Doped and undoped zinc oxide fibers were fabricated by electrospinning at various solution flow rates of 2, 4, and 6 μl/min followed by sintering at 550 °C. The nanogenerators (NGs) fabricated from the fibers were examined for their performance by applying loads (0.25–1.5 kg) representing fingers taps on the keyboard. A higher solution flow rate resulted in a larger fiber diameter, thus reducing nanogenerator voltage. The maximum power density for undoped zinc oxide-based and doped zinc oxide-based nanogenerators was 17.6 and 51.7 nW/cm2, respectively, under a load of 1.25 kg. Enhancing nanogenerator stability is a topic that should be investigated further.

References

References
1.
Meng
,
X.
,
Yang
,
C.
,
Chen
,
Q.
, and
Yang
,
J.
,
2013
, “
Influence of the PZT Film Thickness on the Structure and Electrical Properties of the ZnO/PZT Heterostructure
,”
J. Mater. Sci.: Mater. Electron.
,
24
(
1
), pp.
160
165
.10.1007/s10854-012-1004-2
2.
Chen
,
X.
,
Xu
,
S.
,
Yao
,
N.
, and
Shi
,
Y.
,
2010
, “
1.6 V Nanogenerator for Mechanical Energy Harvesting Using PZT Nanofibers
,”
Nano Lett.
,
10
(
6
), pp.
2133
2137
.10.1021/nl100812k
3.
Ramam
,
K. V. S.
,
Murthy
,
K. V. R.
,
Trinath
,
K.
, and
Bhanumathi
,
A.
,
1995
, “
Piezoelectric Properties, Hysteresis Behaviour and Dielectric Properties of PMN-PZT Ceramics
,”
Bull. Mater. Sci.
,
18
(
5
), pp.
587
592
.10.1007/BF02744844
4.
Park
,
K. I.
,
Xu
,
S.
,
Liu
,
Y.
,
Hwang
,
G. T.
,
Kang
,
S. J. L.
,
Wang
,
Z. L.
, and
Lee
,
K. J.
,
2010
, “
Piezoelectric BaTiO3 Thin Film Nanogenerator on Plastic Substrates
,”
Nano Lett.
,
10
(
12
), pp.
4939
4943
.10.1021/nl102959k
5.
Terashi
,
Y.
,
Purwanto
,
A.
,
Wang
,
W. N.
,
Iskandar
,
F.
, and
Okuyama
,
K.
,
2008
, “
Role of Urea Addition in the Preparation of Tetragonal BaTiO3 Nanoparticles Using Flame-Assisted Spray Pyrolysis
,”
J. Eur. Ceram. Soc.
,
28
(
13
), pp.
2570
2580
.10.1016/j.jeurceramsoc.2008.03.002
6.
Lee
,
H.
,
Cooper
,
R.
,
Wang
,
K.
, and
Liang
,
H.
,
2008
, “
Nano-Scale Characterization of a Piezoelectric Polymer (Polyvinylidene Difluoride, PVDF)
,”
Sensors
,
8
(
11
), pp.
7359
7368
.10.3390/s8117359
7.
Indolia
,
A. P.
, and
Gaur
,
M. S.
,
2012
, “
Investigation of Structural and Thermal Characteristics of PVDF/ZnO Nanocomposites
,”
J. Therm. Anal. Calorim.
,
113
(
2
), pp.
821
830
.10.1007/s10973-012-2834-0
8.
Parija
,
B.
,
Badapanda
,
T.
,
Senthil
,
V.
,
Rout
,
S. K.
, and
Panigrahi
,
S.
,
2012
, “
Diffuse Phase Transition, Piezoelectric and Optical Study of Bi0·5Na0·5TiO3 Ceramic
,”
Bull. Mater. Sci.
,
35
(
2
), pp.
197
202
.10.1007/s12034-012-0276-8
9.
Zhao
,
M. H.
,
Wang
,
Z. L.
, and
Mao
,
S. X.
,
2004
, “
Piezoelectric Characterization of Individual Zinc Oxide Nanobelt Probed by Piezoresponse Force Microscope
,”
Nano Lett.
,
4
(
4
), pp.
587
590
.10.1021/nl035198a
10.
Chang
,
W. Y.
,
Fang
,
T. H.
,
Iweng
,
C.
, and
Yang
,
S. S.
,
2011
, “
Flexible Piezoelectric Harvesting Based on Epitaxial Growth of ZnO
,”
Appl. Phys. A: Mater. Sci. Process.
,
102
(
3
), pp.
705
711
.10.1007/s00339-010-5962-z
11.
Gopal
,
P.
