Open AccessElectrical transport properties of focused ion beam lithography Au contacts on PbTiO3 nanorods
Author(s) -
Jian Wang,
Bin Chen,
Heming Deng,
Xiaojun Zhang,
Xiaoguang Li,
YuanCheng Cao,
Yongming Hu
Publication year - 2019
Publication title -
journal of advanced dielectrics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.38
H-Index - 13
eISSN - 2010-135X
pISSN - 2010-1368
DOI - 10.1142/s2010135x19500280
Subject(s) - nanorod , materials science , tetragonal crystal system , semiconductor , hydrothermal circulation , electrode , lithography , condensed matter physics , phase (matter) , nanotechnology , optoelectronics , physics , quantum mechanics , chemical engineering , engineering
PbTiO 3 nanorods with tetragonal phase were synthesized by hydrothermal method and heat treatment, and temperature-dependent electrical transport properties of individual PbTiO 3 nanorod were investigated. The results show that the conductivities of PbTiO 3 nanorods are gradually enhanced with temperature increasing from 77.4 to 295[Formula: see text]K, and exhibit the typical nonlinear I–V characteristics. The barrier height between Au electrode and nanorod is reduced from 0.137 to 0.088[Formula: see text]eV with increasing bias from 0.2 to 1[Formula: see text]V. The corresponding values of thermal activation energies are 0.172 and 0.06[Formula: see text]eV below the conduction band for 180–295 and 77.4–180[Formula: see text]K, respectively. This semiconductor-like behavior may result from the larger number of surface defects or localized states in the amorphorized PbTiO 3 .