(1997) 3517-3521
K.Sangwal, "Etching of crystals; Theory, experiment, and application" (1987)P.23
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