, and
Spaldin
,
N. A.
,
2006
, “
Polarization, Piezoelectric Constants, and Elastic Constants of ZnO, MgO, and CdO
,”
J. Electron. Mater.
,
35
(
4
), pp.
538
542
.10.1007/s11664-006-0096-y
12.
Kim
,
Y. H.
,
Baek
,
N. S.
,
Kim
,
K. H.
, and
Jung
,
S.-D.
,
2012
, “
Simplifying Patterning Process of ZnO Nanowires by One Step Development and Etching Process
,”
J. Sol-Gel Sci. Technol.
,
64
(
2
), pp.
304
308
.10.1007/s10971-012-2858-8
13.
Lee
,
S. H.
,
Lee
,
S. S.
,
Choi
,
J. J.
,
Jeon
,
J. U.
, and
Ro
,
K.
,
2005
, “
Fabrication of a ZnO Piezoelectric Micro Cantilever With a High-Aspect-Ratio Nano Tip
,”
Microsyst. Technol.
,
11
(
6
), pp.
416
423
.10.1007/s00542-004-0494-0
14.
Momeni
,
K.
,
Asthana
,
A.
,
Prasad
,
A.
,
Yap
,
Y. K.
, and
Shahbazian-Yassar
,
R.
,
2012
, “
Structural Inhomogeneity and Piezoelectric Enhancement in ZnO Nanobelts
,”
Appl. Phys. A: Mater. Sci. Process.
,
109
(
1
), pp.
95
100
.10.1007/s00339-012-7081-5
15.
Pan
,
M. C.
,
Wu
,
T. H.
,
Bui
,
T. A.
, and
Shih
,
W. C.
,
2012
, “
Fabrication of Highly C-Axis Textured ZnO Thin Films Piezoelectric Transducers by RF Sputtering
,”
J. Mater. Sci.: Mater. Electron.
,
23
(
2
), pp.
418
424
.10.1007/s10854-011-0490-y
16.
Park
,
J. A.
,
Moon
,
J.
,
Lee
,
S. J.
,
Lim
,
S. C.
, and
Zyung
,
T.
,
2009
, “
Fabrication and Characterization of ZnO Nanofibers by Electrospinning
,”
Curr. Appl. Phys.
,
9
(
3
), pp.
S210
S212
.10.1016/j.cap.2009.01.044
17.
Ren
,
H.
,
Ding
,
Y.
,
Jiang
,
Y.
,
Xu
,
F.
,
Long
,
Z.
, and
Zhang
,
P.
,
2009
, “
Synthesis and Properties of ZnO Nanofibers Prepared by Electrospinning
,”
J. Sol-Gel Sci. Technol.
,
52
(
2
), pp.
287
290
.10.1007/s10971-009-2030-2
18.
Shen
,
X.
,
Sun
,
J.
,
Zhu
,
G.
,
Ji
,
Z.
,
Chen
,
Z.
, and
Li
,
N.
,
2013
, “
Morphological Syntheses of ZnO Nanostructures Under Microwave Irradiation
,”
J. Mater. Sci.
,
48
(
6
), pp.
2358
2364
.10.1007/s10853-012-7017-7
19.
Wang
,
Z. L.
,
2007
, “
Novel Nanostructures of ZnO for Nanoscale Photonics, Optoelectronics, Piezoelectricity, and Sensing
,”
Appl. Phys. A: Mater. Sci. Process.
,
88
(
1
), pp.
7
15
.10.1007/s00339-007-3942-8
20.
Yang
,
X.
,
Shao
,
C.
,
Guan
,
H.
,
Li
,
X.
, and
Gong
,
J.
,
2004
, “
Preparation and Characterization of ZnO Nanofibers by Using Electrospun PVA/Zinc Acetate Composite Fiber as Precursor
,”
Inorg. Chem. Commun.
,
7
(
2
), pp.
176
178
.10.1016/j.inoche.2003.10.035
21.
Haertling
,
G. H.
,
1999
, “
Ferroelectric Ceramics: History and Technology
,”
J. Am. Ceram. Soc.
,
82
(
4
), pp.
797
818
.10.1111/j.1151-2916.1999.tb01840.x
22.
Uchino
,
K.
,
2003
, “
Introduction to Piezoelectric Actuators and Transducers
,”
International Center for Actuators and Transducers, Pennsylvania State University, Technical Report No. 0704-0188
.
23.
Devan
,
R. S.
,
Patil
,
R. A.
,
Lin
,
J. H.
, and
Ma
,
Y. R.
,
2012
, “
One-Dimensional Metal-Oxide Nanostructures: Recent Developments in Synthesis, Characterization, and Applications
,”
Adv. Funct. Mater.
