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We report a photovoltaic effect in ferroelectric Bi0.9La0.1FeO3 ferroelectric films grown on SrTiO3 substrates with tubular La0.7Sr0.3MnO3 films as buffer layers. The photovoltaic effect can be enhanced by increasing the tubular radius of La0.7Sr0.3MnO3 bottom electrode, the open circuit voltage, short circuit current and power conversion efficiency are 2.05V, 0.31mA/cm2 and 0.82%, respectively. Remarkably,...
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