PVDF based flexible piezoelectric nanogenerators using conjugated polymer:PCBM blend systems
- Authors
- Ko, Eui Jin; Lee, Eui Jin; Choi, Min Hee; Sung, Tae Hyun; Moon, Doo Kyung
- Issue Date
- Jun-2017
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- Conjugated polymer; PCBM; Blend system; PVDF; Piezoelectric nanogenerator
- Citation
- SENSORS AND ACTUATORS A-PHYSICAL, v.259, pp.112 - 120
- Indexed
- SCIE
SCOPUS
- Journal Title
- SENSORS AND ACTUATORS A-PHYSICAL
- Volume
- 259
- Start Page
- 112
- End Page
- 120
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/152230
- DOI
- 10.1016/j.sna.2017.03.013
- ISSN
- 0924-4247
- Abstract
- Piezoelectric energy harvesting technology has received much attention as a powerful source of energy for a self-powered system. In this study, three main conjugated polymers that have delocalized pi-electrons and excellent charge transport properties were studied: poly(3-hexylthiophene) (P1), poly[(4,8-di-(2-ethylhexyloxy)benzo[1,2-b:4,5-b']dithiophene-2,6-diyl)-alt-(5,5'-yl-4,4'-bis(dodecyl)-2,2'-bithiophene)] (P2) and poly[(4,8-di-(2-ethylhexyloxy)benzo[1,2-b:4,5-b']dithiophene-2,6-diyl)-alt-(5,5'-yl-4,4'-bis(2-ethylhexyl)-2,2'-bithiophene)] (P3). Each of three polymers was blended with phenyl-C61-butyric acid methyl ester (PCBM61), and the blend systems were used to make PVDF based piezoelectric nanogenerators (PNG-0-3). Polymers showed bimodal structures that have a majority edge-on orientation, forming a minority face-on orientation. At a 2 Hz frequency and 0.2 mm displacement, the output voltages (peak-to-peak) of PNG-(03) were 35.0 V, 41.2 V, 42.2 V and 43.1 V, respectively, and the output currents (peak-to-peak) were 558.5 nA, 569.5 nA, 572 nA and 589 nA, respectively. The energy conversion efficiencies of PNGs (03) were 6.47%, 11.62%, 13.36%, and 14.33%, respectively; therefore, the efficiency was improved by up to about 2.2 times.
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