,
22
(
16
), pp.
3326
337
.10.1002/adfm.201201008
24.
Jin
,
D.
, and
Meng
,
Z.
,
2003
, “
Functionally Graded PZT/ZnO Piezoelectric Composites
,”
J. Mater. Sci. Lett.
,
22
(
13
), pp.
971
974
.10.1023/A:1024612929936
25.
Lin
,
R. C.
,
Chen
,
Y. C.
, and
Kao
,
K. S.
,
2007
, “
Two-Step Sputtered ZnO Piezoelectric Films for Film Bulk Acoustic Resonators
,”
Appl. Phys. A: Mater. Sci. Process.
,
89
(
2
), pp.
475
479
.10.1007/s00339-007-4157-8
26.
Wang
,
M. R.
,
Wang
,
J.
,
Chen
,
W.
, and
Wang
,
L. D.
,
2005
, “
Influence of Li+ Dopants on the Properties of the ZnO Piezoelectric Films
,”
J. Mater. Sci.
,
40
(
19
), pp.
5281
5284
.10.1007/s10853-005-0520-3
27.
Hsu
,
H. L.
,
Yang
,
C. B.
,
Huang
,
C. H.
, and
Hsu
,
C. Y.
,
2013
, “
Electrical and Optical Studies of Ga-Doped ZnO Thin Films
,”
J. Mater. Sci.: Mater. Electron.
,
24
(
1
), pp.
13
19
.10.1007/s10854-012-0735-4
28.
Wang
,
C.
,
Xu
,
D.
,
Xiao
,
X.
,
Zhang
,
Y.
, and
Zhang
,
D.
,
2007
, “
Effects of Oxygen Pressure on the Structure and Photoluminescence of ZnO Thin Films
,”
J. Mater. Sci.
,
42
(
23
), pp.
9795
9800
.10.1007/s10853-007-1992-0
29.
Murali
,
K. V.
,
Ragina
,
A. J.
,
Preetha
,
K. C.
,
Deepa
,
K.
, and
Remadevi
,
T. L.
,
2013
, “
Influence of Ammonia, Lithium Hydroxide, and Hexamine on ZnO Films Synthesized by Successive Ionic Layer Adsorption and Reaction Technique
,”
J. Mater. Sci.
,
48
(
4
), pp.
1852
1861
.10.1007/s10853-012-6982-1
30.
Momeni
,
K.
,
Odegard
,
G. M.
, and
Yassar
,
R. S.
,
2010
, “
Nanocomposite Electrical Generator Based on Piezoelectric Zinc Oxide Nanowires
,”
J. Appl. Phys.
,
108
(
11
), p.
114303
.10.1063/1.3517095
31.
Dong
,
Z.
,
Kennedy
,
S. J.
, and
Wu
,
Y.
,
2011
, “
Electrospinning Materials for Energy-Related Applications and Devices
,”
J. Power Sources
,
196
(
11
), pp.
4886
4904
.10.1016/j.jpowsour.2011.01.090
32.
Reneker
,
D. H.
, and
Yarin
,
A. L.
,
2008
, “
Electrospinning Jets and Polymer Nanofibers
,”
Polymer
,
49
(
10
), pp.
2387
2425
.10.1016/j.polymer.2008.02.002
33.
Teo
,
W. E.
,
Inai
,
R.
, and
Ramakrishna
,
S.
,
2011
, “
Technological Advances in Electrospinning of Nanofibers
,”
Sci. Technol. Adv. Mater.
,
12
(
1
), p.
013002
.10.1088/1468-6996/12/1/013002
34.
Heikkila
,
P.
,
Hirvikorpi
,
T.
,
Hilden
,
H.
,
Sievanen
,
J.
,
Hyvarinen
,
L.
,
Harlin
,
A.
, and
Vaha-Nissi
,
M.
,
2012
, “
High Surface Area Nanostructured Tubes Prepared by Dissolution of ALD-Coated Electrospun Fibers
,”
J. Mater. Sci.
,
47
(
8
), pp.
3607
3612
.10.1007/s10853-011-6207-z
35.
Li
,
C.
,
Lv
,
J.
, and
Liang
,
Z.
,
2012
, “
Effects of Al Doping on the Optical and Electrical Properties of Pre-Synthesized ZnO Powders by Solid State Method
,”
J. Mater. Sci.: Mater. Electron.
,
23
(
9
), pp.
1673
1677
.10.1007/s10854-012-0645-5
36.
Yuan
,
X.
,
Zhang
,
Y.
,
Dong
,
C.
, and
Sheng
,
J.
