Piezoelectric Potential Distribution in a Bent ZnO Nanorod Cantilever
The piezoelectric potential generated in a bent ZnO nanorod cantilever is analyzed by means of the first piezoelectric effect approximation.The results show that the piezoelectric potential in the nanorod is proportional to lateral force but is independent along the longitudinal direction.And the electric potential in the tensile area and that of compressive area are antisymmetric in cross section of the nanorod,which makes the nanorod become a parallel plated capacitor for piezoelectric nanodevices,such as nanogenerator.The investigation of the carders influence on the piezoelectric potential in a bent ZnO nanorod reveals that the positive piezoelectric potential in stretched side of the bent nanorod is significantly screened by the carriers and the negative potential in compressed side is well preserved when considering a moderate carrier concentration of 1 × 1017cm-3.
ZnO nanorod piezoelectric potential free charge carriers equilibrium potential piezoelectric nanogenerator
Zhengzheng Shao Xueao Zhang Fei Wang Guang Wang Honghui Jia Shengli Chang Hailiang Zhang Liang Fang
Center of Materials Science,College of Science,National University of Defense Technology,Changsha,410073,China
国际会议
大理
英文
23-27
2011-08-18（万方平台首次上网日期，不代表论文的发表时间）