supported cnts emitters with simple spraying process ... · e-mail: [email protected] (z....
TRANSCRIPT
* Corresponding author should be addressed. Tel.: +86 591 8789 3299;
Fax: +86 591 8789 2643
E-mail: [email protected] (Z. Yang)
[email protected] (T. Guo)
1 Greatly Enhanced Field Emission of the Novel T-ZnO
2 Supported CNTs Emitters with Simple Spraying Process
3
4 ZunxianYang*, Wenhuan Yan, Jun Lv, Kun Qian, Yuxiang Zhang, Jiahui Liu,
5 Jingwei Ai, Tailiang Guo*, Enguo Chen, Liqin Hu
6
7 National & Local United Engineering Laboratory of Flat Panel Display Technology,
8 Fuzhou University, Fuzhou 350002, P. R. China
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10 Supporting Information
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19 Captions
20 Fig.S1 (a) the low-magnification and high magnification SEM images (inset) of as-
21 prepared pure T-ZnO nanomaterials sprayed on the substrate with low concentration
Electronic Supplementary Material (ESI) for Journal of Materials Chemistry C.This journal is © The Royal Society of Chemistry 2016
22 T-ZnO precursor solution (5mg T-ZnO: 100ml isopropanol solution); (b) the low-
23 magnification and high magnification SEM images (inset) of as-prepared pure T-ZnO
24 nanomaterials sprayed on the substrate with high concentration T-ZnO precursor
25 solution (8mg T-ZnO: 100ml isopropanol solution); (c) the low-magnification and
26 high magnification SEM images (inset) of as-sprayed T-ZnO and CNT by turns with
27 low concentration T-ZnO and CNT precursor solutions, respectively(8mg T-ZnO:
28 100ml isopropanol solution; 0.3g CNT: 1L isopropanol solution); (d) the low-
29 magnification SEM image of as-sprayed T-ZnO and CNT by turns with high
30 concentration T-ZnO and CNT precursor solutions, respectively(8mg T-ZnO: 100ml
31 isopropanol solution; 0.5g CNT: 1L isopropanol solution).
32 Fig.S2 (a) J-E curves of the samples of the ZnO film consisting of ZnO nanoparticles;
33 (b) the corresponding Fowler-Nordheim (F-N) plots of (a).
34 Fig.S3 The corresponding luminance photos of the samples of the pure T-ZnO, pure
35 CNTs and T-ZnO/CNTs composite. (a) Pure T-ZnO under the voltage of 400V; (b)
36 Pure CNTs under the voltage of 500V; (c) T-ZnO/CNTs composite under the voltage
37 of 240V.
38 Fig.S4 the emission stability of pure T-ZnO、pure CNTs and T-ZnO/CNTs.
39 Fig.S5 the schematic diagram of the field emission measurement and the
40 corresponding electronic circuits. (a) The schematic diagram of the field emission test;
41 (b) the mechanism diagram for their simple electronic circuits
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48 Fig.S1
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55 0 2 4 6 8 10 12
0.000
0.005
0.010
0.015
0.020
0.025 (a)
J (m
A/cm
2 )
E (V/m)
The turn-on electrical field of ZnO film:9.72V/m
0.00 0.05 0.10 0.15 0.20 0.25 0.30-12
-11
-10
-9
-8 (b) Field enhancement factor of ZnO film: 1090
ln(J
/E2 )
1/E
56 Fig.S2
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64 Fig.S3
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0 50 100 150 2000.14
0.21
0.28
0.35
0.42
0.49
0.56
T-ZnO/CNTs CNTs T-ZnO
I (m
A)
t (min)
72 Fig.S4
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80 Fig.S5