,
2004
, “
Morphology of Ultrafine Polysulfone Fibers Prepared by Electrospinning
,”
Polym. Int.
,
53
(
11
), pp.
1704
1710
.10.1002/pi.1538
37.
Lee
,
D. Y.
,
Kim
,
B. Y.
,
Lee
,
S. J.
,
Lee
,
M. H.
,
Song
,
Y. S.
, and
Lee
,
J. Y.
,
2006
, “
Titania Nanofibers Prepared by Electrospinning
,”
J. Korean Phys. Soc.
,
48
(
6
), pp.
1686
1690
.
38.
Pham
,
Q. P.
,
Sharma
,
U.
, and
Mikos
,
A. G.
,
2006
, “
Electrospinning of Polymeric Nanofibers for Tissue Engineering Applications: A Review
,”
Tissue Eng.
,
12
(
5
), pp.
1197
1211
.10.1089/ten.2006.12.1197
39.
Ramakrishna
,
S.
,
Fujihara
,
K.
,
Teo
,
W. E.
,
Lim
,
T. C.
, and
Ma
,
Z.
,
2005
,
An Introduction to Electrospinning and Nanofibers
,
World Scientific
,
Singapore
.
40.
Li
,
Z.
, and
Wang
,
C.
,
2013
,
One-Dimensional Nanostructures Electrospinning Technique and Unique Nanofibers
,
Springer
,
New York.
41.
Baek
,
J. H.
,
Park
,
J.
,
Kang
,
J.
,
Kim
,
D.
,
Koh
,
S. W.
, and
Kang
,
Y. C.
,
2012
, “
Fabrication and Thermal Oxidation of ZnO Nanofibers Prepared Via Electrospinning Technique
,”
Bull. Korean Chem.
,
33
(
8
), pp.
2694
2698
.10.5012/bkcs.2012.33.8.2694
42.
Wang
,
D. W.
,
Cao
,
M. S.
,
Yuan
,
J.
,
Zhao
,
Q. L.
,
Li
,
H. B.
,
Lin
,
H. B.
, and
Zhang
,
D. Q.
,
2011
, “
Piezoelectric, Ferroelectric and Mechanical Properties of Lead Zirconate Titanate/Zinc Oxide Nanowhisker Ceramics
,”
J. Mater. Sci.: Mater. Electron.
,
22
(
9
), pp.
1393
1399
.10.1007/s10854-011-0319-8
43.
Salem
,
J. K.
,
Hammad
,
T. M.
, and
Harrison
,
R. R.
,
2012
, “
Synthesis, Structural and Optical Properties of Ni-Doped ZnO Micro-Spheres
,”
J. Mater. Sci.: Mater. Electron.
,
24
(
5
), pp.
1670
1676
.10.1007/s10854-012-0994-0
44.
Rutledge
,
G. C.
,
Li
,
Y.
,
Fridrikh
,
S.
,
Warner
,
S. B.
,
Kalayci
,
V. E.
, and
Patra
,
P.
,
2000
, “
Electrostatic Spinning and Properties of Ultrafine Fibers
,” National Textile Center, Technical Report, No. M98-D01
.
45.
Bahadur
,
H.
,
Samanta
,
S. B.
,
Srivastava
,
A. K.
,
Sood
,
K. N.
,
Kishore
,
R.
,
Sharma
,
R. K.
,
Basu
,
A.
,
Rashmi
,
Kar
,
M.
,
Pal
,
P.
,
Bhatt
,
V.
, and
Chandra
,
S.
,
2006
, “
Nano and Micro Structural Studies of Thin Films of ZnO
,”
J. Mater. Sci.
,
41
(
22
), pp.
7562
7570
.10.1007/s10853-006-0841-x
46.
Loh
,
K. J.
, and
Chang
,
D.
,
2011
, “
Zinc Oxide Nanoparticle-Polymeric Thin Films for Dynamic Strain Sensing
,”
J. Mater. Sci.
,
46
(
1
), pp.
228
237
.10.1007/s10853-010-4940-3
47.
Chang
,
J.
,
Dommer
,
M.
,
Chang
,
C.
, and
Lin
,
L.
,
2012
, “
Piezoelectric Nanofibers for Energy Scavenging Applications
,”
Nano Energy
,
1
(
3
), pp.
356
371
.10.1016/j.nanoen.2012.02.003
48.
Dicken
,
J.
,
Mitcheson
,
P. D.
,
Stoianov
,
I.
, and
Yeatman
,
E. M.
,
2009
, “
Increased Power Output From Piezoelectric Energy Harvesters by Pre-Biasing
,” PowerMEMS 2009, Washington, DC, Dec. 1–4, pp.
75
78
.
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