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3-1
2011/09/21
()
()()
3-2
I Introduction(1/6)
3-3
I Introduction(2/6)
3-4
I Introduction(3/6)
1.
2.
3.
4.
5.
6.
3-5
I Introduction(4/6)
3-6
I Introduction(5/6)
ZnO
Band Gap Eg(eV) 3.4
Lattice parameters() a3.2 c5.2
Dopants Al, B, Mn, In, Ga, Si, Sn, F
Effective electron mass() 0.28
Density(g/cm3) 5.67
Crystal structure hexagonal, wurtzite
Relative permittivity 8.1
Melting point of Zn metal() 420
(ZnO)II-VIn-type(HCP)(Wurtzite structure)3.4 eV60 meVa3.2 c5.2 (380nm~780nm)(
3-7
I Introduction(6/6)
(2-methoxy ethanol)
(Anhydrous ethanol)(ZnO)(Al)
3-8
II Experimental(1/5)
1
24
111
0 %1 %3 %5 %
3-9
II Experimental(2/5)
(2.5cm) (2.5cm)
(15min)
(15min)
2
(15min)
(30min)
3-10
II Experimental(3/5)
1020
(0.2ml)
1500rpm
(10 s)
3000rpm
(20 s)
(5min)
(1hr)
3-11
II Experimental(4/5)
(SDT)
X(XRD)
(SEM)
EDS
EDS
3-12
II Experimental(5/5)
(-Step)
(UV-VSI-NIR)
(FourPoint Probe)
3-13
III Results and discussion(1/19)
(a) (b)
(C) (d)
70%
17%
(a)0%(b)1%(c)3% (d)5%TGA/DSC
3-14
III Results and discussion(2/19)
XRD
3-15
III Results and discussion(5/19)
(a)0%(b)1%(c)3% (d)5%EDS
Element Weight% Atomic%
O 19.54 51.90
Zn 70.71 45.97
Pt 9.75 2.12
Totals 100.00
Element Weight% Atomic%
O 18.14 49.84
Al 0.32 0.52
Zn 69.89 47.01
Pt 11.65 2.63
Totals 100.00
Element Weight% Atomic%
O 18.29 50.26
Al 0.84 1.37
Zn 67.39 45.33
Pt 13.48 3.04
Totals 100.00
Element Weight% Atomic%
O 20.22 53.15
Al 1.68 2.62
Zn 64.04 41.20
Pt 14.06 3.03
Totals 100.00
(a) (b)
(c) (d)
3-16
III Results and discussion(7/19)
(a)0%(b)1%(c)3%(d)5%SEM
(a) (b)
(c) (d)
0% 53.86nm
1% 29.571nm
3% 27.591nm
5% 24nm
3-17
III Results and discussion(10/19)
-
0%
5%
3-18
III Results and discussion(11/19)
-
3-19
III Results and discussion(13/19)
(Eg)
hAEgn1/22/3(h)2 = 0 (Eg)
TRd
3-20
III Results and discussion(15/19)
3.2667eV
3.3394eV
3-21
III Results and discussion(18/19)
3-22
2011/09/21
BZT
()()
3-23
PZT
(BaTiO3)ZrBZT
Ba(ZrXTi1-X)O3= 00.10.20.30.5(BZT)(BZT)
3-24
BaTiO3ZrO2
Ball milling
Drying
Pressig
Sintering
Poling
r
Density
X-ray
SEM
Shrinkage
EDS
1. 2. X
3.
2. X
4. Agilent 4285
5.
3-25
XRD
20 30 40 50 60 70
0
500
1000
1500
2000
Ba(Zr0.5
Ti0.5
)O3
Ba(Zr0.3
Ti0.7
)O3
Ba(Zr0.2
Ti0.8
)O3
Ba(Zr0.1
Ti0.9
)O3
BaTiO3
BZTZrO
2
lnte
nsity
2
. 6 XRD of BZT ceramic sintered at 1400 with different Zr-doped.
3-26
SEM()
. 6 SEM of Zr-doped BZT ceramic sintered at 1400
(a) 0wt% Outside (a) 0wt% Inside
3-27
(b) 10wt% Outside
4-2 SEM ()
(b) 10wt% Inside
. 7 SEM of Zr-doped BZT ceramic sintered at 1400
3-28
0 10 20 30 40 50
8.0
8.2
8.4
8.6
8.8
9.0
Rel
ativ
e de
nsity
wt%
. 11 Relative density of the Zr-doped of BZT ceramic sintered at 1400.
3-29
0 10 20 30 40 50
37
38
39
40
41
42
43
44sh
rink
age%
wt%. 12 Shrinkage as functions of the Zr-doped of BZT ceramic sintered at 1400.
3-30
BZTBZT
3-31
6061
1
2
6061
3
6061
4
5
6061
6
7
8
9
10
11
12
13
14
3-32
-