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Unidirectional High‐Power Generation via Stress‐Induced Dipole Alignment from ZnSnO 3 Nanocubes/Polymer Hybrid Piezoelectric Nanogenerator
Author(s) -
Lee Keun Young,
Kim Dohwan,
Lee JuHyuck,
Kim Tae Yun,
Gupta Manoj Kumar,
Kim SangWoo
Publication year - 2014
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201301379
Subject(s) - materials science , nanogenerator , piezoelectricity , poling , power density , optoelectronics , voltage , electricity generation , dipole , composite material , power (physics) , ferroelectricity , electrical engineering , dielectric , chemistry , physics , organic chemistry , quantum mechanics , engineering
The extremely stable high‐power generation from hybrid piezoelectric nanogenerator (HP‐NG) based on a composite of single‐crystalline piezoelectric perovskite zinc stannate (ZnSnO 3 ) nanocubes and polydimethylsiloxane without any electrical poling treatment is reported. The HP‐NG generates large power output under only vertical compression, while there is negligible power generation with other configurations of applied strain, such as bending and folding. This unique high unidirectionality of power generation behavior of the HP‐NG provides desirable features for large‐area piezoelectric power generation based on vertical mechanical compression such as moving vehicles, railway transport, and human walking. The HP‐NGs of ZnSnO 3 nanocubes exhibit high mechanical durability, excellent robustness, and high power‐generation performance. A large recordable output voltage of about 20 V and an output current density value of about 1 μA cm −2 are successfully achived, using a single cell of HP‐NG obtained under rolling of a vehicle tire.