supported cnts emitters with simple spraying process ... · e-mail: [email protected] (z....

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* 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 9 10 Supporting Information 11 12 13 14 15 16 17 18 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

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Page 1: Supported CNTs Emitters with Simple Spraying Process ... · E-mail: yangzunxian@hotmail.com (Z. Yang) gtl_fzu@hotmail.com (T. Guo) 1 Greatly Enhanced Field Emission of the Novel T-ZnO

* 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

9

10 Supporting Information

11

12

13

14

15

16

17

18

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

Page 2: Supported CNTs Emitters with Simple Spraying Process ... · E-mail: yangzunxian@hotmail.com (Z. Yang) gtl_fzu@hotmail.com (T. Guo) 1 Greatly Enhanced Field Emission of the Novel T-ZnO

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

42

43

Page 3: Supported CNTs Emitters with Simple Spraying Process ... · E-mail: yangzunxian@hotmail.com (Z. Yang) gtl_fzu@hotmail.com (T. Guo) 1 Greatly Enhanced Field Emission of the Novel T-ZnO

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47

48 Fig.S1

Page 4: Supported CNTs Emitters with Simple Spraying Process ... · E-mail: yangzunxian@hotmail.com (Z. Yang) gtl_fzu@hotmail.com (T. Guo) 1 Greatly Enhanced Field Emission of the Novel T-ZnO

52

53

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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

Page 5: Supported CNTs Emitters with Simple Spraying Process ... · E-mail: yangzunxian@hotmail.com (Z. Yang) gtl_fzu@hotmail.com (T. Guo) 1 Greatly Enhanced Field Emission of the Novel T-ZnO

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61

62

65

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64 Fig.S3

Page 6: Supported CNTs Emitters with Simple Spraying Process ... · E-mail: yangzunxian@hotmail.com (Z. Yang) gtl_fzu@hotmail.com (T. Guo) 1 Greatly Enhanced Field Emission of the Novel T-ZnO

68

69

70

73

74

75

71

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

Page 7: Supported CNTs Emitters with Simple Spraying Process ... · E-mail: yangzunxian@hotmail.com (Z. Yang) gtl_fzu@hotmail.com (T. Guo) 1 Greatly Enhanced Field Emission of the Novel T-ZnO

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80 Fig.S5