期刊
APPLIED PHYSICS LETTERS
卷 95, 期 2, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3182824
关键词
dielectric polarisation; electrodes; ferroelectric thin films; lanthanum compounds; lead compounds; ohmic contacts; permittivity; photoconductivity; photovoltaic effects
It was discovered that the dielectric constant of the electrodes substantially determines the photovoltaic output in (Pb0.97La0.03)(Zr0.52Ti0.48)O-3 ferroelectric thin films. With the screening charges distributed extensively away from the electrode interfaces, the use of the electrodes with a high dielectric constant gives rise to dramatically enhanced magnitude of photocurrent in photovoltaic thin films, and extremely high photovoltaic efficiency is theoretically predicted to be possible in ferroelectric ultrathin films or nanostructures.
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