Journal
NANO ENERGY
Volume 12, Issue -, Pages 331-338Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nanoen.2015.01.008
Keywords
Nanogenerator; Block copolymer; Nanopattern; Triboetectricity; Contact-electrification
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Funding
- National Research and Development Program - Korea Ministry of Education, Science and Technology (MEST) [2012-0001131]
- Center for Integrated Smart Sensors - Ministry of Education, Science and Technology as part of the Global Frontier Project [CISS-2012M3A6A6054187]
- Institute for Basic Science (IBS)
- [IBS-R004-G1]
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Large-area nanopatterning is introduced on a flexible gold substrate by block copolymer (BCP) lithography. We fabricate ultrahigh power energy harvesting nanogenerators based on contact-electrification principle exploiting the effective contact area enhancement by block copolymer lithography. Owing to the facile and effective surface area enhancement by BCP nanopatterning, significant enhancement of triboelectric charge induction is attained. Output currents from TENG increased at least 16 times after BCP nanopatterning. This nanogenerator can generate remarkably high output voltage and current, which can directly light up 504 serially connected LEDs. The resultant nanogenerator attains the maximum instantaneous current of 1.6 mA and output power of 93.2 W/m(2). Electrical energy generated by single cycle of impact force is 0.54 mJ, and the average electrical energy is 114.89 mW. Those values indicate one of the highest device performance ever reported for the TENGs based on contact-separation mode thus far. (C) 2015 Elsevier Ltd. All rights reserved.
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